Pabrik Mesin Bubut CNC di Tiongkok: Hal-hal yang Perlu Diperiksa Sebelum Anda Memesan

Panduan Pembelian Mesin Bubut CNC

Produsen mesin bubut CNC asal Tiongkok yang sesungguhnya mengoperasikan lantai perakitan dengan rel pemandu yang telah diperbarui dan menyimpan catatan interferometer laser dalam arsipnya, bukan sekadar kantor perdagangan yang meneruskan permintaan Anda ke tiga bengkel yang tidak terkait. Perbedaan tersebut terlihat dari akurasi geometris, keterlacakan suku cadang, serta kemampuan teknisi servis untuk terbang ke fasilitas Anda dengan kata sandi PLC yang benar dan cadangan parameter.

Apa yang Dibahas di Halaman Ini

Bagian ini membahas secara rinci pemeriksaan-pemeriksaan spesifik yang membedakan produsen mesin dari perantara: verifikasi pasokan dari pabrik pengecoran, perbandingan antara proses perakitan internal dengan perakitan yang disubkontrakkan, dokumentasi uji penerimaan pabrik, struktur pembayaran yang menyesuaikan risiko, serta kemampuan teknik purna jual yang melampaui sekadar pesan suara di WeChat. Setiap poin mencakup hal-hal yang perlu diminta secara tertulis sebelum melepaskan uang muka.

Verifikasi Sumber Pengecoran dan Pembuatan Coran

Mintalah sertifikat kelas pengecoran dan nama pemasok. Produk pengecoran pasir resin HT300 yang telah melalui proses pelepasan tegangan di dalam pabrik harganya sekitar 15–20% lebih mahal daripada bahan mentah HT250 yang diproduksi oleh pihak ketiga, namun tetap stabil selama lebih dari 5.000 jam pemotongan yang terputus-putus. Sebuah perusahaan pembuat yang mengendalikan pengecoran sendiri dapat menunjukkan kepada Anda nomor batch yang tercetak pada cetakan dasar serta laporan metalurgi yang sesuai. Kantor perantara biasanya akan mengelak atau hanya memberikan sertifikat pabrik umum tanpa keterkaitan dengan nomor batch. Mintalah foto-foto coran mentah di halaman pabrik yang dilengkapi cap tanggal; jika tidak ada, hal ini mengindikasikan setidaknya adanya pemesinan kasar yang disubkontrakkan.

Lantai Perakitan dan Kemampuan Pengikisan

Meja mesin bubut CNC presisi memerlukan pengikisan manual atau penggerindaan presisi untuk mencapai kerataan 0,02 mm/m guna pemasangan rel rol linier, atau 0,015 mm/m untuk pola kontak rel kotak. Pabrikan yang terpercaya mempekerjakan pengikis dengan pengalaman minimal 5 tahun dan merawat penggaris lurus standar dengan stiker kalibrasi. Mintalah:

• Catatan uji ball bar dari enam bulan terakhir produksi (akurasi interpolasi melingkar, biasanya 0,015–0,025 mm untuk uji dengan jari-jari 300 mm)
• Laporan interferometer laser untuk akurasi pemosisian (±0,005 mm/300 mm atau lebih baik pada mesin sumbu linier) dan ketepatan pengulangan (±0,003 mm)
• Laporan akurasi geometris sesuai ISO 13041 atau standar nasional yang setara, termasuk deviasi poros di bagian ujung (maksimal 0,005 mm untuk A2-5, 0,008 mm untuk A2-8) dan keselarasan tailstock

Kantor perdagangan tidak dapat memproduksinya karena mereka tidak pernah melihat mesin tersebut sampai tahap pra-pengiriman.

Sistem Pengendalian dan Ketertelusuran Komponen

Kontrol sumber pembangun yang terdokumentasi melalui saluran resmi dengan protokol pencadangan parameter. Verifikasi:

Mintalah nomor seri unit kontrol dan verifikasi dengan kantor regional merek tersebut. Tanyakan nomor model motor servo (seri FANUC αi, Siemens 1FK7) serta tanggal produksi penggeraknya; perbedaan tahun produksi mengindikasikan adanya penggunaan komponen dari unit lain.

Struktur Uji Penerimaan Pabrik

FAT yang sah meliputi:

1. Pengoperasian tanpa beban: 2 jam pada kecepatan spindel maksimum (3.500 rpm untuk A2-5, 2.500 rpm untuk A2-8), dengan pemantauan suhu bantalan
2. Uji pemotongan: Pemesinan putar berkelanjutan pada baja 1045 dengan daya nominal 80%, kehalusan permukaan Ra 1,6 atau lebih baik
3. Verifikasi akurasi: Interferometer laser dan ball bar, bukan sekadar pemeriksaan acak menggunakan indikator dial
4. Dokumentasi: Laporan yang telah ditandatangani, mencantumkan nama pemeriksa, tanggal, dan nomor seri mesin

Pastikan adanya kehadiran melalui video atau saksi pihak ketiga. Ketentuan pembayaran harus mencakup uang muka sebesar 30%, 60% pada saat penandatanganan FAT dengan laporan yang terverifikasi, serta 10% setelah penerimaan pemasangan. Setiap permintaan pembayaran 100% sebelum pengiriman dari kontraktor yang tidak dikenal merupakan tanda bahaya.

Layanan Purna Jual di Bidang Teknik dan Suku Cadang

Produsen yang sesungguhnya menegaskan:

• Pencadangan parameter dan PLC berdasarkan nomor seri, dapat diambil dalam waktu 24 jam
• Persediaan suku cadang selama lebih dari 10 tahun untuk produk cor, 5 tahun untuk elektronik, lengkap dengan daftar referensi silang nomor bagian ke produsen komponen asli (OEM)
• Penempatan insinyur layanan dengan paspor yang sudah dilengkapi visa, bukan disubkontrakkan kepada teknisi perbaikan umum setempat

Tanyakan tiga negara terakhir tempat para insinyur mereka melakukan pemasangan. Verifikasi secara independen jika memungkinkan. Sebuah perusahaan kontraktor dengan riwayat ekspor lebih dari 15 tahun ke Asia Tenggara, Timur Tengah, Afrika, dan Amerika Latin telah berpengalaman menangani konversi tegangan (380 V 50 Hz menjadi 220 V 60 Hz), persyaratan pondasi untuk mesin seberat 4.000–12.000 kg, serta pembongkaran kontainer menggunakan forklift berkapasitas 5 ton atau crane overhead. Mereka akan menentukan kapasitas trafo dalam kVA, gambar pola baut pondasi, dan lokasi titik pengangkatan tanpa diminta. Kantor perwakilan perdagangan biasanya hanya menyediakan manual umum yang disalin dari situs web pesaing.

