Your drawing. Our machines. Verified before shipment.We machine the Extended Collet Series to your exact print. Every unit checked for concentricity and taper angle before it leaves the f
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Your drawing. Our machines. Verified before shipment.We machine the Extended Collet Series to your exact print. Every unit checked for concentricity and taper angle before it leaves the f
We machine the Extended Collet Series to your exact print. Every unit checked for concentricity and taper angle before it leaves the floor. No exceptions.
This is a custom CNC collet chuck, not a stock item. You send the drawing. We make the part.
| Specifications | |
|---|---|
| Parameter | Value |
| Materials | 20CrMnTi, 40Cr, 65Mn, 304/316 stainless steel, brass, aluminum 6061 |
| Hardening | Carburized to HRC 58–62, depth 0.8–1.2 mm |
| Machines | 5-axis CNC lathes, Swiss-type auto lathes, CNC grinding |
| Key process | Precision grinding on taper and bore after heat treatment |
| Tolerance | ±0.005 mm on bore, ±0.01 mm on outer diameter |
| Surface finish | Ra 0.4 µm on gripping surfaces, Ra 0.8 µm elsewhere |
| Concentricity | ≤0.008 mm TIR between bore and taper |
| Batch size | 1 to 10,000 pieces |
| Inspection | 100% dimensional check, CMM report per batch |
| Coating | Optional black oxide, TiN, or hard chrome |
All machining done in-house. No subcontracting. You get one responsible party for quality.
2. Inspection report per batch Every order ships with a dimensional inspection report. We measure bore diameter, taper angle, concentricity, and surface roughness on each part. The report lists actual values, not just pass/fail. Your QC team can verify against our numbers in minutes.
3. One factory for CNC + stamping + spring + heatsink Your collet chuck is not the only part in your assembly. We also run CNC milling, metal stamping, spring coiling, and heatsink fabrication lines. Send us the whole assembly drawing. We quote all parts together, machine them under one roof, and ship them as a set. Fewer vendors, fewer logistics headaches, lower total cost.
In each case, the extended length lets the collet reach deeper into the workpiece or clear a fixture. The trade-off is stiffness. We compensate with hardened steel and precision-ground tapers.
Q: How do you guarantee tolerance and quality? A: We grind the taper and bore after heat treatment, not before. Then we measure every part on a CMM. The inspection report is included in the shipment. If any dimension is out of spec, we replace the part at no cost.
Q: What is your lead time? A: Standard extended collets ship in 10–15 working days after drawing approval. Complex geometries with special coatings take 18–20 days. For urgent orders, we can split the batch and ship the first lot in 5 days.
Q: Do you provide material certificates? A: Yes. Every batch includes a mill certificate for the raw material, heat treatment records, and hardness test results. If you need third-party testing, we arrange it at cost.
Email your drawing to sc@bquq.com Or message us on WhatsApp: +86 13713157787
Precision manufacturing, made in China, with no MOQ and no surprises. Send the file. Get the quote. Start the batch.
Looking for a different part? We also machine Custom CNC Machined Auto Lathe 52 Type Hex Bore Spring Collet 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 |
