OpeningYour drawing defines the part. We machine it. Every collet chuck we ship is made to your exact print, then verified before it leaves the factory. No surprises.Tolerance: ±0.005 mm on critical d
Your drawing defines the part. We machine it. Every collet chuck we ship is made to your exact print, then verified before it leaves the factory. No surprises.
This is a 25-type collet chuck with a waist slot detail. The waist slot is machined for precise clamping force distribution and chip clearance. We hold the slot width and depth to your spec, not a generic standard.
| Parameter | Value |
|---|---|
| Material options | 20CrMnTi, 40Cr, 65Mn, SUS440C, SUS304, A2 tool steel |
| Hardness (after heat treat) | HRC 52–58 (case hardened) or HRC 40–45 (through hardened) |
| Outer diameter range | 10 mm – 50 mm |
| Waist slot width tolerance | ±0.01 mm |
| Concentricity (OD to bore) | ≤0.005 mm |
| Surface finish | Ra 0.4 µm on bore, Ra 0.8 µm on OD |
| Machines | Citizen L20, Star SR-20, Tsugami B020, CNC Swiss lathes |
| Secondary operations | Wire EDM for slot, internal grinding for bore, lapping |
| Heat treatment | Carburizing, induction hardening, or vacuum hardening in-house |
| Batch size | 1 – 100,000 pcs |
| Inspection | 100% dimensional check on critical features, CMM report per batch |
| Lead time | 10 days for prototypes, 15 days for production runs |
We run 25-type collets on Swiss-type auto lathes. The waist slot is cut after heat treatment to avoid distortion. We grind the bore after slotting to maintain concentricity. This is the sequence that works.
1. Batch-traceable quality. Each batch gets a unique job number. Raw material heat number, machine operator, inspection results – all linked to that number. If you have a problem six months later, we trace it back in minutes. No guesswork.
2. Inspection report per batch. You get a dimensional report with every shipment. Critical features measured on a CMM, recorded, and signed. The report covers slot width, OD, bore, concentricity, and hardness. You do not have to ask for it – it is standard.
3. One factory for CNC + stamping + spring + heatsink. Your collet chuck is not the only part you need. We also run stamping presses, spring coiling machines, and heatsink fabrication lines. You send us a full assembly drawing, we quote the whole thing. One supplier, one invoice, one quality standard. Less coordination on your side.
A 25-type collet chuck with a waist slot is not a generic part. It is used where clamping accuracy and repeatability matter.
The waist slot detail is not decorative. It allows the collet to flex evenly, so clamping force is consistent across the full length of the bore. That means less runout and longer tool life on your machine.
Looking for a different part? We also machine Custom CNC Collet Chuck 46 Type Round Bore Auto Lathe | BQUQ in the same Dongguan factory.
Q: What is your MOQ? A: No MOQ. We make one piece for prototyping or 50,000 for production. The unit price drops with quantity, but the quality standard does not change.
Q: How do you guarantee tolerance and quality? A: We machine to your drawing, not to a catalog standard. After heat treatment, we grind the bore and slot. Every part is checked against your print. A CMM report is included with each batch. If a dimension is out of spec, we do not ship it.
Q: What is your lead time? A: 10 working days for prototypes, 15 working days for production runs. If you need faster, tell us – we can split the batch and ship partial lots.
Q: Do you provide material certificates? A: Yes. We supply mill certificates for raw material with every batch. Hardness test reports and heat treatment records are also available on request.
Email your 2D drawing or 3D model to sc@bquq.com. We reply with a firm quote within 12 hours. Include your target quantity, material, and any special requirements.
For urgent inquiries, WhatsApp us at +86 13713157787.
Precision manufacturing, made in China, with no MOQ and no compromises. Your drawing is the starting point. We handle the rest.
| 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 |
