Your drawing defines the part. We machine it. Every custom CNC collet chuck is made to your exact dimensions, verified on our CMM before shipment. No guesswork. No tol
Your drawing defines the part. We machine it. Every custom CNC collet chuck is made to your exact dimensions, verified on our CMM before shipment. No guesswork. No tolerance drift.Toleran
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We are a precision manufacturing factory in Dongguan, China, with 20 years on CNC lines. Auto lathe collet chucks are our daily work. Send a drawing. Get a part that fits your spindle the first time.
| Specifications | |
|---|---|
| Parameter | Value |
| Part type | CNC collet chuck, 36 type auto lathe, hex bore |
| Materials | 20CrMnTi, 40Cr, 65Mn, SUS420, SUS440C |
| Hardness | 58–62 HRC (case-hardened), 45–52 HRC (through-hardened) |
| Bore shape | Hexagon, square, round, custom profiles |
| Bore size range | 2.0 mm – 36.0 mm |
| Outer diameter | 36 mm (standard 36 type), custom OD available |
| Length | 40 mm – 120 mm, per drawing |
| Tolerance | ±0.005 mm on bore, ±0.01 mm on OD and length |
| Surface finish | Ra 0.4 µm on bore, Ra 0.8 µm on outer surfaces |
| Machining process | CNC turning, CNC milling, wire EDM, internal grinding |
| Heat treatment | Carburizing, quenching, tempering, cryogenic treatment |
| Inspection | 100% dimensional check, CMM report per batch |
| Batch size | 1 piece to 50,000 pieces, no MOQ |
| Lead time | 15 days for prototypes, 20 days for production runs |
| Country of origin | Made in China, Dongguan factory |
Every collet chuck is machined from solid bar stock. We do not use castings or blanks. This gives you consistent grain structure and predictable hardness. The hex bore is cut with wire EDM after heat treatment, so the profile stays sharp and the tolerance holds under repeated clamping.
2. Inspection report per batch. You get a full dimensional report with every shipment. CMM data, hardness readings, surface roughness values. No sampling. We measure 100% of critical dimensions on every piece.
3. One factory for CNC + stamping + springs + heat sinks. Your collet chuck is not the only part you buy. We also run metal stamping, spring winding, and heat sink lines. Combine your orders in one shipment. One supplier, one invoice, one quality standard. This cuts your logistics cost and your vendor management time.
The 36 type chuck fits standard auto lathe spindles (e.g., Citizen, Star, Tsugami, and domestic Chinese machines). If your spindle is non-standard, we adjust the OD and taper to match. You send the drawing. We make it fit.
Q: How do you guarantee tolerance and quality? A: We machine to ±0.005 mm on the bore. After heat treatment, we grind the bore and OD. Every part is checked on a CMM. The inspection report is included with your shipment. If any part is out of spec, we replace it at no cost.
Q: What is your lead time? A: Prototypes ship in 15 days. Production orders ship in 20 days, depending on quantity and material availability. For urgent orders, we can split the batch and ship the first pieces in 7 days.
Q: Can you provide material certificates? A: Yes. Every batch comes with EN 10204 3.1 material certs, heat treatment reports, and hardness test data. We can also provide third-party inspection (SGS, TUV) at your request.
Email: sc@bquq.com WhatsApp: +86 13713157787
Precision manufacturing, made in China, no MOQ. Your custom CNC collet chuck, verified before shipment.
Looking for a different part? We also machine Custom CNC Collet Chuck Auto Lathe 40 Type Round Bore | BQUQ in the same Dongguan factory.
| Parameter | Capability |
|---|---|
| Materials | AL6061/7075, SUS303/304/316, 45# steel, T2 copper, H59 brass, POM, PEEK, nylon |
| Tolerance | ±0.005mm standard, ±0.003mm on request |
| Machines | 3/4/5-axis CNC, turn-mill, Swiss lathe |
| Surface | Anodizing, nickel, zinc, passivation, sandblast, polish |
| Size Range | Max 400 x 300 x 200 mm |
| Prototype | 72 hours, no MOQ on samples |
| Inspection | Full report per batch, CMM data on request |
