OpeningWe machine this round bore collet set to your exact drawing. Every part is verified before shipment. No exceptions.This set covers bore sizes from 15 mm to 52 mm. It is built for auto lathes an
We machine this round bore collet set to your exact drawing. Every part is verified before shipment. No exceptions.
This set covers bore sizes from 15 mm to 52 mm. It is built for auto lathes and CNC turning centers that demand repeatable gripping force and concentricity.
At a glance: Tolerance ±0.005 mm on bore ID. Surface finish Ra 0.4. Lead time 10-15 working days. No MOQ. One piece or one thousand, same process.
You send the drawing. We handle the rest.
| Parameter | Value |
|---|---|
| Material options | AISI 4140, 8620, or 65Mn spring steel (per your spec) |
| Hardness | 40-45 HRC (core), 58-62 HRC (gripping surface, localized) |
| Bore size range | 15 mm to 52 mm (increments per your drawing) |
| Tolerance | ±0.005 mm on bore ID, ±0.01 mm on OD and length |
| Concentricity | ≤0.008 mm TIR between bore and taper |
| Surface finish | Ra 0.4 on bore, Ra 0.8 on external taper |
| Machining process | CNC turning, internal grinding, wire-cut slotting |
| Heat treatment | Carburizing or induction hardening, then tempering |
| Inspection | 100% dimensional check, CMM report per batch |
| Batch size | 1 to 5,000 pieces accepted |
| Lead time | 10-15 working days for standard alloys |
| Country of origin | Made in China, Dongguan factory |
All collets are machined from solid bar stock. We do not use castings or blanks. This gives you consistent grain structure and predictable wear life.
1. Batch-traceable quality Every heat number is recorded. Every batch gets a unique job number. If you need to trace material back to the mill, we provide the certificate. This matters for aerospace, medical, and automotive lines where audits are routine.
2. Inspection report per batch You get a dimensional report with every shipment. It lists bore ID, OD, taper angle, concentricity, and surface finish. We measure with CMM and bore gauges calibrated to ISO standards. No guesswork. No "trust us" — you see the numbers.
3. One factory for CNC, stamping, springs, and heat sinks Your collet chuck set is not the only part you buy. We also run CNC machining, metal stamping, spring winding, and heat sink fabrication lines under one roof. That means you can consolidate vendors. One purchase order, one quality system, one shipping point. Fewer headaches, lower logistics cost.
This custom CNC collet chuck set is not a shelf item. It is made for specific machines and jobs.
If you run any of these machines, you know that a poor collet ruins your tolerances. Our set is ground after heat treatment, not just turned. That is the difference between a collet that works for a week and one that works for a year.
Looking for a different part? We also machine Custom CNC Machined Auto Lathe 52 Type Hex Bore Spring Collet in the same Dongguan factory.
Q: Is there a minimum order quantity? A: No. We accept one piece for prototyping or a full set for production. The price per piece drops with quantity, but the process is identical. No MOQ, no setup fee for standard alloys.
Q: How do you guarantee tolerance and concentricity? A: We grind the bore and taper after heat treatment. Then we measure every collet on a CMM. The inspection report shows actual values, not nominal ones. If a collet is out of spec, it does not ship.
Q: What is the lead time for a custom set? A: Standard alloys like 4140 or 8620 take 10-15 working days. If you need expedited service, we can quote 5-7 days for an additional charge. We do not quote lead times we cannot meet.
Q: Can you provide material certificates and heat treatment reports? A: Yes. Every batch comes with a mill certificate for raw material and a heat treatment report showing hardness values. Third-party inspection is available on request.
Stop guessing whether a stock collet will fit your machine. Send us your drawing and we will quote a custom CNC collet chuck set that matches your spindle, your bar stock, and your tolerance requirements.
We reply with a firm quote within 12 hours. No hidden costs, no vague promises.
Email your PDF or STEP file to sc@bquq.com WhatsApp: +86 13713157787
Precision manufacturing, made in China, with no MOQ. Your drawing. Our machines. Verified results.
| 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 |
