OpeningYour drawing defines the part. We machine it, verify it, and ship it. That is the entire process. No guesswork, no substitutions.We build custom CNC collet chucks and DIN6388 collet nuts to you
Your drawing defines the part. We machine it, verify it, and ship it. That is the entire process. No guesswork, no substitutions.
We build custom CNC collet chucks and DIN6388 collet nuts to your exact geometry. Every part is checked against your file before it leaves our floor in Dongguan. If it does not match, it does not ship.
At a glance: ±0.005 mm machining tolerance, 15-day standard lead time, no MOQ, full material traceability.
We run a dedicated CNC turning and milling cell for collet chuck bodies and nuts. The table below shows what you can expect when you send us your drawing.
| Parameter | Value |
|---|---|
| Material | 20CrMnTi, 40Cr, 12L14, 303/304/316 stainless, A2/A3 tool steel |
| Hardening | Carburized to HRC 58–62, core hardness HRC 30–40 |
| Machining tolerance | ±0.005 mm on bore and taper, ±0.01 mm on thread pitch |
| Surface finish | Ra 0.4 µm on taper, Ra 0.8 µm on OD |
| Thread standard | DIN 6388, DIN 6499, ER collet thread forms |
| Key machines | 5-axis CNC lathe, cylindrical grinder, thread grinder |
| Inspection | CMM full geometry report, thread plug gauge, taper gauge |
| Batch size | 1 piece to 10,000 pieces |
| Lead time | 15 days for prototypes, 25 days for production runs |
| Surface treatment | Black oxide, electroless nickel, hard chrome, or as drawn |
We do not outsource any critical step. Turning, grinding, heat treatment, and inspection stay in our factory. That gives us control over every micron.
1. Batch-traceable quality. Each heat of material gets a unique lot number. That number follows the part through hardening, grinding, and final inspection. If you need to trace a part back to its raw bar stock, we can do it in minutes. We keep records for 10 years.
2. Inspection report per batch. You get a dimensional report with every shipment. It lists bore diameter, taper angle, thread pitch, and runout. We also include hardness test results. No extra charge, no request needed. The report is signed by our QC lead.
3. One factory for CNC + stamping + springs + heatsinks. Your collet chuck is rarely the only part in your assembly. You might need a spring for the collet, a stamped retainer plate, or a heatsink for the spindle motor. We make all of them under one roof. That means one purchase order, one shipping date, and one quality standard. You save freight and you save coordination time.
A CNC collet chuck is not a decorative part. It holds the tool or workpiece, and any runout shows up directly in your finished part. Our customers use these chucks in:
In every case, the buyer is an engineer who knows that a cheap collet nut costs them scrap parts. They send us the drawing because they want the tolerance held, not approximated.
Looking for a different part? We also machine Custom CNC Machined 2J Collet Chuck | Precision Manufacturing Made in China in the same Dongguan factory.
Q: What is your MOQ? A: No MOQ. We machine one piece for prototype validation or 10,000 pieces for production. The per-unit price drops with quantity, but we do not force you to buy more than you need.
Q: How do you guarantee tolerance and quality? A: We use a CMM for full geometry verification on every batch. For critical tapers, we use an air gauge with 0.0005 mm resolution. The inspection report is included with your shipment. If a part is out of spec, we replace it at our cost.
Q: What is your lead time for custom CNC collet chucks? A: Standard lead time is 15 days for prototypes and 25 days for production. If you need a sample for fit testing, we can rush a single piece in 7 days. We will confirm the exact date when we quote your drawing.
Q: Can you provide material certificates? A: Yes. We supply mill test certificates for the raw material with every batch. For aerospace or medical applications, we can also provide heat treatment certificates and full chemical analysis.
Stop comparing catalogs. Send us your file and get a firm quote in 12 hours.
We price from your drawing, not from a standard part list. You get a clear quote with material cost, machining cost, surface treatment, and lead time. No hidden fees.
Email your drawing to sc@bquq.com or message us on WhatsApp at +86 13713157787.
Precision manufacturing, made in China, with no MOQ and full traceability. Your drawing is the only thing we need to start.
| 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 |