Jenis dan Konfigurasi Mesin Bubut CNC

Mesin Bubut CNC Tipe Flat Bed

Mesin bubut CNC flat bed tetap menjadi konfigurasi yang paling banyak diekspor oleh produsen Tiongkok karena proses pengecoran dan pemesinan yang sederhana, serta arsitektur terbuka yang cocok untuk benda kerja berdiameter lebar dengan panjang pendek hingga menengah. Pemilik bengkel mesin di Asia Tenggara dan Afrika biasanya membeli mesin kelas ini untuk pekerjaan perbaikan umum, pemotongan poros untuk peralatan pertanian, serta armada pusat pelatihan di mana siswa memerlukan visibilitas yang jelas terhadap interaksi alat potong. Sudut alasnya nol derajat, sehingga penumpukan serpihan di jalur V menjadi masalah nyata pada pekerjaan besi cor; kebanyakan produsen kini memasang konveyor serpihan spiral sebagai fitur standar. Yang tidak dapat dilakukannya adalah mempertahankan stabilitas termal selama pengoperasian berkesinambungan dalam waktu lama pada RPM tinggi—meja datar memiliki luas permukaan yang lebih terbuka dibandingkan meja miring, dan massa sadel menyebabkan distribusi panas yang tidak merata. Mesin dengan jangkauan 660 mm dan jarak antar pusat 3.000 mm akan memiliki berat sekitar 5.500 kg dan menempati ruang lantai seluas 4,8 m × 1,6 m. Pembeli sebaiknya memastikan apakah pabrikan telah melakukan pelepasan tegangan pada coran alas; HT300 tanpa normalisasi akan mengalami pergeseran sebesar 0,05 mm selama satu shift di iklim tropis.

Mesin Bubut CNC dengan Meja Miring

Mesin dengan meja miring mendominasi pesanan dari pemasok otomotif tingkat 2 dan produsen fitting hidraulik yang memproduksi batch sebanyak 500–2.000 buah dengan pergantian pengaturan yang minimal. Sudut meja 30° atau 45° menempatkan operator lebih dekat ke garis tengah spindel dan memungkinkan gravitasi menarik serpihan ke konveyor di bagian belakang. Mesin dengan ayunan 400 mm dan perjalanan sumbu Z 500 mm pada umumnya menggunakan spindel A2-6 berdaya 7,5 kW yang berputar hingga 3.500 rpm, dengan kecepatan perjalanan cepat 24 m/menit pada rel rol linier HIWIN atau PMI. Akurasi pemosisian 0,015 mm dan pengulangan 0,006 mm dapat dicapai jika pembuatnya telah mengikis rasio meja terhadap bantalan dengan benar—mintalah laporan interferometer laser pada sumbu X dan Z, bukan hanya uji kebulatan ball bar. Yang tidak dapat dilakukan oleh kelas mesin ini adalah menahan pemotongan berat yang terputus-putus seperti pada mesin flat bed dengan jalur kotak yang dikeraskan; versi dengan pemandu linier memiliki peredaman yang lebih rendah, dan sadelnya lebih ringkas, sehingga membatasi integrasi penyangga tetap untuk poros yang panjang. Importir di Eropa Timur sering kali menentukan spesifikasi Siemens 828D dengan paket percakapan ShopTurn untuk mengurangi waktu pelatihan operator.

Mesin Bubut CNC Berporos Ganda dan Menara Ganda

Konfigurasi ini membedakan produsen mesin yang sesungguhnya dari kantor perdagangan, karena penyelarasan dua spindel dan dua turret menuntut lantai perakitan yang telah dikikis, perangkat pengukur runout spindel yang dikalibrasi dengan laser, serta protokol siklus termal yang terdokumentasi. Pembeli biasanya adalah produsen suku cadang otomotif atau bengkel besar dengan kontrak pasokan 3–5 tahun yang membutuhkan 20.000+ buah poros transmisi atau hub rem per tahun. Waktu siklus berkurang 40–60% karena bagian dipindahkan dari spindel utama ke sub-spindel untuk operasi bagian belakang tanpa perlu penjepitan ulang. Mesin spindel ganda dengan diameter ayunan 500 mm, dilengkapi dua turret 12 stasiun, dan perkakas aktif (sumbu B pada turret atas) memiliki berat 10.000 kg serta memerlukan pasokan listrik 380 V 50 Hz dengan kapasitas trafo 100 kVA. Waktu tunggu dari pabrikan sebenarnya adalah 90–120 hari; kantor perantara yang menawarkan 45 hari hanyalah meneruskan brosur pihak lain. Hal yang tidak dapat dilakukan secara ekonomis adalah menangani ukuran lot di bawah 200 buah—waktu pergantian untuk dua turret dan dua spindel menghambat utilisasi, dan pengeluaran modal (biasanya 3 kali lipat dari mesin spindel tunggal dengan meja miring) memerlukan tingkat pemanfaatan yang tinggi untuk membenarkan penyusutan.

Mesin Bubut CNC Vertikal

Mesin VTL mengatasi masalah penjepitan yang menjadi kendala pada mesin bubut horizontal: komponen berukuran besar, tipis, dan berbentuk cakram—seperti drum rem atau flensa pompa—akan mengalami distorsi akibat tekanan chuck jika dipasang secara horizontal. Mesin dengan meja berdiameter 1600 mm dan diameter pemesinan maksimum 2500 mm menggunakan spindel berdaya 37 kW melalui bantalan meja hidrostatik, dengan kapasitas beban meja sebesar 8000 kg. Sistem kendalanya menggunakan FANUC atau Siemens dengan PLC khusus untuk interlock pengencangan/pelepasan meja; GSK jarang ditentukan untuk diameter putar di atas 1250 mm karena keterbatasan loop servo pada sumbu rotasi yang berat. Hal yang tidak dapat dilakukan oleh VTL adalah menangani pekerjaan poros secara efisien—batasan ketinggian dan kebutuhan untuk menjangkau diameter yang besar menyebabkan overhang alat menjadi berlebihan untuk bagian yang ramping. Persyaratan pondasi sangat penting: mesin dengan meja berdiameter 2000 mm memerlukan pondasi beton bertulang setebal 800 mm dengan jangkar kimia, dan pembuat mesin harus menyediakan gambar pondasi yang disahkan oleh insinyur struktur mereka, bukan sekadar sketsa umum. Harga CIF untuk kelas ini sangat dipengaruhi oleh biaya pengiriman; mesin seberat 15.000 kg melebihi batas standar kontainer 20 kaki dan mungkin memerlukan pengiriman flat-rack atau breakbulk dari Tianjin atau Shanghai.

Mesin Bubut CNC Tipe Swiss

Mesin tipe Swiss cukup spesifik sehingga hanya tiga atau empat produsen asal Tiongkok yang memiliki pengalaman produksi yang sesungguhnya; sebagian besar “produsen” di bidang ini hanya merakit kit atau mengganti merek. Ciri khasnya adalah headstock geser yang mengarahkan batang logam melalui bushing pemandu, sehingga benda kerja tetap tertopang dalam jarak 2 mm dari area pemotongan setiap saat. Mesin dengan kapasitas batang 20 mm dan 5 sumbu (X, Y, Z, B alat kerja aktif, C spindel) beroperasi pada 10.000–12.000 rpm dengan spindel utama dan sub-spindel 3,7 kW, mencapai akurasi pemosisian 0,005 mm serta hasil akhir permukaan hingga Ra 0,4 µm pada titanium medis dan baja tahan karat 316L. Sistem kontrolnya hampir seluruhnya menggunakan FANUC 0i-TF atau Mitsubishi M80; kompleksitas kinematiknya melampaui kemampuan sebagian besar pengontrol dalam negeri. Yang tidak dapat dilakukan oleh kelas mesin ini adalah mengolah coran, tempaan, atau bahan mentah hasil penggergajian—hanya batang logam, dan sisa panjang (biasanya 150–200 mm per batang) merupakan biaya limbah yang harus diperhitungkan oleh bengkel pemesanan. Pembeli sebaiknya memastikan bahwa produsen telah mengirimkan mesin dengan pengumpan batang (Iemca, LNS, atau Samsys) yang terintegrasi dan telah diuji coba, bukan sekadar “kompatibel dengan.”

