OpeningYou need a collet chuck that holds tight, repeats true, and fits your auto lathe spindle exactly. We machine it from your drawing, not from a catalog guess. Every bore, every taper, every threa
You need a collet chuck that holds tight, repeats true, and fits your auto lathe spindle exactly. We machine it from your drawing, not from a catalog guess. Every bore, every taper, every thread is cut to your specified geometry. Before shipment, each chuck is checked on a CMM and a test bar runout is recorded. You get the report, not just the part.
| Parameter | Value |
|---|---|
| Material options | 20CrMnTi (carburized), 9Cr18 (stainless), 40CrMo (hardened) |
| Hardness | 58–62 HRC case depth 0.8–1.2 mm (carburized); 45–50 HRC through-hardened |
| Bore type | Square, hex, round, or custom profile per drawing |
| Bore size range | 3 mm to 46 mm (square diagonal up to 46 mm) |
| Taper | 5°, 10°, 15°, or per spindle spec (e.g., 1:10) |
| Runout (TIR) | ≤ 0.005 mm at nose, ≤ 0.01 mm at 50 mm from nose |
| Surface finish | Ra 0.4 µm on bore, Ra 0.8 µm on body |
| Balancing | G2.5 at 6000 RPM (optional) |
| Process | CNC turning, CNC milling, wire EDM for square bore, internal grinding, lapping |
| Inspection | CMM full geometry, test bar runout, hardness tester, magnetic particle check |
| Batch size | 1 to 5000 pcs, no MOQ |
| Lead time | 7 days (soft), 12 days (hardened), 15 days (with balancing) |
We use Swiss-type auto lathes for the body and dedicated internal grinders for the bore. The square bore is cut with wire EDM, not broaching, so corners are sharp and stress-free. Each chuck is serialized. Batch records include heat treat furnace logs and material heat numbers.
1. Batch-traceable quality. Every heat lot is separated. We keep a sample from each batch for 24 months. If you have a failure in the field, we can trace the material, the heat treat cycle, and the operator. That is not common for collet chucks made in China – we do it as standard.
2. Inspection report per batch. You get a dimensional report with actual measured values, not just a pass/fail. Runout, bore size, taper angle, hardness – all printed and signed. For critical orders, we include the CMM scan data file. You can verify without re-measuring everything.
3. One factory for CNC + stamping + springs + heat sinks. Your collet chuck is not an isolated part. If your assembly also needs a spring, a stamped bracket, or a heat sink, we make them under the same roof. One purchase order, one quality system, one shipping date. Fewer suppliers means fewer surprises.
In all these cases, the collet chuck is the last thing between the spindle and the part. If it does not grip true, nothing else matters.
Looking for a different part? We also machine Custom CNC Collet Chuck 40 Type Auto Lathe Parts Made in China in the same Dongguan factory.
Q: What is your MOQ? A: No MOQ. We make one piece for prototypes and thousands for production. The per-piece price drops with quantity, but the quality process is identical.
Q: How do you guarantee tolerance and quality? A: We cut to your drawing, not to a standard. Each chuck is measured on a CMM and a test bar runout is checked. You receive the inspection report with the shipment. If any dimension is out of spec, we replace it at no cost, including freight.
Q: What is your lead time? A: 7 working days for soft steel, 12 for hardened, 15 if you need balancing. For urgent orders, we can expedite to 5 days at a 20% surcharge. We ship via DHL, FedEx, or your forwarder.
Q: Can you provide material certificates? A: Yes. We supply mill certificates for the raw material, heat treat reports with furnace curves, and hardness test results. All documents are in English and stamped by our QC department.
Email your PDF or STEP file to sc@bquq.com. Include the spindle taper, bore size, and any special requirements. We will reply with a firm quote within 12 hours – not a range, a fixed price per piece and a delivery date. For urgent discussions, WhatsApp +86 13713157787.
No MOQ. No minimum order value. Just a custom CNC collet chuck, machined to your drawing, verified before shipment, made in China. Send the drawing today.
| 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 |
