OpeningYour drawing defines the part. Our job is to hold that tolerance and prove it before shipment. We machine auto lathe collets and collet chuck components from bar stock, exactly to your print, w
Your drawing defines the part. Our job is to hold that tolerance and prove it before shipment. We machine auto lathe collets and collet chuck components from bar stock, exactly to your print, with a full inspection report attached to every batch.
At a glance: Tolerance ±0.005 mm on critical diameters, lead time 7–12 working days, no MOQ, and 100% dimensional verification before the box leaves Dongguan.
| Parameter | Value |
|---|---|
| Material options | 42CrMo4, 20CrMnTi, 65Mn, 60Si2Mn, SUS303, SUS304, SUS630, brass, aluminum 6061 |
| Raw material form | Precision-ground bar stock (h6/h7 tolerance) |
| Machining process | CNC Swiss-type auto lathe, CNC turning, milling, grinding, wire EDM for slots |
| Key tolerance | ±0.005 mm on bore and taper; ±0.01 mm on slot width and pitch |
| Surface finish | Ra 0.2 µm on sealing/taper faces; Ra 0.8 µm general |
| Hardening | Induction hardening to HRC 50–55, case depth 0.5–0.8 mm (optional) |
| Heat treatment | Carburizing, nitriding, or through-hardening per drawing |
| Batch size | 1 piece to 100,000 pieces, no MOQ |
| Inspection | CMM, optical comparator, hardness tester, surface profilometer |
| Documentation | Material certificate, dimensional report, heat treatment report |
We run the collet bore and taper in the same clamping setup. That eliminates concentricity error. For slotted collets, we use wire EDM after hardening to keep slot edges sharp and burr-free.
1. Batch-traceable quality. Every lot gets a unique job number. Raw material heat number, machine operator, tool offsets, and inspection results are linked to that number. If you need to trace a part back to its steel batch, we can do it in minutes.
2. Inspection report per batch. You do not have to trust us. Each shipment includes a signed inspection sheet with actual measured values—not just a pass/fail stamp. We measure critical dimensions on a CMM and record them. You can audit the report against your own incoming QC.
3. One factory for CNC + stamping + spring + heatsink. Your collet chuck assembly may need a spring, a stamped retainer, or a heat sink for the spindle motor. We make all of them under one roof. Fewer suppliers, shorter lead times, and one responsible party for the whole assembly.
Custom CNC collet chucks and auto lathe collets are not shelf items. They are built for specific machines and specific jobs.
If your part is round, square, or hex and needs to be held firmly while spinning fast, a custom collet from our shop will do it.
Looking for a different part? We also machine Custom CNC Collet Chuck Series 25-52 | Precision Manufacturing Made in China in the same Dongguan factory.
Q: Is there really no MOQ? A: Correct. We machine one prototype or a full production run. The unit price drops with quantity, but we do not force you to buy more than you need. Many buyers start with 5–10 pieces for testing, then scale up.
Q: How do you guarantee ±0.005 mm tolerance? A: We machine the bore and taper in one setup on a temperature-controlled CNC lathe. Then we measure on a CMM with a resolution of 0.0001 mm. If a dimension is out, the part is scrapped—not reworked. You get the report with the shipment.
Q: What is the typical lead time? A: For standard materials like 42CrMo4 or SUS303, 7–10 working days after drawing approval. If heat treatment or grinding is required, add 3–5 days. Rush orders for prototype quantities can be done in 72 hours.
Q: Do you provide material certificates? A: Yes. Every batch comes with a mill test certificate from the steel supplier, plus our own hardness and chemical composition verification if requested. We keep the original documents for 10 years.
Send us your PDF, STEP, or IGES file. We will review the material, tolerance, and quantity, then send you a firm quote within 12 hours. No hidden costs, no vague estimates.
Our precision manufacturing team is ready for your custom CNC collet chuck project. Made in China, but with the documentation and quality control you expect from any top-tier supplier.
Email: sc@bquq.com WhatsApp: +86 13713157787
Send the drawing. Get the quote. We start machining.
| 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 |
