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 r
Custom CNC Collet Chuck Auto Lathe 36 Type Round Bore Precision
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
Get a Fast Quote for This Part
Send us your drawing / quantity / material — reply within 24h.
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.
Tolerance: ±0.005 mm on bore diameter and taper angle
Lead time: 7–12 days for prototypes, 15–20 days for production runs
No MOQ: order one piece or one thousand
Material: 20CrMnTi or 65Mn, case-hardened to 58–62 HRC
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.
Specifications
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
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.
Three reasons buyers send us their drawings
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.
Where these parts are used
This 36-type round bore collet chuck is used in automatic lathes and CNC turning centers. Common applications include:
Bar feeding in Swiss-type lathes – holds round stock from Ø3 mm to Ø36 mm for precision turning of small components
High-speed turning of fasteners – grips hex, square, or round blanks for bolts, screws, and pins
Second-operation machining – holds pre-machined parts for drilling, tapping, or milling
Watch and instrument parts – concentric gripping for tiny shafts and gears where runout must stay under 0.01 mm
Automotive fuel injector components – stable clamping for hard materials like stainless steel and Inconel
The spring collet design provides fast open-close cycles and consistent gripping force, which reduces cycle time and scrap in production runs.
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 your drawing
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.