Mesin Bubut Tugas Berat untuk Industri Minyak

Mesin bubut CNC jenis ini berada di batas di mana mesin bubut CNC mulai dikategorikan sebagai infrastruktur modal. Diameter lubang spindel merupakan dimensi kritis: 130 mm untuk sambungan pipa, 240 mm untuk selubung sumur minyak, dan 340 mm untuk poros kapal. Mesin dengan ayunan 1000 mm, diameter lubang spindel 240 mm, dan panjang meja 3000 mm memiliki berat 18.000 kg, ditenagai oleh motor utama 45 kW dengan kotak gigi mekanis dua kecepatan (rentang rendah 20–350 rpm untuk pemotongan ulir, rentang tinggi 350–1.200 rpm untuk penyelesaian), serta akurasi posisi hingga 0,020 mm pada rel kotak yang dikeraskan dengan lapisan Turcite-B. Pembelinya adalah perusahaan jasa ladang minyak, galangan kapal, dan perusahaan perbaikan alat berat di Timur Tengah, Rusia, dan Amerika Selatan. Yang tidak dapat dilakukan mesin ini adalah bergerak cepat: kecepatan gerak cepat 6–8 m/menit, penggantian alat dilakukan secara manual atau semi-otomatis, dan kebutuhan ruang lantai (6 m × 2,5 m ditambah jarak bebas chuck) membuatnya tidak cocok untuk bengkel kerja dengan beragam pekerjaan kecil. Ketentuan pembayaran dari produsen yang sesungguhnya biasanya berupa uang muka 30% melalui transfer bank (T/T), 60% pada saat uji penerimaan pabrik (FAT) dengan laporan akurasi geometris yang telah ditandatangani, serta 10% setelah pemasangan dan pelatihan; pemasok mana pun yang menuntut pembayaran di muka sebesar 100% bukanlah produsen.

Spesifikasi dan Cara Membacanya

How to Read Each Line on the Specification Sheet

Working range defines what you can physically fit and machine. Max turning diameter over bed is the largest workpiece the machine can swing without collision. Max turning length is the longest shaft between chuck and tailstock centers. These two numbers determine if your parts fit; a 500 mm diameter machine cannot handle a 600 mm brake drum even once.

Spindle speed and power set your material removal rate and surface finish capability. Higher rpm suits aluminum and small-diameter finishing. Higher torque at lower rpm cuts stainless steel and large castings. The entry-level 5.5 kW/3500 rpm spindle will bog down in heavy interrupted cuts on 4140 steel; the 30 kW/2000 rpm spindle will not.

Spindle nose and chuck size specify tooling interface and gripping force. A2-6 is the standard for mid-range CNC lathes; A2-8 is required for large-diameter work and requires matching chuck adapters. Hydraulic chucks grip harder and more consistently than manual or electric chutes; the specification should state “hydraulic” explicitly.

Lubang poros matters for bar feeding. A 52 mm bore limits you to 2-inch bar stock. A 105 mm bore handles 4-inch bar. If you never run bar work, this number is irrelevant. If you plan unattended production with a bar feeder, it is critical.

Pergerakan cepat is how fast the turret moves between cuts, not how fast it cuts. Entry-level 12 m/min in X means 5 seconds to cross the slide. Mid-range 20 m/min cuts that to 3 seconds. On short-cycle parts, rapid traverse dominates cycle time more than cutting feed rate.

Jenis rel is a fundamental trade-off. Hardened box ways ( scraped cast iron, Turcite-B or Rulon lining) damp vibration and carry heavy interrupted loads. They wear slowly but have higher friction and lower rapid speeds. Linear roller guides (HIWIN, PMI, THK) move faster with lower friction but transmit more vibration and have lower impact resistance. For rough turning forged crankshafts, box ways survive. For finish-turning hydraulic fittings, linear guides win on speed and positioning.

Positioning accuracy and repeatability are different. Positioning accuracy is where the control thinks it is versus where it actually is; repeatability is whether it returns to the same point after a full day of thermal drift and load changes. Repeatability matters more for production consistency. A machine with ±0.010 mm positioning but ±0.003 mm repeatability will make identical parts all day, even if the absolute dimension drifts slightly with temperature.

Turret perkakas station count and change time determine setup flexibility. Four stations means you finish one operation, stop, and re-tool for the next. Twelve stations with servo indexing and Y-axis off-center milling capability lets you complete a part in one chucking. Hydraulic turret clamping holds position under cutting load; electric turrets can slip on heavy cuts.

Sistem kendali is where hidden cost lives. FANUC and Siemens dominate export markets for a reason: spare parts availability, operator familiarity, and resale value. GSK and KND cost 30-40 percent less upfront and perform adequately for 2-axis turning. The risk is local service engineer availability in your market and controller obsolescence in 8-10 years. Syntec and Mitsubishi sit in the middle, stronger in Southeast Asian markets than in Eastern Europe or North America.

Machine weight and floor space indicate casting mass and rigidity. A 2200 kg machine on a 360 mm swing is light; it will move under heavy cuts. A 4500 kg machine on 500 mm swing is proportionally stiffer. The 12000 kg machine on 800 mm swing is necessary for that envelope, not generous. Weight also determines your foundation requirements and crane capacity for installation.

How to Verify a Real Builder from a Trading Office

Own foundry or documented casting source. Ask for the foundry name and location. A builder with in-house casting control will specify HT250 versus HT300 by machine model and explain why. HT250 is standard for entry-level beds; HT300 or Meehanite equivalent is specified for mid-range and above for better damping and less thermal distortion. A trading office will describe “high quality casting” without grade or source. Request a mill certificate for the casting batch.

Assembly floor and hand-scraping records. Real builders maintain scraping teams who fit box ways to the bed by hand, checking contact points with blue dye. Ask for photos of the scraping floor, not just finished machines. The contact pattern should show 8-12 points per 25 mm × 25 mm area on critical surfaces. A trading office has no floor to photograph and will send catalog images instead.

Laser interferometer and ball bar records. These are the objective tests. A laser interferometer (Renishaw XL-80 or equivalent) measures positioning accuracy and repeatability along each axis against ISO 230-2 standards. A ball bar (Renishaw QC20-W) checks circular interpolation and squareness in 15 minutes of rapid testing. Request the actual report for your serial-numbered machine, not a generic template. The report should show test date, technician signature, ambient temperature, and compensation values entered into the control. A builder who cannot produce this tests nothing or tests selectively.

Factory acceptance test (FAT) protocol. A real FAT includes: geometric accuracy (level, straightness, squareness), positioning accuracy with laser, spindle runout at multiple speeds, hydraulic system pressure and flow, and a test cut on a certified test bar. The protocol should specify allowable deviations. Ask to witness the FAT via video link if you cannot travel. A trading office will offer “inspection by third party” as an extra-cost option and has no protocol of their own.

