OpeningYou need a collet chuck that holds tight, runs true, and fits your auto lathe spindle without rework. We make it to your drawing. Every unit is verified before shipment. No guesswork.Tolerance:
You need a collet chuck that holds tight, runs true, and fits your auto lathe spindle without rework. We make it to your drawing. Every unit is verified before shipment. No guesswork.
This is a 15-type round bore spring collet chuck for auto lathes. The bore is ground after heat treatment. The taper is matched to your spindle nose. We check each chuck with a dial indicator before packing. Runout is under 0.01 mm.
| Parameter | Value |
|---|---|
| Type | 15-type round bore spring collet chuck |
| Bore diameter range | 3 mm – 15 mm (custom per drawing) |
| Taper angle | 30° (standard), others on request |
| Material | 20CrMnTi, 40Cr, or 65Mn per your spec |
| Hardness | HRC 58–62 (case-hardened) |
| Surface finish | Ra 0.4 on bore, Ra 0.8 on taper |
| Concentricity | ≤ 0.01 mm TIR |
| Tolerance | ± 0.005 mm on critical dimensions |
| Process | CNC turning, milling, heat treatment, centerless grinding, OD/ID grinding |
| Batch size | 1 to 10,000+ |
| Inspection | 100% dimensional check, report per batch |
| Lead time | 10–15 working days (custom), 5 days (standard sizes) |
We use CNC lathes and grinding machines with live tooling. Heat treatment is done in-house in a vacuum furnace. Final grinding is on a Studer or equivalent. Every chuck gets a serial number.
1. Batch-traceable quality. Each batch gets a unique code. We record material heat number, heat treatment parameters, and final inspection data. If a problem shows up on your line, we trace it in minutes. No vague answers.
2. Inspection report per batch. You get a dimensional report with every order. It lists bore size, taper angle, hardness, and runout. We use a CMM and a profilometer. The report is signed by our QC engineer. You do not need to re-measure everything on arrival.
3. One factory for CNC + stamping + springs + heat sinks. Your collet chuck is not an island. Often you also need a spring, a stamped retainer, or a heat sink for the spindle motor. We make all of them under one roof. One purchase order, one shipping point, one responsible party. This cuts your supplier list and your logistics cost.
This collet chuck fits automatic lathes used for high-volume turning of small parts. Typical applications:
If you machine parts under 15 mm diameter on an auto lathe, this chuck is the interface between your spindle and your workpiece. Get it wrong, and every part is scrap. Get it right, and you run unattended for hours.
Looking for a different part? We also machine Custom CNC Auto Lathe 643 Type Round Bore Spring Collet Chuck | BQUQ in the same Dongguan factory.
Q: What is your MOQ? A: No MOQ. We make one piece for prototyping and thousands for production. The price per piece drops with quantity, but we do not turn away small orders.
Q: How do you guarantee tolerance and quality? A: We grind the bore and taper after heat treatment. We measure every unit with a CMM and a dial indicator. The inspection report is included with the shipment. If any dimension is out of spec, we replace the chuck at our cost.
Q: What is your lead time for a custom CNC collet chuck? A: Standard sizes ship in 5 working days. Custom bores and tapers take 10–15 working days from drawing approval. We do not quote lead times we cannot meet.
Q: Can you provide material certificates? A: Yes. We provide mill certificates for the raw material and our own heat treatment report. If you need third-party testing, we arrange it at cost.
Send us your drawing or a sketch. We will check the bore size, taper angle, and material. You get a firm quote in 12 hours.
Email: sc@bquq.com WhatsApp: +86 13713157787
We are a precision manufacturing factory in Dongguan, China, with 20 years of experience. Your custom CNC collet chuck will be made in China, inspected, and shipped on time. No MOQ. No surprises. Send the drawing.
| 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 |
