OpeningThis is a 46 type auto lathe spring collet with a triangle bore, machined to your exact drawing. We do not stock generic blanks and modify them. We start from raw bar stock and cut every featur
This is a 46 type auto lathe spring collet with a triangle bore, machined to your exact drawing. We do not stock generic blanks and modify them. We start from raw bar stock and cut every feature—bore profile, slot geometry, and back taper—to your print.
Every collet is verified before shipment. We use a CMM and a go/no-go gauge set matched to your workpiece diameter. If the bore does not seat your part within the specified tolerance, it does not ship.
At a glance: Tolerance ±0.005 mm on bore diameter, surface finish Ra 0.4, lead time 7–12 days, no MOQ.
| Parameter | Value |
|---|---|
| Type | 46 type auto lathe spring collet |
| Bore shape | Triangle (3-point contact) |
| Material options | 65Mn spring steel, 60Si2MnA, 9Cr18 stainless, 20CrMnTi case-hardened |
| Hardness | HRC 45–52 (working zone), HRC 38–42 (spring slots) |
| Machining process | CNC turning, CNC milling, wire-cut slotting, heat treatment |
| Bore tolerance | ±0.005 mm (grind after heat treat) |
| Concentricity | ≤0.008 mm TIR to shank |
| Surface finish | Ra 0.4 on bore, Ra 0.8 on OD |
| Slot width | 0.3–1.5 mm, wire-cut, burr-free |
| Back taper | 1°30' standard, custom per drawing |
| Batch size | 1 piece to 10,000 pieces, no MOQ |
| Inspection | 100% dimensional check, CMM report per batch |
| Lead time | 7 days for prototypes, 12 days for production batches |
1. Batch-traceable quality. Every heat lot is assigned a number. We record material cert, heat treatment furnace cycle, and final inspection data against that number. If a collet fails in your machine six months from now, we can trace it back to the exact bar stock and process parameters. You get a full traceability document with each shipment.
2. Inspection report per batch. We do not sample one part and assume the rest are fine. Each collet is checked for bore size, slot width, and hardness. For batches over 100 pieces, we include a variable data report showing the distribution of bore measurements. You know exactly what you are receiving, not what we hope you are receiving.
3. One factory for CNC, stamping, springs, and heat sinks. Your collet is not the only part in your assembly. You likely need a spring, a stamped retainer, or a heat sink for the spindle drive. We make all of them under one roof. That means one purchase order, one quality system, one shipping date. No coordinating three suppliers and hoping their tolerances match.
A 46 type triangle bore collet is a workholding component. It grips round, hex, or triangular stock in automatic lathes and Swiss-type machines.
Typical applications:
The triangle bore design gives three-point contact. That means less deformation on thin-walled parts and better grip on out-of-round stock compared to a round bore.
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: What is your MOQ? A: No MOQ. We make one piece for a prototype and 10,000 pieces for production. The 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 grind the bore after heat treatment, not before. That is the only way to hold ±0.005 mm. Each collet is measured on a CMM, and we send the inspection report with the shipment. If a part is out of spec, we replace it at no cost.
Q: What is your lead time? A: 7 days for a prototype or small batch. 12 days for production quantities. We run three shifts on the CNC line, so we do not quote long lead times to make our schedule look better.
Q: Can you provide material certificates? A: Yes. We supply mill certificates from the steel mill, our own heat treatment report, and a hardness test certificate. All documents are in English and are included with the packing list.
Send us your drawing in PDF, STEP, or IGES format. We will review the bore geometry, slot configuration, and material requirements, then send you a firm quote within 12 hours.
We are a precision manufacturing factory in Dongguan, China, with 20 years of experience in CNC machining, metal stamping, springs, and heat sinks. Your custom CNC collet chuck is made in China, but it is made to your drawing, not to a local standard.
Email: sc@bquq.com WhatsApp: +86 13713157787
No MOQ. No minimum order quantity. Just send the drawing and get a price.
| 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 |