Documented geometric accuracy report. This covers: bed flatness (0.02 mm/m), spindle axis parallelism to Z-axis motion (0.02 mm/300 mm), tailstock sleeve center height alignment, and turret indexing repeatability. These are measured before control compensation is applied. If the builder only offers positioning accuracy after ballscrew compensation, the underlying machine geometry may be poor.

Payment structure as signal. Real builders with production capacity typically structure: 30 percent T/T deposit, 70 percent L/C at sight against shipping documents, or 30/40/30 with the final 30 percent after FAT acceptance. A demand for 100 percent advance payment or payment to a personal account indicates no factory investment and high risk. Escrow through a machinery trading platform is acceptable for first orders under 50000 USD.

After-sales engineering capability. Ask: how many service engineers in your country or region? What is their visa status and typical response time? Do they carry ballscrews, spindle bearings, and encoder cables in stock locally? A builder with real export experience has answered these questions before and has names and numbers. A trading office will promise “24-hour online support” and “local agent arrangement” without specifics.

Trade Terms and Export Practicalities

EXW (Ex Works) means you collect the machine from the factory door. You arrange export packing, inland transport to port, export customs, ocean freight, insurance, and import clearance. Only use EXW if you have a freight forwarder in China and experience with machinery export packing. CNC lathes require steel-frame skids, moisture-barrier wrapping, and shock indicators; factory packing varies enormously.

FOB (Free On Board) is the standard for machinery. The builder delivers to port, loads on vessel, and clears export customs. You pay ocean freight, insurance, and all destination charges. FOB Qingdao or FOB Shanghai are common for Chinese machine tools. Confirm whether FOB includes terminal handling charges; disputes arise when the buyer faces unexpected THCs at departure.

CFR (Biaya dan Angkutan) means the builder pays freight to your port. Risk transfers at departure; you insure the voyage. CFR suits buyers who want price certainty on freight but can arrange their own cargo insurance. For a 4500 kg CNC lathe in a 40-foot container, CFR adds roughly 800-1500 USD to Southeast Asian ports, 2500-4000 USD to Middle Eastern ports, and 4000-7000 USD to East African or South American ports depending on carrier and fuel surcharge.

CIF (Biaya, Asuransi, dan Angkutan) includes builder-arranged voyage insurance. The insurance is typically Institute Cargo Clauses (C), covering total loss but not partial damage from seawater or rough handling. For machinery, arrange ICC (A) all-risks coverage separately if the builder’s CIF insurance is minimal.

L/C (Letter of Credit) versus T/T (Telegraphic Transfer). T/T is faster and cheaper (20-50 USD bank charge) but requires trust. L/C adds 300-800 USD in bank fees and requires strict document compliance; a mismatch between packing list and bill of lading can delay payment and release of goods. For first orders above 30000 USD, many buyers use 30 percent T/T deposit, 70 percent L/C at sight. For repeat orders with established builders, 100 percent T/T against copy of bill of lading is common.

HS code for CNC lathes is typically 8458.11 (horizontal lathes, numerically controlled) or 8458.91 depending on exact configuration and local customs classification. The builder’s commercial invoice and packing list must match the HS code on your import license or registration. Discrepancies cause port delays.

CE marking for European destination requires the builder to hold a technical file, risk assessment, and Declaration of Conformity. The CE mark on the machine nameplate should be traceable to a notified body or self-certified under the Machinery Directive 2006/42/EC. Ask for the DoC document number and date. For non-European markets, CE is irrelevant but may indicate the builder has done systematic safety design; absence of CE on an export machine suggests no third-party review at all.

Packing list and certificate of origin are standard shipping documents. The packing list must itemize: machine net weight, gross weight with packing, dimensions of each package, contents of each crate (machine body, control cabinet, coolant tank, chip conveyor, tooling, manuals). The certificate of origin (Form A or CO per your country’s trade agreement with China) affects import duty rates. Request the builder confirm CO availability before order confirmation; some smaller builders have never issued one.

Voltage and frequency mismatch is a common arrival problem. Chinese machines ship at 380V 50Hz three-phase. If your supply is 220V 60Hz (North America, parts of Philippines, Korea) or 415V 50Hz (India), you need a step-up or step-down transformer and possibly frequency conversion for the control system. FANUC and Siemens controls tolerate 50/60 Hz; spindle motor cooling fans and coolant pumps may not. Specify your actual supply voltage and frequency in the purchase order and require the builder to confirm compatibility or include the transformer. A 15 kVA transformer for an entry-level lathe weighs 80 kg and costs 400-700 USD; a 45 kVA unit for a large machine weighs 250 kg and costs 1500-2500 USD. This is not an afterthought.

Container loading and weight limits. A 20-foot container holds roughly 28000 kg total including cargo; a 40-foot standard holds 26000-28000 kg, and a 40-foot high cube holds similar weight with more volume. A 4500 kg CNC lathe with packing reaches 5500-6000 kg and fits one per 20-foot container, or two per 40-foot if the machines are narrow and the builder designs split skids. A 12000 kg large lathe requires a 40-foot flat rack or open-top container. Confirm the builder has loaded your configuration before; first-time container packing for unusual dimensions risks corner damage and insurance disputes.

Foundation and leveling. Entry-level machines (under 3000 kg) often ship with adjustable leveling pads and require only a flat concrete floor rated 5 ton/m². Mid-range and above need isolated foundations or at least epoxy-grouted anchor bolts and precision leveling to 0.02 mm/m. The builder should supply a foundation drawing with bolt locations, conduit trenches for power and coolant, and recommended concrete thickness. Request this drawing at order stage, not after arrival when production is waiting.

Crane or forklift for unloading. A 2200 kg machine unloads with a 3-ton forklift. A 4500 kg machine needs a 5-ton forklift with extended forks or a 5-ton crane with spreader bar. A 12000 kg machine needs a 16-ton crane minimum, often with dual lifting points. The builder’s packing list states center of gravity location; provide this to your rigging contractor before the truck arrives. Container unloading without proper equipment has caused tipped machines and voided warranties.

Installation and operator training. Distinguish between mechanical installation (leveling, anchoring, utility connection) and control training (programming, tool setting, work offset). A real builder sends one mechanical technician for 3-5 days and offers separate FANUC or Siemens-certified training for operators, either at factory or on-site. Training bundled “free” for 2-3 days is typically only button-pushing familiarization, not CAM post-processor optimization or troubleshooting. Negotiate training scope explicitly: how many operators, what curriculum, what language, written materials provided.

Spare parts and consumables. At minimum, stock: spindle encoder, X and Z axis servo motor or encoder, ballscrew nut assembly, turret proximity switches, hydraulic pump and pressure switch, control battery, and one complete set of way wipers and coolant nozzles. Ask the builder for a recommended spare parts list with part numbers and prices, valid for 10 years. If the builder cannot provide part numbers for their own machine, they are assembling from purchased subassemblies with no parts continuity. For FANUC or Siemens controls, parts availability is global. For GSK or KND, confirm whether the builder holds stock in your region or ships from China with 4-6 week lead times.

Harga Mesin Bubut CNC dan Faktor-Faktor yang Mempengaruhinya

What Actually Makes Up the Machine Price

A CNC lathe invoice from a real builder breaks into roughly these shares of FOB value. The proportions shift with machine class and destination electrical requirements, but the pattern holds across Runlongjia’s export range.

