OpeningYour drawing defines the geometry. Our machining defines the truth of that geometry. We produce ISO30 ER20 collet chucks to your exact specifications, not off-the-shelf approximations. Every un
Your drawing defines the geometry. Our machining defines the truth of that geometry. We produce ISO30 ER20 collet chucks to your exact specifications, not off-the-shelf approximations. Every unit is verified before shipment. We check taper angle, runout, and hardness on calibrated equipment.
At a glance: Taper accuracy within AT3 tolerance. Runout ≤ 0.005 mm at the nose. Lead time 15-20 working days for custom batches. No MOQ. Made in China, shipped worldwide.
We run a dedicated CNC turning and milling cell for collet chucks. The process is stable, repeatable, and documented per batch.
| Parameter | Value |
|---|---|
| Material options | 20CrMnTi, 40Cr, 8620, or per drawing |
| Hardening | Carburized 58-62 HRC, case depth 0.8-1.2 mm |
| Taper accuracy | AT3 per ISO 1947 |
| Runout (TIR) | ≤ 0.005 mm at nose, ≤ 0.008 mm at 100 mm |
| Surface finish | Ra 0.4 µm on taper, Ra 0.8 µm elsewhere |
| Threads | Ground or rolled, Class 2A/2B |
| Balancing | G2.5 at 20,000 RPM optional |
| Process | CNC turning, CNC milling, cylindrical grinding, centerless grinding |
| Inspection | 100% critical dimension check, CMM report per batch |
| Batch size | 1 to 10,000 pieces |
| Lead time | 15 days for prototypes, 20 days for production |
We do not guess. We measure. The inspection report travels with the shipment.
1. Batch-traceable quality. Each heat number and batch is recorded. If a problem appears in your spindle, we trace it to the exact operation and operator. You get a file, not a story.
2. Inspection report per batch. You receive a dimensional report with actual measured values, not just a pass/fail stamp. We show you the numbers for taper angle, runout, and hardness. This is precision manufacturing, documented.
3. One factory for CNC + stamping + springs + heat sinks. Your assembly may need a stamped collar, a spring collet, or a heat sink for the drive unit. We make all of them under one roof. One purchase order, one quality system, one shipping date. Less coordination, fewer surprises.
ISO30 ER20 collet chucks are not decorative. They hold cutting tools in spindles that remove metal.
If your spindle takes ISO30 tooling, this part is the interface between the spindle and the cutting edge. It must be right.
Looking for a different part? We also machine Custom CNC Collet Chuck Tool Holder | Precision HSK63A ER Manufacturing in the same Dongguan factory.
Q: What is the minimum order quantity? A: No MOQ. We make one piece for prototype validation or 10,000 for production. The unit price drops with quantity, but the quality standard does not.
Q: How do you guarantee tolerance and quality? A: We use AT3 taper gauges and a CMM for final inspection. Runout is checked with a dial indicator at the nose and at 100 mm. Hardness is verified with a Rockwell tester. The report is included in the shipment.
Q: What is the lead time for a custom CNC collet chuck? A: 15 working days for prototypes, 20 working days for production batches. If you need faster, tell us at the quote stage. We can split the batch to meet your line stop.
Q: Do you provide material certificates? A: Yes. We supply mill certificates for the raw material and our own heat treatment report. If you require third-party testing, we arrange it at cost.
Send us your PDF or STEP file. We reply with a firm quote in 12 hours. We include material options, price breaks, and a delivery date. No vague estimates.
Email: sc@bquq.com WhatsApp: +86 13713157787
Your drawing, our machines, verified results.
| 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 |
