OpeningThis is a CNC machined auto lathe 46 type small bore spring collet, made to your drawing. We do not sell off-the-shelf approximations. We machine the exact bore diameter, taper angle, slot widt
This is a CNC machined auto lathe 46 type small bore spring collet, made to your drawing. We do not sell off-the-shelf approximations. We machine the exact bore diameter, taper angle, slot width, and relief geometry you specify.
Every collet is verified before shipment. We check bore runout, taper contact, and slot symmetry on a CMM. If it does not match your drawing, it does not ship.
This is precision manufacturing for workholding, not a commodity part. Send us your drawing, and we will confirm machinability and price within 12 hours.
| Parameter | Value | Notes |
|---|---|---|
| Type | Auto lathe 46 type | Fits standard 46 series collet chucks |
| Bore diameter | 3–20 mm | As per your drawing |
| Taper angle | 30° or 45° | Standard or custom |
| Slot configuration | 3-slot or 6-slot | Spring collet, full-length slots |
| Material | 65Mn, 60Si2MnA, 9SiCr, 42CrMo | Spring steel or alloy steel |
| Hardness | 42–48 HRC | After oil quenching and tempering |
| Tolerance | ±0.005 mm on bore and taper | Measured at 20 °C |
| Surface finish | Ra 0.4 µm bore, Ra 0.8 µm others | No grinding marks |
| Heat treatment | Through-hardened | Not case-hardened |
| Roundness | ≤0.003 mm | On finished bore |
| Runout (TIR) | ≤0.005 mm | Concentric to taper datum |
| Process | CNC turning, milling, grinding | 5-axis CNC + cylindrical grinding |
| Batch size | 1–5,000 pieces | No MOQ |
| Inspection | 100% dimensional check | CMM + optical comparator |
| Lead time | 7–12 days | Prototype; 15–20 days for large batches |
| Country of origin | Made in China | Dongguan factory, 20 years experience |
We use CNC turning for the outer profile and bore, then CNC milling for the slots. The taper is ground on a cylindrical grinder to hold the ±0.005 mm tolerance. Slot width is held to ±0.02 mm. Spring-back is controlled by heat treatment parameters, not by guesswork.
1. Batch-traceable quality. Every heat lot is tracked. We record material batch number, heat treatment furnace log, and final inspection data for each production run. If you need to trace a part failure, we can tell you exactly when it was hardened and who measured it. This is not typical for Chinese collet suppliers.
2. Inspection report per batch. You get a dimensional report for every batch, not a sample. The report includes bore diameter, taper angle, slot width, hardness, and runout for each piece or per sampling plan (AQL 0.65). We also provide material certificates from the mill.
3. One factory for CNC + stamping + springs + heat sinks. Your collet is not the only part you need. We run CNC machining, metal stamping, spring coiling, and heat sink fabrication under one roof. Send us your full assembly drawing, and we will quote the collet, the return spring, and the mounting bracket together. Fewer suppliers, fewer logistics headaches, one quality standard.
This collet is for automatic lathes and CNC turning centers that use 46-type collet chucks. Typical applications:
The 46-type collet is common in Asian-built automatic lathes. If your machine uses a 46 series chuck, this collet drops in. We also make custom variants with reduced bore depth, special slot patterns, or coated surfaces (TiN or CrN) for abrasive materials.
Looking for a different part? We also machine Custom CNC Auto Lathe 52 Type Round Bore Spring Collet Chuck | BQUQ in the same Dongguan factory.
Q: What is your MOQ? A: No MOQ. We make one prototype for your fit test, then scale up. Tooling cost is amortized into the unit price for the first batch, not charged separately.
Q: How do you guarantee tolerance and quality? A: We machine to your drawing, not to a generic standard. Each collet is measured on a CMM and an optical comparator. Bore runout is held to ≤0.005 mm TIR. We send a full 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: 7–12 days for standard materials like 65Mn or 60Si2MnA. If you need 42CrMo or a special coating, add 3–5 days. For urgent orders, we can expedite to 5 days for a 15% surcharge.
Q: Do you provide material certificates? A: Yes. We provide mill certificates for the raw material, heat treatment reports, and hardness test results. All documents are in English and stamped by our QC department.
Send us your drawing for a firm quote. We reply within 12 hours with price, lead time, and a manufacturability review. If your design has a tight tolerance or an unusual slot pattern, we will tell you upfront what is achievable and what is not.
Email: sc@bquq.com WhatsApp: +86 13713157787
Custom CNC collet chuck, made in China, no MOQ. Your drawing, our machines, verified quality.
| 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 |