Casting or frame: 12–18 percent. A 500 mm swing flat bed lathe in HT250 resin sand casting runs about 2,800–3,500 kg. Step up to HT300 or Meehanite for a 660 mm machine and the casting share rises to 16–20 percent. The cheapest quotes often use HT200 or poorly seasoned castings that distort within two seasons of workshop temperature cycling. Ask for the foundry name and stress-relief documentation.

Guideways and ball screws: 8–12 percent. Hardened and precision-ground box ways on a 1000 mm bed cost more than linear roller guides but tolerate interrupted cuts better. HIWIN or PMI linear guides on a slant bed machine add 2,000–4,000 USD over unbranded equivalents. C3 grade ball screws from THK or NSK versus C5 from a domestic source: expect 1,500–3,000 USD difference per axis.

Spindle assembly: 10–15 percent. A2-6 or A2-8 spindle cartridge with SKF or FAG bearings, 4000 rpm, 11 kW: roughly 6,000–9,000 USD at factory cost. Built-in motor spindles for higher speeds multiply this. The cheapest alternative is a rebuilt or unbalanced cartridge with angular contact bearings of uncertain preload.

Control system and servo package: 18–28 percent. This is the first of the two dominant line items. FANUC 0i-TF with αi series servos and motors typically adds 14,000–22,000 USD to the machine cost over a domestic GSK or KND package. Siemens 828D with S120 drives sits in the same band. Mitsubishi M800 for heavy-duty applications runs slightly higher. A full GSK 980TDi servo package might add only 4,000–6,000 USD. The performance gap shows in rigid tapping synchronization, servo gain tuning range, and diagnostic depth.

Tool turret: 6–10 percent. A 12-station servo-indexed turret with HYD or Sauter internals runs 4,000–7,000 USD. Hydraulic clamping and disc-type tooling systems for BMT live holders add 50 percent. Entry machines sometimes ship with open VDI turrets or manual quick-change systems to hit a price point.

Assembly labour and scraping: 5–8 percent. Hand scraping of box way contact patterns to 8–12 points per 25 mm × 25 mm takes 40–80 hours on a flat bed lathe. Factories without in-house scraping capability grind to approximate geometry and ship. The difference appears in positioning accuracy maintenance after 5,000 cutting hours.

Electrical panel and ancillaries: 4–6 percent. Schneider or ABB contactors, separate transformer for 220V 60Hz regions, chip conveyor, coolant system.

Export packing and inland freight: 3–5 percent. Vacuum-sealed moisture barrier with VCI film, plywood crate, steel frame. A 660 mm swing lathe in crate runs 4,200–5,500 kg; inland truck to Qingdao or Shanghai port adds 800–1,500 USD depending on distance.

Sea freight, insurance, duty and VAT: Not included in FOB. A 40-foot high-cube container holds one mid-size lathe or two entry machines. Shanghai to Jebel Ali or Santos: 3,500–6,000 USD ocean freight depending on season. Insurance at 110 percent of CIF value: 0.15–0.3 percent. Destination duty varies 0–15 percent; VAT 5–20 percent. Customs clearance and port handling: 800–2,000 USD.

The control system brand and the spindle or laser source brand are normally the two single biggest line items because they are purchased complete from tier-one suppliers at global list prices with limited factory negotiation room. Everything else—casting, sheet metal, assembly labour—scales with local manufacturing economics and offers more flexibility.

Why the Cheapest Quote Costs Less

A 15,000 USD CNC lathe quote against a 28,000 USD competitor for nominally the same specification almost always differs in one or more of these:

• Lighter casting. HT200 instead of HT250, wall thickness reduced 10–15 percent, machine weight 2,100 kg versus 3,200 kg. Chatter on heavy roughing cuts increases; geometric accuracy drifts faster.

• Lower grade ball screws. C7 rolled screws with standard nut preload instead of C5 ground screws. Positioning repeatability degrades from ±0.005 mm to ±0.015 mm within 8,000 hours.

• Unbranded spindle source. No documented bearing preload, no balance grade, no thermal growth test. Bearing replacement at 18 months instead of 5–7 years.

• Missing servo package. Stepper-driven turret or open-loop spindle orientation. Rigid tapping impossible; tool life inconsistent.

• No laser interferometer or ball bar record. The factory has never measured volumetric accuracy or circular interpolation. You receive no geometric report with the machine.

• Trading office markup structure. The seller owns no foundry, no assembly floor, no service engineer. They subcontract to the lowest bidder and disappear after payment.

Perbandingan Biaya Operasional Selama Lima Tahun

Assume a mid-range slant bed CNC lathe running 2,000 hours per year, machining alloy steel and cast iron automotive parts.

The budget machine saves 20,000–35,000 USD upfront. Over five years it typically costs 20,000–30,000 USD more to run. The crossover point depends on your local power rate, labour cost, and whether downtime triggers penalty clauses with your customers.

Lead Time and Factory Verification

Realistic production lead times from a builder with in-house casting and assembly:

• Entry flat bed lathe with GSK control: 35–45 days after deposit
• Mid-range slant bed with Siemens or FANUC: 55–75 days (control system import and spindle build time)
• Heavy-duty or twin-spindle configuration: 90–120 days

Add 7–14 days for factory acceptance test (FAT) including laser interferometer measurement of positioning accuracy and repeatability, and ball bar test for circular interpolation. Request the raw data files, not a summary certificate.

To verify you are dealing with a builder rather than a trading office:

• Ask for foundry name and location; request photos of casting stock with date stamps
• Demand video of the specific assembly bay with your machine serial number visible
• Require laser interferometer report (Renishaw XL-80 or equivalent) showing positioning accuracy to ISO 230-2 and repeatability; ball bar test to ISO 230-4
• Confirm payment structure: 30 percent deposit, 70 percent after FAT and before bill of lading is standard for first orders; demands for 100 percent advance or payment to a personal account are red flags
• Verify after-sales engineering: named service engineer, passport number for visa application to your country, spare parts warehouse location and stock list

A builder who refuses FAT attendance or provides only a template test report without machine-specific serial numbers is signalling limited process control or outsourced assembly.

Aplikasi Industri untuk Mesin Bubut CNC

Suku Cadang Mobil dan Sepeda Motor

Automotive production demands cycle time consistency across 8-hour shifts. A flat bed CNC lathe with A2-8 spindle nose and 11 kW motor at 2500 rpm handles 280 mm brake disc castings with 6 mm depth-of-cut roughing passes. The 3200 kg HT300 casting mass damps vibration that would chatter carbide inserts on lighter machines. FANUC 0i-TF control with rigid tapping cycles produces M14x1.5 wheel stud threads at 1200 rpm without floating tap holders. Shops running camshaft production should verify the supplier’s geometric accuracy report shows ≤0.015 mm total indicator runout on 500 mm test bars; this determines whether finish grinding can be eliminated. Payment structures typically run 30% T/T advance, 70% against bill of lading; lead time from confirmed drawing to FOB Qingdao is 35–45 days for standard models, 55 days for hydraulic chuck and bar feeder integration.

