OpeningYour drawing defines the part. We machine it to your exact dimensions, verify it before shipment, and back it with a full inspection report. No surprises.This is a 36-type round bore spring col
Your drawing defines the part. We machine it to your exact dimensions, verify it before shipment, and back it with a full inspection report. No surprises.
This is a 36-type round bore spring collet chuck for auto lathes. It holds bar stock or workpieces with concentric gripping force, designed for high-speed turning and Swiss-type machining.
We are a precision manufacturing factory in Dongguan, China, with 20 years of CNC machining experience. Every collet chuck is made to your drawing, not from stock blanks.
| Parameter | Value |
|---|---|
| Type | 36-type round bore spring collet chuck |
| Bore diameter range | Ø3 mm – Ø36 mm (custom per drawing) |
| Outer diameter | Ø36 mm standard, custom available |
| Taper angle | 30° standard, custom per machine spindle |
| Material | 20CrMnTi (case-hardened), 65Mn (spring steel), or 9SiCr |
| Hardness | 58–62 HRC after heat treatment |
| Surface finish | Ra 0.4 µm on bore, Ra 0.8 µm on taper |
| Tolerance | ±0.005 mm on bore, ±0.01 mm on concentricity |
| Process | CNC turning, internal grinding, wire cutting, heat treatment |
| Inspection | 100% dimensional check, hardness test, concentricity test |
| Batch size | 1 to 10,000 pieces, no MOQ |
| Packaging | Anti-rust oil, individual foam wrap, export carton |
We use CNC lathes and internal grinders for the bore and taper. Wire cutting handles the spring slots. Heat treatment is done in-house with a vacuum furnace for consistent hardness. Each batch is traceable to its raw material lot number.
1. Batch-traceable quality Every collet chuck gets a unique batch number. We record raw material certificates, heat treatment curves, and final inspection data for that batch. If you need to trace a part back to its steel coil, we can do it in minutes.
2. Inspection report per batch You get a full inspection report with every shipment. It includes bore diameter measurements, taper angle checks, hardness readings, and concentricity data. No generic certificates. Real numbers from real instruments.
3. One factory for CNC, stamping, springs, and heat sinks We run CNC machining, metal stamping, spring manufacturing, and heat sink production lines under one roof. Your collet chuck can be paired with springs, stamped housings, or heat sinks in the same order. Fewer suppliers, fewer logistics headaches, one quality standard.
This 36-type round bore collet chuck is used in automatic lathes and CNC turning centers. Common applications include:
The spring collet design provides fast open-close cycles and consistent gripping force, which reduces cycle time and scrap in production runs.
Looking for a different part? We also machine Custom CNC Collet Chuck with Spanner Wrench Set | Precision Manufacturing in the same Dongguan factory.
Q: What is your MOQ? A: No MOQ. We make one prototype or a full production run. Many buyers start with a single piece to verify fit and finish.
Q: How do you control tolerance and quality? A: We machine to ±0.005 mm on the bore and taper. Each piece is measured with a bore gauge and a CMM for taper angle. Hardness is tested on a Rockwell tester. The inspection report is included with your shipment.
Q: What is the lead time? A: Prototypes ship in 7–12 days. Production batches of 100–500 pieces ship in 15–20 days. Rush orders are possible for an additional fee.
Q: Can you provide material certificates? A: Yes. We provide mill certificates for raw material, heat treatment reports, and our own dimensional inspection report. All documents are in English.
Send us your drawing for a firm quote within 12 hours. We will review the material, tolerance, and finish, then give you a price and lead time. No obligation, no hidden fees.
Email: sc@bquq.com WhatsApp: +86 13713157787
Your custom CNC collet chuck, made in China, with precision manufacturing you can verify. Send your drawing today.
| 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 |
