## Opening
Your drawing defines the part. We machine it exactly to that geometry. Every collet is verified before shipment. No exceptions.This is a 46 type collet with a front view round bore, desig
## Opening Your drawing defines the part. We machine it exactly to that geometry. Every collet is verified before shipment. No exceptions.
This is a 46 type collet with a front view round bore, designed for auto lathe spindles. It grips workpieces with repeatable concentricity. We produce it from your print, with your tolerances, in your material.
We are a precision manufacturing factory in Dongguan, China. Twenty years of CNC machining experience. We have built collets for Swiss-type lathes, multi-spindle autos, and single-spindle turret machines. Send us your drawing. We will quote it straight.
## Specifications All values are typical for a 46 type collet with round bore, front view orientation. Final dimensions follow your drawing.
| Parameter | Value |
|---|---|
| Material options | 42CrMo4, 20CrMnTi, 65Mn, 9SiCr, or customer-specified steel |
| Hardness (finished) | HRC 58–62 for gripping surface, HRC 40–45 for body |
| Bore diameter range | 3 mm to 46 mm, round bore, front view |
| Outer diameter | 46 mm (standard 46 type), or as per drawing |
| Concentricity (bore to OD) | ≤ 0.005 mm TIR |
| Surface roughness (bore) | Ra 0.4 μm or better |
| Surface treatment | Black oxide, zinc plating, or no finish per print |
| Machining process | CNC turning, internal grinding, wire-cut slotting, heat treatment |
| Inspection equipment | CMM, optical comparator, bore gauge, hardness tester |
| Batch size | 1 to 10,000 pieces, no MOQ |
| Lead time | 7 days for sample, 15–25 days for production |
We grind the bore after heat treatment. That gives you the tight tolerance and smooth finish. The slots are wire-cut, not milled, so the edges are clean and the spring action is consistent.
## Three reasons buyers send us their drawings 1. Batch-traceable quality. Every heat lot is tracked. Every collet gets a unique serial number. If you have a problem on line three, we can trace it back to the exact steel batch and the exact operator shift. No guesswork.
2. Inspection report per batch. You get a full dimensional report with each shipment. Bore ID, OD, concentricity, hardness, surface finish — all measured and recorded. We do not ship parts without this report. It saves your incoming QC time.
3. One factory for CNC, stamping, springs, and heat sinks. You send us a collet drawing today. Tomorrow you need a spring retainer or a stamped washer for the same assembly. We make all of them under one roof. You deal with one engineer, one invoice, one quality system. Less coordination, fewer delays.
## Where these parts are used A 46 type collet with a round bore is a workholding component. It is not a finished product. It is the part that holds your workpiece while another machine cuts it.
If your machine uses a 46 type collet, this part fits. If you are not sure, send us your current collet’s drawing or a worn sample. We will confirm compatibility before you order.
## Questions buyers ask before ordering Q: Is there a minimum order quantity? A: No. We make one piece for prototyping or 10,000 pieces for production. The unit price drops with volume, 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. We measure every critical dimension with a CMM and a bore gauge. The inspection report is included with the shipment. If a part is out of spec, we replace it at no cost.
Q: What is the lead time for a custom collet? A: Prototype in 7 days after drawing approval. Production runs in 15–25 days, depending on quantity and heat treatment cycles. We ship by DHL, FedEx, or air freight for urgent orders.
Q: Can you provide material certificates? A: Yes. We provide mill certificates for the steel, heat treatment reports, and hardness test results. All documents are in English and stamped by our QC department.
## Send your drawing We quote firm within 12 hours. No vague estimates. No hidden costs.
Email your drawing to sc@bquq.com or message us on WhatsApp at +86 13713157787. Include your material, tolerance, and quantity. We will reply with a price and a delivery date.
Custom CNC collet chuck, made in China, with precision manufacturing you can verify. Send the drawing. We will make it right.
Looking for a different part? We also machine Custom CNC Collet Chuck 3 Jaw Through Hole Auto Lathe | BQUQ Precision in the same Dongguan factory.
| 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 |
