OpeningYou send the drawing. We machine the collet. Every unit is verified before shipment.This is the full series of auto lathe collets, from 25 mm to 700 mm in gripping diameter.
Custom CNC Collet Chuck 25-700mm | Precision Manufacturing Made in China
OpeningYou send the drawing. We machine the collet. Every unit is verified before shipment.This is the full series of auto lathe collets, from 25 mm to 700 mm in gripping diameter. We build them to yo
Get a Fast Quote for This Part
Send us your drawing / quantity / material — reply within 24h.
You send the drawing. We machine the collet. Every unit is verified before shipment.
This is the full series of auto lathe collets, from 25 mm to 700 mm in gripping diameter. We build them to your exact print, not from a catalog. If you need a custom CNC collet chuck for a specific spindle, taper, or material, this is the line to spec.
Tolerance: ±0.005 mm on critical diameters
Lead time: 15–20 days for standard custom sizes
No MOQ: order one piece or one thousand
Material: 20CrMnTi or 8620 steel, case-hardened to 58–62 HRC
Verification: 100% dimensional check before packing
Specifications
Parameter
Value
Gripping range
25 mm – 700 mm
Material options
20CrMnTi, 8620, 4140, 65Mn
Hardness
58–62 HRC (case-hardened)
Tolerance (ID/OD)
±0.005 mm
Concentricity
≤0.01 mm TIR
Surface finish
Ra 0.4 µm on gripping surfaces
Slots
Wire-cut EDM, no burr
Heat treatment
Carburized, quenched, tempered
Inspection
CMM report per batch, material certs included
Batch size
1 – 10,000 pcs
Lead time
15 days for prototypes, 20 days for production
Country of origin
Made in China, Dongguan factory
We run these on Citizen, Star, and Tsugami auto lathes for the smaller range, and on CNC turning centers for the 300–700 mm sizes. Slots are cut after heat treatment to hold geometry. We do not grind after slotting unless your print calls for it.
Three Reasons Buyers Send Us Their Drawings
1. Batch-traceable quality.
Every heat lot gets a unique code. We record material cert, heat treatment curve, and final inspection data against that code. If you have a failure in the field, we can trace it back to the exact batch in minutes. No guesswork.
2. Inspection report per batch.
You get a CMM report with every shipment. Critical dimensions are measured on a Zeiss CMM, not a caliper. We also include a hardness test report and a surface roughness reading. If you need PPAP Level 3, we do that too.
3. One factory for CNC + stamping + spring + heatsink.
Your collet chuck is not the only part you buy. We run a 20-year-old factory with CNC machining, metal stamping, springs, and heatsink lines under one roof. Send us the whole assembly. We coordinate the processes, reduce your supplier count, and cut your logistics cost. One purchase order, one quality standard.
Where These Parts Are Used
Custom CNC collet chucks from this series go into high-volume precision turning operations. Typical applications:
Medical device manufacturing: Gripping small titanium and stainless parts for bone screws and surgical instruments. The 25–50 mm range is common here.
Automotive fuel systems: Holding injector bodies and valve seats on Swiss-type lathes. Tolerances hold up over 100,000 cycles.
Aerospace fasteners: Collets for 300–700 mm bar stock in large CNC lathes. We case-harden to resist wear from Inconel and titanium.
Electronics connectors: Small collets for brass and copper pins, where surface finish on the gripping face prevents marking.
Hydraulic fittings: Steel collets for 60–120 mm tube ends, with slots cut to handle hex and round profiles.
If your part spins in a lathe, this collet holds it.
Q: What is the minimum order quantity?
A: No MOQ. We machine one prototype for you to test, then scale to your production volume. Many buyers start with a single piece to verify fit and runout.
Q: How do you guarantee tolerance and concentricity?
A: We cut slots after heat treatment to avoid distortion. Then we measure every unit on a CMM. Concentricity is held to 0.01 mm TIR. If it does not meet your print, we do not ship it.
Q: What is the lead time for a custom collet?
A: 15 days for a prototype, 20 days for production batches. If you need it faster, tell us. We have a fast-track line for emergency replacements.
Q: Do you provide material certificates?
A: Yes. Every batch ships with a mill certificate for the raw material, a heat treatment report, and our inspection data. Third-party certification is available on request.
Send Your Drawing
Stop adapting a standard collet to your spindle. Send us your print and get a firm quote in 12 hours.
We reply with a price, a lead time, and a technical review of your drawing. If we see a potential issue with your design, we tell you before you pay.
Email: sc@bquq.com
WhatsApp: +86 13713157787
Precision manufacturing, made in China, no MOQ. Your drawing, our machines, verified results.
