OpeningYour drawing defines the part. We machine it to that drawing, then verify it before shipment. This is not a catalog item. It is a custom CNC collet chuck built for your spindle, your workpiece,
Your drawing defines the part. We machine it to that drawing, then verify it before shipment. This is not a catalog item. It is a custom CNC collet chuck built for your spindle, your workpiece, and your tolerance stack-up.
The 52 Type auto lathe collet is a high-precision workholding component. We make it from your print, with your bore geometry, your hex size, and your material specification. Every unit is inspected against your critical dimensions. We ship only what passes.
| Parameter | Value | Notes |
|---|---|---|
| Material | 20CrMnTi, 65Mn, or 9SiCr | Per your drawing or application |
| Hardness | HRC 58–62 (case-hardened) | Core hardness HRC 30–40 |
| Tolerance | ±0.005 mm on bore and hex | Concentricity ≤ 0.005 mm |
| Surface finish | Ra 0.4 µm on bore, Ra 0.8 µm elsewhere | Optional mirror polish |
| Slots | Milled or wire-cut, full-length or partial | Slot width ±0.02 mm |
| Heat treatment | Carburizing or through-hardening | Depth 0.3–0.8 mm per spec |
| Process | CNC turning, milling, grinding, wire EDM | Auto lathe 52 Type profile |
| Inspection | 100% dimensional check per batch | CMM report included |
| Batch size | 1–5,000 pieces | No MOQ, no setup penalty |
| Lead time | 7–12 working days | Faster for small batches |
We use CNC lathes for the outer profile and bore, then wire EDM for the hex and slots. Grinding is done on the bore and taper for concentricity. Each collet is individually numbered for traceability.
1. Batch-traceable quality. Every batch gets a unique lot number. We record material heat numbers, machine parameters, and inspection results. If a problem appears in your production, we can trace it back to the exact batch and process step. You get a full inspection report per batch, not a generic certificate.
2. Inspection report per batch. We measure every critical dimension on every part. The report lists bore diameter, hex size, slot width, hardness, and concentricity. You receive it with the shipment. No surprises on your side.
3. One factory for CNC + stamping + springs + heat sinks. We run four production lines under one roof. If your assembly needs a collet, a stamped retainer, a spring, and a heat sink, we make them all. You deal with one engineer, one quality system, one shipping point. Less coordination, fewer delays.
The 52 Type hex bore spring collet is a workhorse in automatic lathes and Swiss-type machines. It holds hexagonal bar stock, square stock, or round stock with a hex-shaped bore. Common applications:
The spring action of the collet allows quick release and reload, reducing cycle time. The hex bore prevents rotation of the workpiece, so you can machine flats, holes, or threads without a separate indexing fixture.
Looking for a different part? We also machine Custom CNC Collet Chuck Auto Lathe 40 Type Round Bore | BQUQ in the same Dongguan factory.
Q: What is the minimum order quantity? A: No MOQ. We accept one piece for prototyping or a full production run. The unit price drops with quantity, but we do not penalize small orders.
Q: How do you guarantee tolerance and quality? A: We inspect every part against your drawing. Bore and hex are measured with CMM and air gauges. Hardness is tested on each batch. We send the inspection report with the shipment. If a part fails, we replace it at no cost.
Q: What is the lead time? A: 7–12 working days after drawing approval. Prototype orders (1–5 pieces) often ship in 5–7 days. For repeat orders, we keep your tooling and program on file, so lead time drops to 5–8 days.
Q: Can you provide material certificates? A: Yes. We provide mill certificates for the raw material, heat treatment reports, and hardness test results. All certificates are traceable to the batch number.
Send us your drawing in PDF, STEP, or IGES format. We will review the geometry, confirm the material and heat treatment, and give you a firm quote within 12 hours. No obligation, no hidden costs.
Email: sc@bquq.com WhatsApp: +86 13713157787
Precision manufacturing is our core. Custom CNC collet chuck is our specialty. Made in China, with the quality you expect. No MOQ, no minimum order penalty. Send your drawing today.
| 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 |
