OpeningYour drawing defines the part. We machine it. Before any shipment leaves our Dongguan factory, every collet is checked against your critical dimensions. We do not guess. We
Custom CNC Machined Auto Lathe 36 Type External Thread Extended Collet
OpeningYour drawing defines the part. We machine it. Before any shipment leaves our Dongguan factory, every collet is checked against your critical dimensions. We do not guess. We measure.This is a 36
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Send us your drawing / quantity / material — reply within 24h.
Your drawing defines the part. We machine it. Before any shipment leaves our Dongguan factory, every collet is checked against your critical dimensions. We do not guess. We measure.
This is a 36-type extended collet for auto lathes, with an external thread for direct mounting. It is a wear part that holds your bar stock. If the collet is off, your part is off. We make it right.
At a glance: Tolerance ±0.005 mm on bore and thread pitch. Lead time 7–12 working days after drawing approval. No MOQ. Material certs included with every batch.
CNC turning, CNC milling, wire EDM for slots (if specified)
Heat treatment
Carburizing + quenching + tempering, or induction hardening
Inspection
100% dimensional check, batch sample for metallurgical test
Batch size
1 piece to 10,000 pieces
Lead time
7 days (prototype), 12 days (production batch)
Country of origin
Made in China, Dongguan factory
We use CNC lathes with live tooling for the thread and bore in one setup. This eliminates re-clamping errors. For hardened collets, we grind the bore after heat treatment. That is how we hold ±0.005 mm.
Three reasons buyers send us their drawings
1. Batch-traceable quality.
Each batch gets a unique heat number and work order. If you need to trace a material cert or a process record, we can pull it in minutes. No mixing of steel grades. No "we think it was this material." We know.
2. Inspection report per batch.
You get a dimensional report with actual measured values, not just a pass/fail stamp. We record bore diameter, thread pitch diameter, concentricity, and hardness. If you have a CMM program, send it. We will run it.
3. One factory for CNC, stamping, springs, and heat sinks.
Your collet is not the only part you buy. We also run CNC machining lines, metal stamping presses, spring coiling machines, and heat sink fabrication. Send us an assembly drawing with multiple components. We quote the whole set. One supplier, one quality system, one shipping point.
Where these parts are used
This collet is for automatic lathes (Swiss-type and cam-type) that machine small turned parts. Typical applications:
Watch and jewelry components: Pinions, stems, and cases. Bore accuracy matters at this scale.
Medical device implants and instruments: Bone screws, drill bits, and guide pins. Material traceability is mandatory here.
Automotive fuel systems: Injector needles, nozzle bodies, and valve seats. High-volume runs need collets that hold tolerance over millions of cycles.
Electronic connectors: Brass and beryllium copper pins for terminals. Extended collets reach deeper into the bar stock to reduce waste.
The external thread on this 36-type collet lets you screw it directly into the spindle nose. No adapter ring. Less runout. Faster changeover.
Q: What is your MOQ?
A: No MOQ. We make one piece for a prototype or 10,000 pieces for production. The unit price drops with quantity, but we do not turn away a single-piece order.
Q: How do you guarantee tolerance and quality?
A: We machine to your drawing, then inspect 100% of critical dimensions. For bore and thread, we use air gauges and thread mics. We send the inspection report with the shipment. If a part is out of spec, we replace it at no cost.
Q: What is your lead time?
A: 7 working days for a prototype after drawing approval. 12 working days for production batches. If you need it faster, tell us. We can split the batch and air-ship the first part.
Q: Can you provide material certificates?
A: Yes. Every batch includes a mill test certificate for the raw material. We also provide hardness test reports and, if requested, a metallurgical analysis.
Send your drawing
Stop waiting for a quote that takes a week. Send us your drawing today. We reply with a firm price and delivery date within 12 hours.
Email: sc@bquq.com
WhatsApp: +86 13713157787
Precision manufacturing is our only business. Custom CNC collet chuck, made in China, no MOQ. Your drawing is the starting point. We handle the rest.
