Your drawing defines the part. We machine it. Every collet is verified before shipment. No guesswork. No tolerance surprises.This is a 50 Type collet for auto lathes,
Your drawing defines the part. We machine it. Every collet is verified before shipment. No guesswork. No tolerance surprises.This is a 50 Type collet for auto lathes, machined from round
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Send us your drawing / quantity / material — reply within 24h.
This is a 50 Type collet for auto lathes, machined from round bar stock. It fits standard 50 Type spindle noses. The bore, thread, and taper are cut to your exact dimensions. We check each one with a coordinate measuring machine (CMM) before it leaves the floor.
| Specifications | |
|---|---|
| Parameter | Value |
| Type | 50 Type auto lathe collet |
| Material | 20CrMnTi, 40Cr, 65Mn, or customer-specified |
| Hardness | HRC 58–62 (case-hardened) |
| Tolerance | ±0.005 mm on bore, taper, and thread |
| Surface finish | Ra 0.4 µm on ground surfaces |
| Machining process | CNC turning, milling, grinding, heat treatment |
| Inspection | 100% CMM check, report per batch |
| Batch size | 1–10,000 pieces |
| Lead time | 7–12 days standard, 3–5 days for prototypes |
| Certification | Material certs, heat treatment report, dimensional report |
We use CNC Swiss-type lathes and cylindrical grinders for the bore and taper. Heat treatment is done in-house in a controlled vacuum furnace. This gives us full control over hardness and distortion.
2. Inspection report per batch. We do not sample. We measure every collet. Bore diameter, taper angle, thread pitch, concentricity — all checked on a CMM. The report is included with your parts. No extra charge. This is standard for us, not a premium service.
3. One factory for CNC, stamping, springs, and heat sinks. You send us one drawing package. We handle the collet, the spring-loaded pusher, the stamped washer, and the heat sink for your spindle motor. One supplier, one quality system, one shipping address. Fewer emails, fewer delays, fewer excuses.
In each case, the collet must grip the bar stock without marring it. The bore tolerance and surface finish determine whether your parts run at 8,000 RPM without vibration. We machine the bore to your exact stock diameter, with a relief for chip clearance.
Q: How do you guarantee tolerance and quality? A: Every collet is measured on a CMM. We send you the dimensional report with the shipment. If any part is out of spec, we replace it at no cost. Our tolerance is ±0.005 mm on critical features, verified per piece.
Q: What is your lead time for a custom design? A: For a standard 50 Type collet with your bore and thread dimensions, lead time is 7 days. For a fully custom design with new drawings, add 3–5 days for tooling and programming. We quote firm lead times with every order.
Q: Do you provide material certificates? A: Yes. Every batch includes a material certificate with heat number, chemical composition, and hardness test results. We also provide heat treatment reports and full dimensional inspection reports. All documents are in English.
Email: sc@bquq.com WhatsApp: +86 13713157787
Precision manufacturing, made in China, with no MOQ. Your custom CNC collet chuck starts with a drawing. Send it.
Looking for a different part? We also machine Custom CNC Collet Chuck Series 25-52 | Precision Manufacturing Made in China 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 |