Mesin Pertanian

Tractor axle shafts and gear blanks from cast iron or 45# steel tolerate lower surface finish requirements than automotive work but punish machines with interrupted cuts. A 45-degree slant bed CNC lathe at 2800 kg with linear roller guideways achieves 20 m/min rapid traverse for fast positioning between coarse cuts. The A2-6 nose with 8-inch hydraulic chuck grips 180 mm gear blanks securely; chip gravity discharge prevents the packed-chip failures that stall production in flat-bed designs. GSK 980TDi control keeps per-unit cost down for price-sensitive farm equipment suppliers, though shops requiring ISO program compatibility should specify Siemens 828D at roughly 18% higher controller cost. Foundation requirements are modest: 150 mm reinforced concrete with M16 anchor bolts at 800 mm spacing; machine levelling to 0.02 mm/m using precision levels, not carpenter’s levels.

Sambungan Hidraulik dan Pneumatik

Stainless steel 304 cylinder bodies and chrome-plated piston rods require surface finishes below Ra 1.6 µm to maintain seal integrity. A flat bed CNC lathe with 1000 mm between centers and constant surface speed control (G96) machines 800 mm rods without speed adjustment as diameter reduces. Threading accuracy depends on repeatability; specify ≤0.005 mm repeatability per laser interferometer record, not marketing claims. Syntec 21TA control offers macro programming for variable-pitch threads on hydraulic adjusters at lower cost than FANUC. Transformer requirements matter here: Chinese-built machines ship 380V 50Hz; buyers in 220V 60Hz regions (Philippines, parts of South America) need 15–20 kVA step-up transformers, roughly $800–1200 FOB, adding 3 days to lead time. Ball bar test records should show 0.010 mm circularity on 150 mm radius at 1000 mm/min feed.

Sambungan untuk Industri Minyak dan Gas

API-specified tubing couplings in 4130 or 4140 alloy steel demand torque reserves no light lathe provides. The 800 mm swing, 8500 kg flat bed with 22 kW spindle at 1600 rpm delivers 420 Nm continuous torque for 8 mm roughing depths on 300 mm OD coupling blanks. A2-11 spindle nose accepts 20-inch chucks; verify the supplier’s casting source—HT300 from own foundry or long-term Meehanite supplier, not gray market scrap castings that crack under weld prep loads. Factory acceptance test should include actual cutting: 50 mm diameter test piece, 200 mm length, verifying ≤0.02 mm cylindricity. CE documentation for EU-bound machines must include noise emission test per EN 12418; trading offices often lack this. Crane capacity for unloading: 10-tonne minimum at 6-meter reach; 8500 kg machines do not tolerate forklift tipping.

Pengerjaan Cetakan dan Die

Precision mould components require geometric relationships—concentricity between OD and cross-holes on ejector sleeves—that demand mill-turn capability. A slant bed CNC lathe with C-axis indexing to 0.001° and 3 kW driven tool motor drills 4 mm cross-holes at 90° to axis without transfer to machining center. Sub-spindle configuration with 400 mm between spindles completes 250 mm core pins from bar: turn, drill, cross-mill, part-off, back-face in one cycle. Siemens 828D with ShopTurn conversational interface reduces programming time for die shops without full-time CAM operators; FANUC 0i-TF suits shops with existing ISO program libraries. Driven tool machines add 25–30% to base lathe cost and 15 days lead time for turret integration. Verify ball bar bi-directional circularity at 0.008 mm before acceptance.

Pusat Pelatihan Teknis

Vocational programs in Southeast Asia and Africa need durable machines that survive student errors while matching local industrial control platforms. GSK 980TDi and KND K1000Ti dominate Chinese technical competition environments; graduates transfer directly to job shop floors running identical systems. Specify 5.5 kW spindle at 2500 rpm maximum—sufficient for curriculum exercises without the injury risk of 6000 rpm machines in novice hands. Hardened box ways tolerate crashes better than linear guides; scraping marks on ways should be visible, evidence of hand-finished contact patterns not ground-only production. Transformer to 220V 60Hz is essential for Philippine, Indonesian, and Central American installations; include this in initial quotation, not as after-sale surprise. Training package should include 5-day on-site instruction: 2 days operation, 2 days programming, 1 day maintenance. Spare parts kit—drive belts, proximity switches, fuse sets—should ship in same container, roughly $400–600.

Langkah demi Langkah dalam Memesan dan Mengimpor

The three mistakes that most often leave a delivered CNC lathe idle in a new shop are straightforward to prevent with one-line fixes. Voltage or frequency mismatch: confirm your incoming supply—380V 50Hz three-phase versus 220V 60Hz split-phase—and order the matching transformer with the machine rather than improvising after customs clearance. Working range too small for actual parts: measure your largest existing and planned workpiece including chuck jaw projection and tailstock center extension, then add 20 percent margin to both swing over bed and maximum turning length before selecting a model. No documentation, backup or consumable source: require electrical schematics, parameter backup on USB, and a named local supplier for inserts, coolant and hydraulic oil before final payment release.

Defining Workpiece Envelope And Tolerance

Start with the part, not the brochure. List your maximum diameter, maximum length, and whether you need through-bore capacity for bar work.

Match tolerance requirements to machine class. A positioning accuracy of ±0.005 mm and repeatability of ±0.003 mm demands linear roller guideways (HIWIN or PMI), C3 or C5 grade ballscrews, and thermal compensation in the control—not hardened box ways. Box ways carry heavier interrupted cuts and have better damping but typically achieve ±0.01 mm positioning accuracy at best. If your parts need consistent 0.01 mm total tolerance, specify the tighter machine. If you machine cast iron forgings with heavy roughing passes, the damping of box ways may justify the accuracy trade-off.

Choosing Control System And Service Capability

The control determines who can repair it, how long you wait for parts, and whether your operators already know the menus.

Ask the builder: “Who in my country has serviced your machines with this control in the last 24 months?” A real builder names a technician or distributor. A trading office deflects. For FANUC and Siemens, verify the control is genuine—not a stripped “partner” version with limited PLC access. For GSK or KND, confirm the builder has exported at least 50 units with that control to your region; otherwise you are the test case.

Confirming Electrical Supply And Transformer Requirements

Request the builder’s electrical schematic in your language before deposit. Confirm whether the spindle drive, servo drives, and coolant pump are all rated for your frequency or whether a transformer-isolated supply is planned. A 60Hz motor on 50Hz runs hotter and slower; a 50Hz motor on 60Hz overspeeds and loses torque. The fix is ordering the correct windings or a variable-frequency drive rated for both.

Floor Loading Foundation And Floor Space

A 360 mm swing CNC lathe with 750 mm bed length typically weighs 2,800 kg to 3,500 kg. A 660 mm swing machine with 3,000 mm bed weighs 8,000 kg to 12,000 kg. Check your floor load capacity: standard industrial concrete 150 mm thick with mesh handles 3,500 kg/m². Machines over 6,000 kg need a dedicated foundation pad or thickened slab with rebar.

Floor space must include operator access, chip conveyor extension, and tool cart circulation. Add 1,000 mm minimum to each side of the machine footprint for maintenance access. A typical 500 mm swing × 1,500 mm bed CNC lathe needs 4.5 m × 2.5 m installed footprint, plus 2 m rear clearance for electrical cabinet ventilation.

Specify casting grade: HT250 is standard for beds and saddles on machines under 5,000 kg. HT300 or Meehanite castings are specified for heavy cuts and thermal stability. The builder should state the grade on the quotation; absence suggests HT200 or ungraded recycled material.

Conformity Marking For Customs Clearance

Determine what marking your customs authority requires before the machine ships. CE marking is mandatory for entry into European Union countries, EFTA members, and several Eastern European and Middle Eastern customs unions that reference EU directives. CE requires a technical file, declaration of conformity, and often a third-party assessment for the electrical and machinery safety directives.

