OpeningYou send the drawing. We machine the part. Every ER11 spring collet chuck is verified before shipment.We are BQUQ, a factory in Dongguan, China. 20 years of precision manufacturing. Our CNC lin
You send the drawing. We machine the part. Every ER11 spring collet chuck is verified before shipment.
We are BQUQ, a factory in Dongguan, China. 20 years of precision manufacturing. Our CNC lines run 24/7. We make collet chucks that hold drill bits true, run concentric, and survive production shifts.
This is not a stock item. It is made to your drawing. You control the shank diameter, the taper angle, the thread pitch, and the surface finish. We execute.
| Parameter | Value |
|---|---|
| Material | 20CrMnTi (case-hardened), 9Cr18 (stainless), or 40CrMo (alloy steel) |
| Hardness | 58–62 HRC case depth 0.5–0.8 mm (carburized) |
| Machining process | CNC turning, CNC milling, centerless grinding, wire EDM (for slots) |
| Concentricity (TIR) | ≤ 0.005 mm at nose, ≤ 0.008 mm at 20 mm from nose |
| Surface finish | Ra 0.4 µm on taper, Ra 0.8 µm on OD, black oxide or TiN coating optional |
| Thread accuracy | Class 6H internal, 6g external (per ISO 965) |
| Slots | 3-slot or 4-slot design, EDM wire cut, no burrs |
| Batch size | 1 to 50,000 pieces |
| Inspection | 100% dimensional check on critical features, CMM report per batch |
| Lead time | 7 days for 1–50 pcs, 12 days for 51–500 pcs, 20 days for larger runs |
| Packaging | Anti-rust oil, individual foam slot, export carton |
All collet chucks are made on DMG Mori and Mazak 5-axis machines. Grinding is done on Studer cylindrical grinders. We do not outsource. One factory, one quality standard.
1. Batch-traceable quality. Every heat number is recorded. Every batch gets a unique serial range. If a part fails in your spindle, we trace it back to the raw material lot and the operator. You get a full traceability sheet with the shipment.
2. Inspection report per batch. We do not ship blind. Each batch includes a CMM report with actual measured values for taper angle, runout, thread pitch, and hardness. Not a generic certificate—real numbers from our Zeiss CMM. You can verify before you pay.
3. One factory for CNC + stamping + spring + heatsink. Your collet chuck is often part of a larger assembly. We also run metal stamping presses (25–250 tons), spring coiling machines, and CNC heat sink lines. Send us the whole BOM. We quote the chuck, the retaining spring, the stamped washer, and the heatsink plate in one email. One shipping point, one invoice, one accountable supplier.
Custom CNC collet chucks with ER11 tapers are not limited to drill bits. Our customers use them in:
In every case, the chuck is the last mechanical link between the spindle and the cutting edge. If it runs out, the hole runs out. That is why we grind the taper after heat treatment, not before.
Looking for a different part? We also machine Custom CNC Machined ER20 Spring Collet Chuck Precision Tooling No MOQ in the same Dongguan factory.
Q: What is your MOQ? A: No MOQ. We make one piece for prototype validation. Production pricing starts at 50 pieces. Tooling cost is zero for standard ER11 profiles. For custom shanks, we charge a one-time setup fee of $80–150, waived on orders over 200 pieces.
Q: How do you guarantee tolerance and quality? A: We use a Zeiss CMM for final inspection. Each part is measured for taper angle (within ±0.5 arcmin), runout (≤0.005 mm), and thread fit. We also do a 100% visual check for burrs on slot edges. The inspection report is shipped with the goods. If a part fails your incoming check, we replace it at no cost, including freight.
Q: What is your lead time? A: Standard lead time is 7 working days for up to 50 pieces. For 500 pieces, it is 12 days. If you need faster, we can split the batch and air-ship the first 10 pieces in 3 days. We do not quote lead times we cannot meet.
Q: Do you provide material certificates? A: Yes. We provide mill certificates for the raw material, heat treatment reports (hardness curve, case depth), and a RoHS/REACH declaration if required. Certificates are in English and stamped by our QC department.
Send us your 2D PDF or 3D STEP file. We reply with a firm quote in 12 hours. No vague estimates. You get unit price, tooling cost, lead time, and shipping options.
Email: sc@bquq.com WhatsApp: +86 13713157787
Precision manufacturing, made in China, no MOQ. Your drawing, our machines, verified parts.
| 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 |
