OpeningYour drawing defines the part. We machine it.Every custom CNC collet chuck we ship is made to your exact drawing, verified with a full inspection report before it leaves our floor. No surprises
Your drawing defines the part. We machine it.
Every custom CNC collet chuck we ship is made to your exact drawing, verified with a full inspection report before it leaves our floor. No surprises. No “close enough.”
We are a precision manufacturing factory in Dongguan, China, with 20 years of CNC machining experience. We make collets for auto lathes, Swiss-type machines, and CNC turning centers. Send us your print. We will quote it in 12 hours.
| Parameter | Value |
|---|---|
| Product type | CNC collet chuck, Type 15 (auto lathe series) |
| Bar diameter range | 1.0 mm – 15.0 mm (round bar) |
| Material options | 20CrMnTi, 40Cr, 65Mn, 9SiCr |
| Hardness | 58–62 HRC (case-hardened) |
| Tolerance | Bore: ±0.005 mm; Taper: ±0.005 mm; Concentricity: ≤0.008 mm |
| Surface finish | Ra 0.4 µm on bore, Ra 0.8 µm on taper |
| Machining process | CNC turning, internal grinding, wire-cut slotting |
| Heat treatment | Carburizing or induction hardening, then tempering |
| Inspection | 100% dimensional check, 100% concentricity test |
| Batch size | 1 to 10,000 pieces |
| Lead time | 7 days (prototype), 12 days (production batch) |
| Certification | Material certificate, heat treatment report, inspection report |
We do not use substandard blanks. Each collet starts from a certified bar, machined on our own CNC lathes and ground on internal grinders. Slotting is done with wire EDM for clean, burr-free edges.
1. Batch-traceable quality. Every batch gets a unique lot number. We record material heat number, machine operator, and inspection results. If you have a problem on your line, we can trace it back to the exact day and shift. That is not common for collet suppliers.
2. Inspection report per batch. You do not have to trust us. We send you a PDF with actual measured values: bore diameter, taper angle, concentricity, hardness. You can verify every number with your own gauge. If something is out, we replace it at no cost.
3. One factory for CNC + stamping + springs + heat sinks. We are not a trading company. Under one roof, we run CNC machining, metal stamping, spring coiling, and heat sink fabrication. If your collet is part of a larger assembly—say, a spring-loaded chuck or a stamped housing—we make all of it. Fewer vendors, faster lead times, one responsible party.
A Type 15 collet with a small round bar bore is a workhorse in high-volume turning. Typical applications:
Buyers in automotive, medical device, and electronics assembly use these collets because they hold round bar with zero marring and less than 0.01 mm runout. That means longer tool life and fewer rejected parts downstream.
Looking for a different part? We also machine Custom CNC Collet Chuck 630 Type Auto Lathe Round Bore | BQUQ in the same Dongguan factory.
Q: Is there a minimum order quantity? A: No. We make one piece for prototypes and full batches for production. Same tolerance, same inspection. No MOQ is our standard policy for custom CNC collet chucks.
Q: What tolerance can you hold on the bore and taper? A: ±0.005 mm on both. Concentricity between bore and taper is ≤0.008 mm. We verify every piece with an air gauge and a taper tester, not just a sample.
Q: What is your lead time for a custom collet? A: 7 days for prototypes after drawing approval. Production batches of 100–1,000 pieces ship in 10–12 days. If you need faster, we can split the batch and ship partial quantities.
Q: Do you provide material certificates and heat treatment reports? A: Yes. Every batch includes a material certificate (with heat number) and a heat treatment report showing hardness and case depth. These are included free of charge.
We are a precision manufacturing factory made in China, and we have been doing this since 2005. No MOQ, no minimum order value. You send the drawing; we send a firm quote in 12 hours.
Email: sc@bquq.com WhatsApp: +86 13713157787
Attach your PDF or STEP file. Include your target quantity and required material. We will reply with price, lead time, and our inspection plan. If your drawing is incomplete, we will tell you exactly what is missing. No guesswork.
| 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 |
