OpeningYour drawing defines the part. We machine it.This is a custom CNC collet chuck for auto lathe 46 type spindles. Long nose, extended reach, built to your exact geometry. We hold tolerances to 0.
Your drawing defines the part. We machine it.
This is a custom CNC collet chuck for auto lathe 46 type spindles. Long nose, extended reach, built to your exact geometry. We hold tolerances to 0.005 mm on critical diameters. Every unit is verified before shipment. No exceptions.
We are a precision manufacturing factory in Dongguan, China. 20 years of CNC machining, stamping, springs, and heat sinks under one roof. You send the drawing. We send back a part that fits your spindle and holds your workpiece.
| Parameter | Value |
|---|---|
| Material options | 20CrMnTi, 40Cr, 42CrMo, 9SiCr, AISI 4140, AISI 8620 |
| Hardening | Carburized 58–62 HRC, or induction hardened 50–55 HRC |
| Surface finish | Ra 0.4 µm on taper, Ra 0.8 µm on bore |
| Taper accuracy | AT3 or better per ISO 1947 |
| Concentricity | ≤0.005 mm TIR to spindle nose |
| Thread type | Metric, UNF, or custom per drawing |
| Machining process | CNC turning, internal grinding, cylindrical grinding, lapping |
| Inspection | 100% dimensional check, CMM report per batch |
| Batch size | 1–5000 pieces, no setup charge for small lots |
| Lead time | 15 days for prototype, 20 days for production |
| Marking | Laser engraving per your spec (part no., date code, logo) |
We use CNC lathes with live tooling for the blank, then grind the taper and bore on dedicated collet grinders. The long nose section is stress-relieved after roughing to prevent distortion. Final lapping gives the sealing surface a mirror finish.
1. Batch-traceable quality. Every heat of steel has a unique lot number. We record it in your job file. If a part fails in the field, we trace it back to the exact bar stock, machine, and operator. No guesswork.
2. Inspection report per batch. You get a full dimensional report with each shipment. Not a generic certificate – a real table of measured values for every critical feature. Taper angle, concentricity, hardness, surface finish. We sign it. You can audit it.
3. One factory for CNC + stamping + springs + heat sinks. Your collet chuck might need a spring collet insert or a stamped retainer ring. We make those in the same building. One purchase order, one quality system, one shipping date. Less coordination, fewer delays.
Auto lathe 46 type collets are workholding components. They grip bar stock or pre-machined blanks during turning, drilling, and threading. The long nose extension reaches into deep bores or past fixed guides.
The 46 type refers to the spindle nose taper and thread size. It fits common Japanese and Korean auto lathes (Citizen, Star, Tsugami, Hanwha). If your spindle is different, we make that too. Just send the drawing.
Looking for a different part? We also machine Custom CNC Machined Auto Lathe Collet With Guide Bushing Set | BQUQ in the same Dongguan factory.
Q: What is your MOQ? A: No MOQ. We machine one prototype for your fit test, then scale up. Tooling cost is amortized into the unit price for production runs.
Q: How do you guarantee tolerance and quality? A: We grind the taper and bore on dedicated machines. Each part is measured on a CMM and a taper gauge. The inspection report is included. If a part is out of spec, we replace it at no cost.
Q: What is your lead time for a custom collet chuck? A: 15 working days for a prototype after drawing approval. Production runs of 100+ pieces take 20 working days. Rush orders are possible for an extra fee – we have a dedicated quick-turn cell.
Q: Do you provide material certificates? A: Yes. Every batch includes a mill certificate for the raw material and a hardness test report. If you need third-party testing (SGS, BV), we arrange it at cost.
We quote firm within 12 hours. No vague estimates. You get a price, a lead time, and a technical review of your drawing – including any red flags we see in the design.
Email your PDF or STEP file to sc@bquq.com Or message us on WhatsApp: +86 13713157787
We are a precision manufacturing partner in Dongguan, China. Custom CNC collet chuck, made in China, with no MOQ and full traceability. Send the drawing. We will make it right.
| 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 |
