OpeningYour drawing becomes a finished HSK50 ER20 collet chuck. We machine it from solid steel, grind the critical surfaces, and verify the taper and runout before shipment. No surprises.Tolerance: 0.
Your drawing becomes a finished HSK50 ER20 collet chuck. We machine it from solid steel, grind the critical surfaces, and verify the taper and runout before shipment. No surprises.
| Parameter | Value |
|---|---|
| Standard | HSK50, ER20 collet seat |
| Material | 20CrMnTi, 8620, or 42CrMo (per drawing) |
| Hardness | 58–62 HRC case-hardened, core 30–35 HRC |
| Machining | 5-axis CNC milling, CNC turning, cylindrical grinding |
| Tolerance | 0.005 mm TIR on taper, 0.01 mm on collet seat |
| Surface finish | Ra 0.4 taper, Ra 0.8 flange and body |
| Balancing | G2.5 at 20,000 rpm (optional G1.0) |
| Coating | TiN, TiAlN, or black oxide (optional) |
| Inspection | 100% taper gauge check, runout report per batch |
| Batch size | 1–5,000 pieces, no MOQ |
| Lead time | 10 days for samples, 15 days for production |
| Country | Made in China, Dongguan factory |
We use 5-axis CNC mills for the complex HSK50 taper and drive slots. Cylindrical grinders finish the taper and collet seat. Every chuck is checked with a precision taper gauge and a dial indicator for runout. We do not ship parts that fail our internal QC.
1. Batch-traceable quality. Every batch gets a unique job number. We record material heat numbers, machine settings, and operator IDs. If you need to trace a part back to its steel, we have the paperwork. This matters for aerospace and medical tooling.
2. Inspection report per batch. You receive a dimensional report with every shipment. It lists taper angle, runout, hardness, and surface finish. No generic "certificate of conformance." You get actual numbers, measured on actual parts. If you need third-party inspection, we coordinate that too.
3. One factory for CNC + stamping + springs + heat sinks. We are not a trading company. Our 5,000 m² facility runs CNC machining, metal stamping, spring coiling, and heat sink extrusion lines. You send us a drawing for a collet chuck, and we can also quote the retention knobs, springs, or coolant nozzles in the same email. Fewer suppliers, shorter lead times, one responsible party.
HSK50 ER20 collet chucks are standard in high-speed machining centers. They hold cutting tools with ER20 collets, typically for drills, end mills, and reamers up to 13 mm shank diameter.
Looking for a different part? We also machine Custom CNC Collet Chuck Tool Holder | Precision Manufacturing No MOQ in the same Dongguan factory.
Q: What is your MOQ? A: No MOQ. We make one piece for sample validation or 5,000 pieces for production. The unit price drops with quantity, but we do not force you to buy more than you need.
Q: How do you guarantee tolerance and quality? A: We grind the HSK50 taper and ER20 seat on the same setup to hold 0.005 mm TIR. Every part is checked with a taper gauge. We send a runout report with each batch. If a part fails your incoming inspection, we replace it at no cost.
Q: What is your lead time for custom CNC collet chucks? A: Samples take 10 working days. Production runs take 15 working days after drawing approval. For urgent orders, we can expedite to 5 days for an additional fee.
Q: Can you provide material certificates? A: Yes. We supply mill certificates for the raw steel, heat treatment reports, and our own dimensional inspection report. All documents are traceable to the batch number.
Send us your PDF or STEP file. We will review the geometry, material, and tolerances. You get a firm quote within 12 hours, including unit price, lead time, and shipping cost. No obligation, no hidden fees.
Email: sc@bquq.com WhatsApp: +86 13713157787
Precision manufacturing, made in China, no MOQ. Your custom CNC collet chuck, verified before shipment.
| 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 |