For Southeast Asia: Indonesia requires SNI for some electrical components but not the machine itself. Malaysia accepts CE or local DOSH inspection. Thailand has TISI requirements for electrical systems. For Middle East: Saudi Arabia requires SASO conformity for electrical equipment; UAE accepts CE. For Africa: Nigeria SONCAP, Kenya PVOC, and Egypt GOEIC each have specific inspection and documentation rules.

A real builder has shipped to your country before and knows the customs entry requirements. A trading office copies a generic CE certificate from another product. Request the specific directive references (2006/42/EC for machinery, 2014/35/EU for low voltage) and the notified body number if applicable.

Comparing FOB Versus CIF

For CNC lathes, CIF often adds 8-15 percent to the machine price for freight and insurance. FOB gives you control and potential savings if you consolidate shipments. Either way, specify Incoterms 2020 in writing. For machines over 6,000 kg, breakbulk or flat-rack container shipment may be required; standard 20GP or 40HQ containers have payload limits of 21,000 kg and 26,000 kg respectively including packaging.

Container Type And Weight Limits

Confirm the builder provides container loading photos, lashing diagram, and packing list with gross/net weights. For flat-rack shipments, the buyer arranges port crane unloading; verify crane capacity matches machine weight plus packaging.

Deposit And Balance Payment Terms

Standard practice for first-time buyers with Chinese builders: 30 percent deposit against proforma invoice, 70 percent balance against copy of bill of lading (BL) under FOB or CIF terms. For repeat buyers with established relationship, terms may shift to 20/80 or letter of credit at 90 days.

Avoid 100 percent advance payment. A real builder with factory and export track record accepts 30/70. A trading office often demands 50/50 or full payment upfront because they lack credit with their upstream supplier.

Specify payment release tied to documentation: deposit upon signed contract and proforma acceptance; balance upon fax or PDF of BL, packing list, commercial invoice, and certificate of origin. For letter of credit transactions, specify “clean on board” BL and exact document presentation period.

Factory Acceptance Test Before Balance Payment

The FAT is your only chance to verify the machine before it is sealed in a container. Attend in person or appoint a third-party inspector.

Minimum FAT requirements:

1. Geometric accuracy: Laser interferometer or ball bar test for positioning accuracy and repeatability. Request the printed report with environmental conditions (temperature, humidity). Compare to quoted specifications: ±0.005 mm positioning, ±0.003 mm repeatability for linear guide machines.
2. Spindle performance: Run at maximum rated speed (e.g., 4,000 rpm) for 30 minutes. Record bearing temperature rise (typically ≤25°C above ambient). Check vibration velocity per ISO 10816.
3. Cutting test: Machine a test bar in specified material (e.g., 45# steel or ASTM 1045). Measure roundness, cylindricity, and surface finish. Typical results: roundness 0.003 mm, Ra 1.6 μm with carbide insert at standard speeds and feeds.
4. Control functionality: Verify all axes, spindle orientation, tool changer (if equipped), tailstock, and chip conveyor operate per program.
5. Documentation: Electrical schematics in your language, parameter backup on USB, operation manual, maintenance manual, spare parts list with part numbers.

Do not release balance payment until FAT is passed and documented. A builder refusing FAT or offering only a video is not a builder with confidence in their process.

Unloading Equipment At Destination

Verify unloading equipment is booked before vessel arrival. Port storage charges accumulate daily. For container delivery, the builder should mark lifting points and center of gravity on the packaging.

Installation And Operator Training

A real builder sends an engineer or certifies a local partner for installation. Minimum scope:

• Leveling: Precision level 0.02 mm/m on bed ways in longitudinal and transverse directions. Shimming and grouting for machines over 6,000 kg.
• Alignment: Spindle centerline to tailstock centerline within 0.01 mm per 300 mm for machines under 1,000 mm bed; 0.02 mm for longer beds.
• Power-on and parameter load: Verify all parameter backups load correctly. Test emergency stops and door interlocks.
• Training: 3-5 days typical for operators with conventional lathe experience; 7-10 days for new operators. Cover programming (G-code or conversational), tool setup, workpiece zero setting, and daily maintenance.

Training should include your actual parts, not just a demonstration bar. Specify number of trainees, language, and whether interpreter is needed. Chinese-speaking engineer with your English-speaking supervisor is common; confirm this works or request English-speaking engineer (adds cost, often $200-300/day).

Initial Spare Parts And Consumables Package

Order with the machine, not after breakdown. Minimum package:

Request part numbers that cross-reference to standard component brands (NSK bearings, SKF seals, Festo pneumatics). A builder using proprietary part numbers with no cross-reference is hiding something or planning captive aftermarket revenue.

Confirm consumable availability in your country: hydraulic oil ISO VG 46, way oil ISO VG 68, and water-miscible coolant concentrate. If local supply is uncertain, ship a six-month supply with the machine.

Supplier Qualification Checklist

Use this to distinguish a builder from a trading office before placing deposit.

1. Own foundry or verified casting source: Request foundry name and location; HT300 certificate if specified. Trading offices cannot produce this.
2. Assembly floor with scraping records: Ask for photos of guideway scraping with blue-check patterns and contact points per 25 mm × 25 mm (typically 8-12 points for CNC, 6-8 for conventional). Request specific scraping technician names.
3. Laser interferometer and ball bar equipment: Ask for model (Renishaw XL-80, QC20-W) and last calibration certificate. Request sample report from recent machine of your model.
4. Factory acceptance test protocol in writing: FAT document should list test items, acceptance criteria, and instruments used. Vague “we will test” language indicates no formal process.
5. Documented geometric accuracy report: Per ISO 13041 or national equivalent. Report should show actual measured values, not just “pass/fail.”
6. Payment structure: 30/70 standard. Demands for 50/50 or 100 percent advance suggest cash flow problems or trading office structure.
7. After-sales engineering: Name and contact of technician who serviced machines in your country in last 24 months. Not “we have agents”—specific names and recent service dates.
8. Electrical schematic in your language: Available before deposit or only after full payment? Before indicates professional export practice.
9. Control parameter backup on USB: Included with documentation or extra charge? Should be standard.
10. Spare parts local stock or 72-hour delivery commitment: Written confirmation, not verbal assurance.

A builder who answers all ten with specifics within two business days is likely genuine. A trading office will delay, deflect, or provide generic marketing materials.

Pertanyaan yang Sering Diajukan Mengenai Mesin Bubut CNC

Minimum Order And Control System Options

Q: What is your minimum order quantity and which CNC controls do you offer?
MOQ adalah satu unit mesin. Kami menyediakan mesin yang dilengkapi dengan FANUC 0i-TF Plus, Siemens 828D, Mitsubishi M80, GSK 980TDb, KND K2000TFi, atau Syntec 22TA. FANUC dan Siemens memiliki harga yang lebih tinggi sekitar 15-25% dibandingkan dengan GSK atau KND. Semua layar HMI mendukung bahasa Inggris, Spanyol, Rusia, dan Arab; FANUC dan Siemens juga menawarkan bahasa Jerman dan Prancis. Manual parameter dan diagram ladder disertakan dalam pesanan Siemens dan FANUC; sedangkan GSK dan KND hanya menyediakan manual operasi dalam bahasa Inggris.

