OpeningYour SK50 collet chuck starts as a drawing. It leaves our floor as a verified part.We machine each custom CNC collet chuck to your print—no generic blanks, no guesswork. Before shipment, every
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OpeningYour SK50 collet chuck starts as a drawing. It leaves our floor as a verified part.We machine each custom CNC collet chuck to your print—no generic blanks, no guesswork. Before shipment, every
Your SK50 collet chuck starts as a drawing. It leaves our floor as a verified part.
We machine each custom CNC collet chuck to your print—no generic blanks, no guesswork. Before shipment, every unit is checked for runout, taper contact, and pull-back accuracy. You get a part that seats true on your spindle.
| Parameter | Value | Notes |
|---|---|---|
| Material | 20CrMnTi or 8620 steel | Case-hardened to 58–62 HRC |
| Taper | SK50 (DIN 69871 / MAS BT) | Ground to AT3 or better |
| Thread type | Tap holder: ER collet or quick-change | Per your drawing |
| Machining process | 5-axis CNC turning + grinding | In-house, single setup for critical features |
| Tolerance | ±0.005 mm on bore, ±0.01 mm on body | CMM verified |
| Surface finish | Ra 0.4 µm on taper, Ra 0.8 µm elsewhere | Optional black oxide or TiN coating |
| Inspection | 100% dimensional check + runout test | Report included per batch |
| Batch size | 1–500 pcs | No MOQ, repeat orders welcome |
We use only hardened and ground steel for the body. The taper is ground in-house, not subcontracted. This keeps your custom CNC collet chuck accurate and repeatable, even under heavy tapping loads.
1. Batch-traceable quality. Every heat of steel is logged. Every machining step is documented. If you need to trace a part back to its raw material lot, we can show you the record. For tool holders, this matters—a soft or mixed batch can ruin a spindle.
2. Inspection report per batch. You don’t have to trust our word. Each batch ships with a dimensional report, material cert, and runout measurement. We use a CMM and a precision air gauge. If a value is out of spec, the part does not ship.
3. One factory for CNC, stamping, springs, and heat sinks. Your SK50 collet chuck might be part of a larger assembly. We also run CNC milling, metal stamping, custom springs, and heat sink lines. Send us the whole BOM. One supplier, one quality standard, one shipping date. Less coordination, fewer surprises.
A custom CNC collet chuck with tap holder is not a shelf item. It is built for specific machines and jobs:
If you are making threaded parts in steel, aluminum, or exotic alloys, this holder is the interface between your program and the finished thread. Get it wrong, and you get broken taps or shallow threads. Get it right, and tapping becomes a non-issue.
Looking for a different part? We also machine Custom CNC Machined HSK63A Collet Chuck with Drill Bit Tool Holder in the same Dongguan factory.
Q: What is your MOQ? A: No MOQ. We make one piece for prototyping or 500 pieces for production. The per-unit price drops with quantity, but the quality standard stays the same.
Q: How do you guarantee tolerance and concentricity? A: We grind the taper and bore in the same setup. Then we measure runout on a test arbor. The inspection report shows the actual values. If you need AT3 or better, we can hold it.
Q: What is the lead time for a custom SK50 collet chuck? A: Standard is 15–20 working days after drawing approval. For urgent orders, we can expedite to 10 days if the material is in stock. We will confirm the exact date in your quote.
Q: Do you provide material certificates and heat treatment reports? A: Yes. Every batch includes a mill certificate for the raw steel and a hardness report after heat treatment. If your customer or auditor requires full traceability, we provide it.
Stop adapting a standard holder to your job. Get a custom CNC collet chuck that fits your machine, your tool, and your tolerance.
Send your drawing in PDF, STEP, or IGES. We reply with a firm quote in 12 hours. No MOQ, no hidden tooling charges.
Email: sc@bquq.com WhatsApp: +86 13713157787
Precision manufacturing, made in China, verified before shipment. Your drawing is the only thing we need to start.
| 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 |
