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
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.
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.
| 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 |
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.
Custom CNC collet chucks from our factory go into real production environments. We see them in:
If you machine round parts, you likely need a collet chuck. We make them to your drawing, not to a generic catalog spec.
Looking for a different part? We also machine Custom CNC Machined ER40 Spring Collet Chuck for End Mill Milling in the same Dongguan factory.
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.
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.
| 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 |
