OpeningYour drawing becomes a finished collet chuck, not a compromise. We machine it from raw stock to your exact hex bore dimensions, then verify the bore and taper before shipment. No guesswork, no
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- sc@bquq.com
OpeningYour drawing becomes a finished collet chuck, not a compromise. We machine it from raw stock to your exact hex bore dimensions, then verify the bore and taper before shipment. No guesswork, no
Your drawing becomes a finished collet chuck, not a compromise. We machine it from raw stock to your exact hex bore dimensions, then verify the bore and taper before shipment. No guesswork, no “close enough.”
We are a precision manufacturing factory in Dongguan, China, with 20 years of CNC machining experience. This collet chuck is made for auto lathes, CNC lathes, and Swiss-type machines where a standard round bore fails. If the hex size, taper angle, or slot geometry is non-standard, we make it exactly.
| Parameter | Value | Notes |
|---|---|---|
| Material | 20CrMnTi, 65Mn, 9CrSi, or customer-specified | Case-hardened or through-hardened |
| Hardness | HRC 58–62 | After heat treatment |
| Bore tolerance | ±0.005 mm | Hex across-flats dimension |
| Taper angle | ±0.01° | Matches spindle or collet chuck seat |
| Surface roughness | Ra 0.4 µm on bore, Ra 0.8 µm on body | Ground after hardening |
| Slot width | ±0.02 mm | For spring action, cut by wire EDM |
| Roundness | ≤0.003 mm | On bore and outer diameter |
| Concentricity | ≤0.005 mm TIR | Bore to taper, verified on CMM |
| Process | CNC turning, internal grinding, wire EDM, heat treatment | All in-house |
| Batch size | 1 to 10,000 pieces | No MOQ for prototypes |
| Lead time | 7–12 days for prototypes, 15–20 days for production | Based on complexity |
Every collet is individually serial-numbered. The inspection report lists bore size, taper angle, hardness, and surface finish. We keep a sample from each batch for 12 months.
1. Batch-traceable quality. Each heat treatment batch is logged with furnace number and time. Each machining batch has its own inspection record. If a problem shows up on your line, we can trace it to the exact operation and operator. You get a PDF report with actual measured values, not just a pass/fail sticker.
2. Inspection report per batch. We use a CMM (coordinate measuring machine) for taper and bore geometry, a Rockwell hardness tester for HRC, and a profilometer for surface roughness. The report is sent with the shipment. You do not need to re-inspect every piece—spot-check and trust the numbers.
3. One factory for CNC + stamping + springs + heat sinks. Your collet chuck might need a spring retainer, a stamped washer, or a heat sink for the spindle motor. We make all of those in the same building. You send one drawing package, we coordinate the processes, and you receive one shipment with one invoice. Fewer suppliers, fewer delays, fewer arguments.
Custom CNC collet chucks with hex bores are not shelf items. They show up in specific, high-volume production lines:
If your part has a hex cross-section and you are using a round collet with a shim, that is wasted time and scrap. A custom hex bore collet eliminates both.
Looking for a different part? We also machine Custom CNC Collet Chuck 25 Type Multi Slot Round Bore | BQUQ in the same Dongguan factory.
Q: What is your minimum order quantity? A: No MOQ. We make one prototype for testing, then you scale up. Prototype pricing is slightly higher per piece, but production pricing drops at 100, 500, and 1,000 pieces. We send a tiered quote with your drawing.
Q: How do you guarantee tolerance and quality? A: We machine to ±0.005 mm on the bore and taper, then grind after hardening. Every piece is measured on a CMM, and the report is included. If a piece is out of spec, we replace it at no cost, including freight.
Q: What is your typical lead time? A: Prototypes in 7–12 working days after drawing approval. Production runs of 500+ pieces in 15–20 working days. Heat treatment adds 2–3 days. We confirm the exact date in the quotation.
Q: Can you provide material certificates and heat treatment reports? A: Yes. We supply mill certificates for raw material (chemical composition) and heat treatment reports (hardness, case depth, furnace log). All documents are in English and shipped with the goods.
Send us your PDF or STEP file. We will check the hex size, taper angle, and slot geometry, then send a firm quote within 12 hours. Include your material preference and annual quantity—we will suggest the most cost-effective option.
Email: sc@bquq.com WhatsApp: +86 13713157787
We are a precision manufacturing factory in Dongguan, China. Your custom CNC collet chuck is made in China, but it is measured, verified, and documented to your exact spec. No MOQ, no surprises. Send the drawing.
| 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 |
