OpeningYour drawing defines the part. We machine it. Every collet chuck is made to your exact dimensions, not from stock approximations. Before shipment, each unit is checked on a
Custom CNC Collet Chuck Sets ER11 to ER40 Precision Made in China
OpeningYour drawing defines the part. We machine it. Every collet chuck is made to your exact dimensions, not from stock approximations. Before shipment, each unit is checked on a CMM and a runout tes
Get a Fast Quote for This Part
Send us your drawing / quantity / material — reply within 24h.
Your drawing defines the part. We machine it. Every collet chuck is made to your exact dimensions, not from stock approximations. Before shipment, each unit is checked on a CMM and a runout tester. You get a part that fits your spindle, not a part that almost fits.
Tolerance: ±0.005 mm on critical diameters
Runout: ≤0.008 mm TIR at nose
Material: 20CrMnTi or 8620 steel, case-hardened to 58–62 HRC
Lead time: 15–20 days for standard sets, 10 days for prototypes
No MOQ: order 1 piece or 1,000 pieces
We are a precision manufacturing factory in Dongguan, China, with 20 years of experience in CNC machining. You send the drawing. We handle the rest.
Specifications
Parameter
Value
Notes
Available sizes
ER11, ER16, ER20, ER25, ER32, ER40
Full range or mixed sets
Material
20CrMnTi, 8620, 4140, or per drawing
Case-hardened or through-hardened
Hardness
58–62 HRC
Case depth 0.8–1.2 mm
Tolerance
±0.005 mm on bore and taper
Measured at 20°C
Runout
≤0.008 mm TIR at nose
Verified on each piece
Surface finish
Ra 0.4 μm on taper, Ra 0.8 μm elsewhere
Ground after heat treatment
Thread type
Metric or inch, per drawing
M8 to M16 for drawbar
Machining process
CNC turning, grinding, wire EDM for slots
4-axis and 5-axis available
Heat treatment
Carburizing or induction hardening
In-house or certified vendor
Inspection
CMM report, runout report, hardness test
Per batch, included
Batch size
1 to 10,000
No MOQ, any quantity
Lead time
15–20 days for production, 10 days for samples
Faster for urgent orders
Country of origin
Made in China
Dongguan factory
Three reasons buyers send us their drawings
1. Batch-traceable quality.
Every batch gets a unique heat number. We record material certificates, heat treatment curves, and final inspection data. If a problem appears in your assembly line, we trace it to the exact batch and date. No guesswork.
2. Inspection report per batch.
You do not have to trust us. We send a PDF with CMM coordinates, runout measurements, and hardness values for each batch. For critical orders, we include photos of the measurement setup. Your QC team can verify without visiting the factory.
3. One factory for CNC + stamping + springs + heat sinks.
Your collet chuck is not the only part you need. We also run metal stamping lines, spring coiling machines, and heat sink fabrication. Send us a full assembly drawing. We quote the entire BOM in one email. Fewer suppliers, fewer logistics headaches, lower total cost.
Where these parts are used
Custom CNC collet chucks from our factory go into real production environments. We see them in:
CNC lathes and turning centers – holding bar stock for high-speed machining. ER25 and ER32 are common for Swiss-type lathes.
Milling machines and machining centers – ER16 and ER20 collet chucks for end mills and drills. Runout below 0.008 mm keeps tool life predictable.
Automotive component lines – ER40 chucks for valve stems, camshaft blanks, and transmission shafts. Batch traceability matters for PPAP submissions.
Medical device manufacturing – small ER11 chucks for titanium and stainless steel parts. Surface finish and cleanliness are critical.
Aerospace subcontractors – ER32 chucks for aluminum and Inconel parts. Hardness and concentricity are verified on every unit.
Die and mold shops – ER20 and ER25 chucks for graphite electrodes and hardened steel cutters.
If you machine round parts, you likely need a collet chuck. We make them to your drawing, not to a generic catalog spec.
Q: What is your minimum order quantity?
A: No MOQ. We accept single-piece orders for prototypes and small runs. The price per piece is higher for small quantities, but the tooling cost is zero. You pay only for the parts.
Q: How do you control tolerance and runout?
A: We machine to ±0.005 mm on critical diameters. After heat treatment, we grind the taper and bore. Each piece is measured on a CMM and a runout tester. The inspection report is included with the shipment.
Q: What is the lead time for a custom set?
A: Standard sets (ER11 to ER40) ship in 15–20 days. Prototypes and urgent orders can be done in 10 days. If you need faster, tell us your deadline. We will adjust the production schedule.
Q: Can you provide material certificates?
A: Yes. We provide mill certificates for raw material, heat treatment reports, and hardness test results. For aerospace or medical orders, we can provide full traceability documentation.
Send your drawing
We quote within 12 hours. Send your PDF or STEP file. Include tolerances, material grade, and quantity. We reply with a firm price and lead time. No obligation, no hidden fees.
Email: sc@bquq.com
WhatsApp: +86 13713157787
Precision manufacturing, made in China, with no MOQ and verified quality. Your drawing is the starting point. Let us show you what we can do.
