OpeningYour drawing defines the part. We machine it. That is the whole process.This is a 630 type round bore spring collet chuck for auto lathes. We make it to your exact dimension
Custom CNC Collet Chuck 630 Type Auto Lathe Round Bore | BQUQ
OpeningYour drawing defines the part. We machine it. That is the whole process.This is a 630 type round bore spring collet chuck for auto lathes. We make it to your exact dimensions. Not from stock. N
Get a Fast Quote for This Part
Send us your drawing / quantity / material — reply within 24h.
Your drawing defines the part. We machine it. That is the whole process.
This is a 630 type round bore spring collet chuck for auto lathes. We make it to your exact dimensions. Not from stock. Not from a catalog. From your print.
Before shipment, every chuck is verified on a CMM. You get the report. No surprises.
Tolerance: ±0.005 mm on bore and taper
Lead time: 10-15 working days for prototypes
No MOQ — order one piece or one thousand
Material: 65Mn, 60Si2Mn, or your specified alloy
Hardness: 45-52 HRC after heat treatment
We are a precision manufacturing factory in Dongguan, China. 20 years in CNC machining, stamping, springs, and heat sinks. The collet chuck is not a side project. It is core work.
Specifications
Parameter
Value
Type
630 type round bore spring collet chuck
Application
Auto lathe, CNC lathe, Swiss-type machines
Bore diameter
3 mm – 60 mm (custom per drawing)
Outer diameter
Up to 200 mm
Material options
65Mn, 60Si2Mn, 9SiCr, 40Cr, or customer-specified
Hardness
45-52 HRC (spring temper)
Tolerance
±0.005 mm on bore, ±0.01 mm on outer diameter
Surface finish
Ra 0.4 µm on bore, Ra 0.8 µm on taper
Slit width
0.3 mm – 1.5 mm, EDM wire cut
Heat treatment
Oil quenched, tempering to spec
Inspection
100% CMM check before shipment
Batch size
1 – 10,000 pieces
Lead time
10-15 days prototype, 20-30 days production
Certification
Material certs, heat treatment report, inspection report
We use CNC grinding for the bore and taper. Slits are cut by wire EDM. This gives clean edges and consistent spring action. No burrs. No drift.
Three reasons buyers send us their drawings
1. Batch-traceable quality.
Every batch gets a unique lot number. We track material, heat treatment, and grinding parameters for that lot. If you have a problem, we trace it back to the exact operation. You get full documentation. This is not a luxury. It is standard for us.
2. Inspection report per batch.
You do not have to ask for it. It is included. The report covers bore diameter, taper angle, hardness, and surface finish. We use a CMM and a Rockwell hardness tester. The numbers are real. We sign them.
3. One factory for CNC + stamping + springs + heat sinks.
Your collet chuck is often part of a larger assembly. We make the chuck. We also make the spring inside it, the stamped housing, and the heat sink if you need one. One vendor. One quality system. One shipping point. Less coordination, fewer delays.
Where these parts are used
The 630 type round bore collet chuck is for workholding on automatic lathes. It grips round bar stock during turning, threading, and parting operations.
CNC Swiss lathes for medical device components — pins, bone screws, dental implants
Auto lathes for electronic connector pins and terminals
Watch and clock parts — small shafts, gears, pinions
Fastener production — screws, bolts, rivets
Automotive fuel injector components
Precision instrument shafts for motors and encoders
These chucks run at high spindle speeds. They need consistent clamping force and repeatable concentricity. Our slit geometry and heat treatment give you that. Run them at 8,000 RPM. They hold.
Questions buyers ask before ordering
Q: What is your MOQ?
A: No MOQ. We make one prototype for you to test. Then you decide on production quantity. Many buyers start with 5-10 pieces to validate fit and performance.
Q: How do you control tolerance and quality?
A: We grind the bore and taper to ±0.005 mm. After heat treatment, we re-grind to correct any distortion. Every piece is checked on a CMM. You get the inspection report with the shipment.
Q: What is your lead time?
A: Prototype: 10-15 working days after drawing approval. Production: 20-30 working days. If you need faster, tell us. We can split the batch or run overtime.
Q: Can you provide material certificates?
A: Yes. We provide mill certificates for the raw material, heat treatment records, and our own inspection report. All traceable to your batch number.
Send your drawing
Send us your print. We will quote you within 12 hours.
We will confirm material, tolerance, and lead time. If your drawing has issues, we will tell you before we quote. That is how we work.
Email: sc@bquq.com
WhatsApp: +86 13713157787
Custom CNC collet chuck, made in China, precision manufacturing, no MOQ. That is what we do. Send the drawing.
