OpeningYour drawing defines the part. We manufacture it.We machine 52-type collets for automatic lathes from hex bar stock. Every collet is made to your exact drawing and verified before shipment. No
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OpeningYour drawing defines the part. We manufacture it.We machine 52-type collets for automatic lathes from hex bar stock. Every collet is made to your exact drawing and verified before shipment. No
Your drawing defines the part. We manufacture it.
We machine 52-type collets for automatic lathes from hex bar stock. Every collet is made to your exact drawing and verified before shipment. No guesswork. No deviations.
We are a precision manufacturing factory in Dongguan, China, with 20 years of experience in CNC machining, metal stamping, springs, and heat sinks. Your collet is made on Swiss-type auto lathes and CNC grinders, then inspected with CMM and air gauges.
| Parameter | Value |
|---|---|
| Type | 52-type collet for automatic lathes |
| Bar stock shape | Hex (hexagonal), sizes 4 mm to 50 mm across flats |
| Material options | 20CrMnTi (case-hardened), 40Cr (quenched & tempered), 65Mn (spring steel) |
| Hardness | 58–62 HRC (case or through-hardened) |
| Tolerance | Bore: ±0.005 mm, hex geometry: ±0.01 mm, concentricity: 0.005 mm TIR |
| Surface finish | Ra 0.4 µm on bore, Ra 0.8 µm on outer diameter |
| Machining process | CNC turning, CNC milling, internal grinding, wire EDM for slots |
| Heat treatment | Carburizing or induction hardening, then tempering |
| Inspection | 100% dimensional check, CMM report per batch |
| Batch size | 1 to 10,000 pieces |
| Lead time | 7 working days for prototypes, 12 days for production batches |
| Packaging | Anti-rust oil, individual plastic sleeve, export carton |
All collets are deburred and pass a 100% fit test with a master hex bar before packing.
1. Batch-traceable quality. Each batch gets a unique heat number and work order. We record material certificates, heat treatment parameters, and final inspection results. If a problem appears in your production, we trace it back to the exact batch and operator. This is standard for us, not an extra service.
2. Inspection report per batch. You receive a dimensional report for every batch, not just a sample. We measure bore diameter, hex width, concentricity, and hardness on each collet. The report is signed by our QC engineer and sent to you with the shipment.
3. One factory for CNC, stamping, spring, and heat sink. Your collet is not the only part in your machine. We also make stamped components, precision springs, and heat sinks. Send us your full BOM, and we coordinate all parts under one roof. Fewer suppliers, fewer logistics issues, faster assembly for you.
52-type collets with hex bar stock are used in automatic lathes and CNC turning centers for machining hexagonal bars. Typical applications:
The collet’s hex bore grips the bar stock securely, preventing rotation during high-speed machining. This reduces cycle time and improves thread and hex machining accuracy.
Looking for a different part? We also machine Custom CNC Collet Chuck Series 25-52 | Precision Manufacturing Made in China in the same Dongguan factory.
Q: Do you have a minimum order quantity? A: No. We accept orders from 1 piece. For prototypes, we charge a small setup fee. For production batches, the setup fee is waived. No MOQ, no hidden charges.
Q: How do you control tolerance and quality? A: We use CNC grinders with in-process gauging. After machining, each collet is checked with an air gauge and CMM. Our tolerance is ±0.005 mm on the bore, and we provide a full inspection report per batch. If any collet fails, we replace it at no cost.
Q: What is your lead time for custom collets? A: Prototype (1–5 pieces): 7 working days. Production (50+ pieces): 12 working days. For urgent orders, we can expedite to 5 days with a 15% rush fee. We ship via DHL, FedEx, or UPS worldwide.
Q: Can you provide material certificates and heat treatment reports? A: Yes. We supply mill certificates for raw material, heat treatment curves, and hardness test reports. All documents are in English and included with the shipment.
Send us your drawing in PDF, STEP, or IGES format. We will review the material, tolerance, and quantity, and send you a firm quote within 12 hours.
Email: sc@bquq.com WhatsApp: +86 13713157787
We are a precision manufacturing factory in Dongguan, China. Custom CNC collet chuck, made in China, with no MOQ. Your drawing is the starting point. We handle the rest.
| Parameter | Capability |
|---|---|
| Materials | AL6061/7075, SUS303/304/316, 45# steel, T2 copper, H59 brass, POM, PEEK, nylon |
| Tolerance | ±0.005mm standard, ±0.003mm on request |
| Machines | 3/4/5-axis CNC, turn-mill, Swiss lathe |
| Surface | Anodizing, nickel, zinc, passivation, sandblast, polish |
| Size Range | Max 400 x 300 x 200 mm |
| Prototype | 72 hours, no MOQ on samples |
| Inspection | Full report per batch, CMM data on request |
