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. Bef
Custom CNC Collet Chuck SK50 with Tap Holder | BQUQ Precision Manufacturing
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
Get a Fast Quote for This Part
Send us your drawing / quantity / material — reply within 24h.
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.
Tolerance: 0.005 mm on critical diameters
Concentricity: ≤ 0.008 mm TIR at nose
Lead time: 15–20 working days
No MOQ—order one piece for prototype validation
Specifications
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.
Three reasons buyers send us their drawings
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.
Where these parts are used
A custom CNC collet chuck with tap holder is not a shelf item. It is built for specific machines and jobs:
CNC machining centers – For rigid tapping and thread milling, especially when the spindle has a SK50 taper.
Automatic tool changers – The pull-back stud and flange dimensions are matched to your ATC arm.
High-production tapping stations – Where tool change time is critical and runout must stay under 0.01 mm.
Retrofit or legacy machines – When the original holder is obsolete, we reverse-engineer from your sample or drawing.
Multi-spindle setups – For consistent thread depth across several spindles, we hold the collet pocket depth to ±0.01 mm.
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.
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.
Send your drawing
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.
