OpeningYour drawing becomes a finished collet chuck. We machine it to your exact bore diameter, taper angle, and slot geometry. Every unit is verified with a full dimensional report before shipment. N
Your drawing becomes a finished collet chuck. We machine it to your exact bore diameter, taper angle, and slot geometry. Every unit is verified with a full dimensional report before shipment. No surprises.
We are a precision manufacturing factory in Dongguan, China, with 20 years of CNC machining experience. Our auto lathe line runs 24/7. We make collet chucks for clients who need repeatable gripping force and long service life.
| Parameter | Value |
|---|---|
| Type | 25 Type round bore spring collet chuck |
| Bore diameter range | 3.0 mm – 25.4 mm |
| Taper angle | 16° (standard) or per drawing |
| Material options | 20CrMnTi, 65Mn, 9CrSi, 42CrMo |
| Hardness | 58–62 HRC (case-hardened) |
| Surface finish | Ra 0.4 μm on bore, Ra 0.8 μm on taper |
| Concentricity | ≤ 0.008 mm TIR |
| Gripping force repeatability | ± 2% across batch |
| Machining process | CNC turning, CNC grinding, wire EDM slotting |
| Heat treatment | Carburizing + quenching + tempering |
| Inspection | 100% dimensional check, batch sample for metallurgy |
| Batch size | 1 – 5,000 pieces |
| Lead time | 7 days (prototype), 12 days (production) |
We grind the taper and bore on the same setup to hold concentricity. Slots are cut with wire EDM to avoid burrs. Each chuck is serial-numbered for traceability.
1. Batch-traceable quality. Every heat treatment batch gets a unique code. We record material lot, furnace curve, and hardness readings. If a problem appears in your line, we can trace it back to the exact batch and date. This is standard for us, not a paid extra.
2. Inspection report per batch. You get a PDF with CMM data for bore diameter, taper angle, concentricity, and surface roughness. We also include a hardness certificate. No generic "certificate of conformance." You see the actual numbers.
3. One factory for CNC + stamping + springs + heat sinks. Your collet chuck is not an isolated part. If your assembly also needs a spring, a stamped retainer, or a heat sink, we make them in the same building. One purchase order, one quality system, one shipping date. Fewer suppliers, fewer delays.
Our 25 Type round bore collet chucks are used in automatic lathes for high-volume turning of small parts. Typical applications:
In each case, the collet chuck is the last thing between the raw bar stock and the finished part. If it grips poorly, everything downstream is scrap.
Looking for a different part? We also machine Custom CNC Collet Chuck Set 15-52mm | Precision Manufacturing No MOQ in the same Dongguan factory.
Q: What is your MOQ? A: No MOQ. We accept one piece for a prototype. Production batches of 100–5,000 pieces are common. Tooling is standard for 25 Type collets, so there is no setup penalty for small orders.
Q: How do you guarantee tolerance and quality? A: We machine to ±0.005 mm on bore and taper. Every piece is measured on a CMM. We send you the inspection report with the shipment. If any dimension is out of spec, we replace the part at our cost, including freight.
Q: What is the lead time for a custom bore size? A: 7 working days for a prototype, 12 working days for production quantities. If you need faster, we can rush a single piece in 3 days for a small expedite fee. We stock raw material for 20CrMnTi and 65Mn in common diameters.
Q: Do you provide material certificates? A: Yes. We supply mill certificates for the raw material, heat treatment reports with hardness curves, and a RoHS/REACH declaration if required. All documents are in English.
Send us your 2D drawing or 3D model. We will check the bore size, taper angle, slot width, and material callout. You get a firm quote within 12 hours, including unit price, tooling cost (if any), and delivery date.
Email: sc@bquq.com WhatsApp: +86 13713157787
We reply in English, directly from the engineer who will quote your job. No sales agents, no middlemen. Custom CNC collet chuck, made in China, with no MOQ and full traceability. Your drawing is safe with us – we sign NDA on request.
| 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 |