Q: Can you customize supply voltage and frequency for our local power grid?
Standard build is 380V 50Hz three-phase. We reconfigure spindle motor, coolant pump, and control transformer for 220V 60Hz (common in North America and parts of Southeast Asia) or 415V 50Hz at no extra cost if specified at order. A 380V-to-220V step-down transformer rated at 25-40 kVA runs roughly USD 800-1,200 if your shop needs one later. We label the machine nameplate to match your declared voltage.

Lead Time And Payment Structure

Q: What is typical lead time and what payment terms do you require?
Standard slant bed CNC lathe with A2-6 spindle, 8-inch hydraulic chuck, and GSK control: 25-30 days after deposit. Fanuc or Siemens configurations add 10-15 days for controller import and PLC alignment. Payment is 30% T/T deposit, 70% T/T before shipment against copy of B/L; L/C at sight accepted for orders above USD 50,000 but adds roughly 3% bank charges. No OA terms for first-time buyers.

Factory Verification And Acceptance Testing

Q: How do we verify you are the actual manufacturer, not a trading office?
Our HT250 and HT300 castings come from a partnered foundry 12 km from our assembly plant in Tengzhou, Shandong; we hold the tooling and perform roughing in-house. The scraping floor employs eight technicians hand-scraping box way contact points to 12-16 points per 25×25 mm. We own a Renishaw XL-80 laser interferometer and QC20-W ball bar; geometric accuracy reports and positioning data (typically ±0.005 mm positioning, ±0.003 mm repeatability on 500 mm X-axis travel) are available for review before shipment. We welcome video factory tours or third-party inspection by SGS/BV at buyer cost.

Q: Is factory acceptance test included, and what accuracy documentation do we receive?
Every machine undergoes FAT before crating. We provide a documented geometric accuracy report covering: spindle runout (internal taper test bar, 0.005 mm at 300 mm from spindle nose), X/Z axis positioning and repeatability (laser interferometer, ISO 230-2), and actual cutting test on 45# steel (roundness 0.01 mm, surface roughness Ra 1.6). Ball bar circularity test results (typically 0.015 mm on 150 mm radius at 1000 mm/min) are included for linear guide machines. Reports are in English; third-party notarization available for USD 400.

Shipping Logistics And Installation

Q: What shipping method, container type, and transit time apply?
A CK6140 slant bed lathe (net weight 3,200 kg, floor space 2,800 x 1,650 mm) ships in a 40-foot high-cube container; two units fit if chucks and tailstocks are detached and crated separately. Larger machines (CK6185, 6,500 kg) require flat-rack or open-top container. FOB Qingdao to Jebel Ali: 18-22 days; to Mombasa: 25-30 days; to Santos: 35-40 days; to Hamburg: 28-32 days. CIF quotes include basic marine insurance; crane or forklift with 5-ton capacity minimum required at your dock for unloading.

Q: Do you send engineers for installation and operator training?
One technician travels for 5-7 working days at buyer expense (round-trip airfare, local hotel, USD 120 daily allowance). Scope includes: machine levelling on foundation bolts (epoxy grout recommended for 6,000 kg+ machines), spindle alignment check, hydraulic and pneumatic connection, control parameter verification, and operator training on programming, tool offset, and maintenance. Training covers G-code and conversational cycles for the specific control ordered. Remote diagnosis via TeamViewer or WeChat video is free for the warranty period.

Warranty Spare Parts And Operating Costs

Q: What warranty, spare parts availability, and consumables cost should we budget?
Warranty is 12 months from B/L date on all components except consumables. Critical spares—spindle bearings (NSK or SKF depending on spec), ball screw support bearings, servo motor encoder cables, and hydraulic seals—ship by air within 72 hours of confirmed payment. Annual consumables budget: hydraulic oil (46# anti-wear, 60 liters) at USD 90; chuck grease and way oil at USD 150; coolant concentrate at USD 200 for average usage. We maintain FANUC, Siemens, GSK, and KND servo drive stock in our warehouse; proprietary parts like turret index cams are machined in-house with 10-day turnaround.

Q: Can you supply CE documentation for customs clearance in our country?
CE machinery directive 2006/42/EC compliance documentation—including risk assessment, technical file, EC declaration of conformity, and EN ISO 12100 safety analysis—is prepared and notarized for EU-bound machines. For non-EU destinations requiring CE for import formality (Egypt, Algeria, some Gulf states), we provide the same documentation package. The CE certificate is machine-serial-specific, not a generic factory certificate. Allow 5 working days after FAT completion for documentation finalization; originals travel with the shipping documents.

Pemberitahuan Penting

Pemasokan Mesin Bubut CNC dari RUNNEWTECH

If you are evaluating a China CNC lathe manufacturer for a direct machine purchase, the gap between a trading office and a real builder determines whether your machine arrives with documented accuracy or with excuses. Trading companies quote aggressively because they carry no scraping floor, no foundry relationship, and no engineer to fly out when the turret indexes 0.05 mm off. A qualified builder should show you laser interferometer records for positioning accuracy (typically ±0.005 mm full travel) and ball bar circularity tests, not generic CE stickers.

What RUNNEWTECH Builds and Tests

Runlongjia Machinery, founded in 2010, operates with more than 15 years of manufacturing and export experience. The factory sources castings in HT250 or HT300 grades, stress relieves them, machines beds and heads in-house, and finishes critical surfaces by hand scraping. Every flat bed and slant bed CNC lathe undergoes run-in before packing: spindle at rated rpm for thermal stabilization, turret index repeatability checked, and geometric alignment verified against factory acceptance test criteria. You receive the laser interferometer report and ball bar record with the machine, not on request weeks later.

Specification Flexibility and Export Readiness

RUNNEWTECH machines ship with control systems selected for your market and operator base: FANUC 0i-TF Plus, Siemens 828D, Mitsubishi M80, GSK 980TC3, KND K2000TF, or Syntec 22TA. Spindle configurations include A2-5, A2-6, and A2-8 tapers with 5.5 kW to 15 kW spindle power and speeds to 3500 rpm. Chuck sizes from 160 mm to 315 mm, maximum turning diameters from 360 mm to 800 mm, and turning lengths from 500 mm to 3000 mm cover job shop through production volumes. Rapid traverse reaches 20 m/min to 30 m/min on linear roller guideway models; hardened box way versions trade speed for heavier interrupted cuts.

Voltage adaptation is standard: 380V 50Hz, 220V 60Hz, or step-down transformer supplied where grid conditions differ. Machines pack in plywood cases with VCI rust protection, quoted FOB Qingdao or CIF to your destination port. Container loading respects 20′ FCL and 40′ FCL weight distribution limits; a typical 500 mm swing slant bed lathe with chip conveyor runs 4500 kg net, 5200 kg gross.

After-Sales Engineering Capacity

Installation guidance, operator training material, remote commissioning support, and spare parts stocking distinguish RUNNEWTECH from brokers who disappear post-shipment. The engineering team has handled slant bed lathe commissioning in Southeast Asia, the Middle East, Africa, South America, and Eastern Europe. Spare turret stations, spindle bearings, and control system components ship from factory stock, not third-party dropship.

Send your workpiece material, maximum part diameter and length, required tolerance band, target control system, and destination port to receive a quotation within 24 hours via email or the runnewtech.com contact form.