OpeningYour tool holder is only as good as its taper fit and runout. We machine HSK63A collet chucks to your exact drawing, not from stock blanks. Every chuck is verified on a CMM before it leaves our
Your tool holder is only as good as its taper fit and runout. We machine HSK63A collet chucks to your exact drawing, not from stock blanks. Every chuck is verified on a CMM before it leaves our floor.
We are a precision manufacturing factory in Dongguan, China, with 20 years in CNC machining, metal stamping, springs, and heat sinks. Your drawing is our starting point.
| Parameter | Value |
|---|---|
| Taper standard | HSK63A (DIN 69893) |
| Collet type | ER32 or ER40 (per your spec) |
| Material | 20CrMnTi, 8620, or 42CrMo4 |
| Hardening | Carburized or induction, 58–62 HRC |
| Surface finish | Ra 0.4 µm on taper, Ra 0.8 µm elsewhere |
| Runout (TIR) | ≤ 0.005 mm at nose, ≤ 0.010 mm at 100 mm |
| Balance grade | G2.5 @ 25,000 rpm (optional) |
| Machining process | CNC turning, 5-axis milling, ID/OD grinding |
| Tolerance | ± 0.005 mm on critical diameters |
| Inspection | CMM report, runout gauge, hardness test |
| Batch size | 1–500 pcs, no MOQ |
| Lead time | 15–20 days for custom, 7 days for standard |
We use Okuma and Mazak CNC lathes, a Hermle 5-axis mill, and Studer grinders for the taper. Each chuck is serialized and matched to its inspection report.
1. Batch-traceable quality. Every heat number, every batch, every operator is logged. If a part fails in your spindle, we can trace it back to the exact grinding wheel and coolant batch. You get a full traceability sheet with your shipment.
2. Inspection report per batch. We do not ship without a CMM report. You receive runout values, taper contact percentage, hardness readings, and surface roughness data for each batch. No averages, no sampling – every chuck is measured.
3. One factory for CNC + stamping + spring + heatsink. Your tool holder is not an isolated part. If your assembly needs a spring collet, a stamped retention knob, or a heat sink for the spindle drive, we make it under one roof. Fewer suppliers, fewer tolerance stacks, one invoice.
Custom CNC collet chucks with HSK63A tapers are used in:
In all these cases, the collet chuck is the last mechanical link between the spindle and the cutting edge. A 0.01 mm runout error at the chuck becomes a 0.03 mm error at the drill tip. Buyers who need repeatable hole position and size send us their drawings.
Looking for a different part? We also machine Custom CNC Collet Chuck Tool Holder HSK50 ER20 Precision Manufacturing in the same Dongguan factory.
Q: What is your MOQ? A: No MOQ. We make one prototype or a full production run. Many buyers start with 1–2 samples to verify fit and runout, then scale up.
Q: How do you guarantee tolerance and quality? A: We grind the taper after heat treatment, not before. Every chuck is measured on a CMM with a calibrated probe. Runout is checked with a precision test bar. We send the report with the parts.
Q: What is your lead time for custom chucks? A: 15–20 working days for a custom drawing. Standard HSK63A ER32 chucks ship in 7 days. If you need faster, we can discuss a partial rush for an additional fee.
Q: Do you provide material certificates? A: Yes. We supply mill certificates for the raw material, heat treatment reports, and hardness test results. All documents are in English and can be stamped by our QC manager.
Send us your 2D or 3D file. We will review the taper, collet size, and any special balance requirements. You get a firm quote within 12 hours. No hidden costs, no vague promises.
Email: sc@bquq.com WhatsApp: +86 13713157787
We are a precision manufacturing partner in Dongguan, China. Your custom CNC collet chuck is made to your drawing, verified before shipment, and ready to run in your spindle.
| 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 |
