OpeningYour drawing defines the part. We machine it.Every custom CNC collet chuck we ship is made to your exact drawing, verified with a full inspection report before it leaves our
Custom CNC Collet Chuck 15 Type for Small Round Bar Machining
OpeningYour drawing defines the part. We machine it.Every custom CNC collet chuck we ship is made to your exact drawing, verified with a full inspection report before it leaves our floor. No surprises
Get a Fast Quote for This Part
Send us your drawing / quantity / material — reply within 24h.
Every custom CNC collet chuck we ship is made to your exact drawing, verified with a full inspection report before it leaves our floor. No surprises. No “close enough.”
Tolerance: ±0.005 mm on bore and taper
Lead time: 7–12 days for standard materials
No MOQ: order 1 piece or 10,000
Material: 20CrMnTi, 40Cr, or 65Mn, case-hardened to 58–62 HRC
We are a precision manufacturing factory in Dongguan, China, with 20 years of CNC machining experience. We make collets for auto lathes, Swiss-type machines, and CNC turning centers. Send us your print. We will quote it in 12 hours.
Specifications
Parameter
Value
Product type
CNC collet chuck, Type 15 (auto lathe series)
Bar diameter range
1.0 mm – 15.0 mm (round bar)
Material options
20CrMnTi, 40Cr, 65Mn, 9SiCr
Hardness
58–62 HRC (case-hardened)
Tolerance
Bore: ±0.005 mm; Taper: ±0.005 mm; Concentricity: ≤0.008 mm
Surface finish
Ra 0.4 µm on bore, Ra 0.8 µm on taper
Machining process
CNC turning, internal grinding, wire-cut slotting
Heat treatment
Carburizing or induction hardening, then tempering
Inspection
100% dimensional check, 100% concentricity test
Batch size
1 to 10,000 pieces
Lead time
7 days (prototype), 12 days (production batch)
Certification
Material certificate, heat treatment report, inspection report
We do not use substandard blanks. Each collet starts from a certified bar, machined on our own CNC lathes and ground on internal grinders. Slotting is done with wire EDM for clean, burr-free edges.
Three reasons buyers send us their drawings
1. Batch-traceable quality.
Every batch gets a unique lot number. We record material heat number, machine operator, and inspection results. If you have a problem on your line, we can trace it back to the exact day and shift. That is not common for collet suppliers.
2. Inspection report per batch.
You do not have to trust us. We send you a PDF with actual measured values: bore diameter, taper angle, concentricity, hardness. You can verify every number with your own gauge. If something is out, we replace it at no cost.
3. One factory for CNC + stamping + springs + heat sinks.
We are not a trading company. Under one roof, we run CNC machining, metal stamping, spring coiling, and heat sink fabrication. If your collet is part of a larger assembly—say, a spring-loaded chuck or a stamped housing—we make all of it. Fewer vendors, faster lead times, one responsible party.
Where these parts are used
A Type 15 collet with a small round bar bore is a workhorse in high-volume turning. Typical applications:
Auto lathes (cam-operated): Feeding 1–8 mm round bar for screws, pins, and bushings.
Swiss-type CNC lathes: Holding 3–15 mm bar stock for medical screws, dental implants, and watch parts.
Pneumatic collet chucks: Secondary operations on pre-machined round parts, where quick changeover matters.
Hydraulic chucks: For high-speed spindle applications that need repeatable clamping force.
Buyers in automotive, medical device, and electronics assembly use these collets because they hold round bar with zero marring and less than 0.01 mm runout. That means longer tool life and fewer rejected parts downstream.
Q: Is there a minimum order quantity?
A: No. We make one piece for prototypes and full batches for production. Same tolerance, same inspection. No MOQ is our standard policy for custom CNC collet chucks.
Q: What tolerance can you hold on the bore and taper?
A: ±0.005 mm on both. Concentricity between bore and taper is ≤0.008 mm. We verify every piece with an air gauge and a taper tester, not just a sample.
Q: What is your lead time for a custom collet?
A: 7 days for prototypes after drawing approval. Production batches of 100–1,000 pieces ship in 10–12 days. If you need faster, we can split the batch and ship partial quantities.
Q: Do you provide material certificates and heat treatment reports?
A: Yes. Every batch includes a material certificate (with heat number) and a heat treatment report showing hardness and case depth. These are included free of charge.
Send your drawing
We are a precision manufacturing factory made in China, and we have been doing this since 2005. No MOQ, no minimum order value. You send the drawing; we send a firm quote in 12 hours.
Email: sc@bquq.com
WhatsApp: +86 13713157787
Attach your PDF or STEP file. Include your target quantity and required material. We will reply with price, lead time, and our inspection plan. If your drawing is incomplete, we will tell you exactly what is missing. No guesswork.
