OpeningWe machine your double ended collet chuck to your exact drawing. Not a catalog part. Not a modified standard. Your dimensions, your tolerances, your material.Every chuck is
Custom CNC Collet Chuck Auto Lathe Double Ended Precision Made in China
OpeningWe machine your double ended collet chuck to your exact drawing. Not a catalog part. Not a modified standard. Your dimensions, your tolerances, your material.Every chuck is verified on our CMM
Get a Fast Quote for This Part
Send us your drawing / quantity / material — reply within 24h.
We machine your double ended collet chuck to your exact drawing. Not a catalog part. Not a modified standard. Your dimensions, your tolerances, your material.
Every chuck is verified on our CMM before shipment. You get the part, not a surprise.
Tolerance: ±0.005 mm on critical diameters
Lead time: 15-20 working days after drawing approval
No MOQ: order one piece or one thousand
Material: 20CrMnTi, 40Cr, 65Mn, or your specified grade
Hardness: 58-62 HRC after heat treatment
Made in China, precision manufacturing line, 20 years export experience
Specifications
Parameter
Value
Material options
20CrMnTi, 40Cr, 65Mn, 9SiCr, SUS440C
Heat treatment
Carburizing or induction hardening, 58-62 HRC
Outer diameter range
10 mm – 200 mm
Inner bore range
3 mm – 80 mm
Concentricity (OD to bore)
≤ 0.005 mm
Slot width tolerance
±0.01 mm
Surface roughness
Ra 0.4 on bore, Ra 0.8 on OD
Machining process
CNC turning, CNC milling, wire EDM for slots
Deburring
Manual and vibratory, all edges broken
Batch size
1 – 10,000 pieces, no MOQ
Inspection
100% critical dimensions, CMM report per batch
Marking
Laser engraving per your spec (part no., date code)
We run both CNC Swiss lathes and fixed-head auto lathes. For double ended collets, we use wire EDM to cut the slots after heat treatment. This keeps slot width consistent and burr-free. We do not grind slots; we cut them with EDM for repeatability.
Three reasons buyers send us their drawings
1. Batch-traceable quality.
Each batch gets a unique heat number and process card. We record material cert, heat treatment curve, and final inspection data. If you have a problem six months later, we trace it back to the exact batch and machine. No guesswork.
2. Inspection report per batch.
You receive a dimensional report with every shipment. CMM data for bore, OD, slot width, concentricity. Hardness test results. Material cert from the mill. This is not a generic "QC passed" sticker. It is real numbers you can audit.
3. One factory for CNC + stamping + springs + heat sinks.
Your collet chuck is not the only part in your assembly. We also run stamping dies, coil springs, and aluminum heat sinks. Send us the whole BOM. One supplier, one shipping point, one invoice. Fewer emails, fewer delays, lower logistics cost.
Where these parts are used
Double ended collet chucks are clamping devices for automatic lathes. They hold round, hex, or square bar stock during machining. Common applications:
Swiss-type CNC lathes – clamping small diameter stock (3-20 mm) for watch parts, medical screws, dental implants.
Multi-spindle auto lathes – high volume production of brass fittings, valve cores, electrical terminals.
Secondary machining fixtures – holding finished parts for drilling, tapping, or slotting on CNC mills.
Pneumatic clamping systems – used in automated assembly lines for quick changeover between part sizes.
Hydraulic chucks – for heavy duty turning of steel bars in transfer lines.
The double ended design means you can flip the collet when one end wears. This doubles service life. It is common in high cycle production where tool change downtime is expensive.
Q: What is your MOQ?
A: No MOQ. We accept one piece for prototype validation. For production, we suggest ordering at least 50 pieces to amortize setup cost, but it is not required.
Q: How do you control tolerance and concentricity?
A: We machine the OD and bore in one clamping setup on the CNC lathe. This eliminates runout from re-chucking. After heat treatment, we wire EDM the slots. Final concentricity is verified on a CMM with a 0.5 µm resolution. We hold ±0.005 mm on critical diameters.
Q: What is your lead time?
A: 15-20 working days for standard materials and heat treatment. If you need expedited service, we can do 10 working days for an additional 15% surcharge, subject to material availability.
Q: Do you provide material certificates?
A: Yes. We provide mill test certificates for the raw material, heat treatment records, and hardness test reports. All documents are in English and can be notarized if your customer requires it.
Send your drawing
Email your PDF or STEP file to sc@bquq.com. Include material, hardness, and quantity. We reply with a firm quote within 12 hours. Not a ballpark. A fixed price with payment terms.
Prefer chat? WhatsApp +86 13713157787. We answer in English, Chinese, or Spanish.
Your custom CNC collet chuck, made in China, verified before shipment. No MOQ. Send the drawing today.
