OpeningYour drawing. Our machines. A collet chuck that holds true.We machine ER collet chucks and hex-bore toolholders to your exact print. Every unit is verified before shipment—runout, hardness, bor
Your drawing. Our machines. A collet chuck that holds true.
We machine ER collet chucks and hex-bore toolholders to your exact print. Every unit is verified before shipment—runout, hardness, bore geometry. No surprises at your spindle.
This is precision manufacturing for people who measure twice. If you need a custom CNC collet chuck that holds tight at 20,000 RPM, you are in the right place.
| Parameter | Value |
|---|---|
| Material | 20CrMnTi, 42CrMo, 9Cr18, or per drawing |
| Hardness | 58–62 HRC (case-hardened), core 30–35 HRC |
| Machining | 5-axis CNC turning, ID/OD grinding, wire EDM for hex bore |
| Tolerance | ±0.005 mm on bore Ø, ±0.01 mm on external taper |
| Runout | ≤0.005 mm TIR (collet seat to taper) |
| Surface finish | Ra 0.4 µm on taper, Ra 0.8 µm on bore |
| Coating | Optional TiN, TiAlN, or black oxide |
| Inspection | 100% dimensional check, CMM report included |
| Batch size | 1–5,000 pcs, no MOQ |
| Lead time | 7 days (1–50 pcs), 12 days (larger runs) |
We grind the taper in-house on a Studer S41. Hex bores are wire-cut to ±0.005 mm, then honed. Every chuck is balanced to G2.5 at 20,000 RPM unless your print says otherwise.
1. Batch-traceable quality. Each heat number and batch is logged. If a problem shows up on your line, we can trace it to the exact bar stock and shift. No guesswork.
2. Inspection report per batch. You get a CMM report, hardness certificate, and surface finish readings with every shipment. Not a generic PDF—actual numbers from your parts.
3. One factory for CNC + stamping + springs + heat sinks. Your collet chuck is not the only thing we make. We also run stamping presses, spring coiling machines, and a dedicated heat sink line. Send us a multi-part assembly, and we quote it as one package. Fewer suppliers, fewer headaches.
Custom CNC collet chucks from our shop hold workpieces in:
If your part spins, stops, or needs to be held within microns, this is the tool that does it.
Looking for a different part? We also machine Custom CNC Machined ER16 Spring Collet Chuck | Precision Manufacturing in the same Dongguan factory.
Q: Do you really have no MOQ? A: Yes. We machine one prototype for you to test, then scale to 5,000 pieces. The first article is priced slightly higher per unit, but tooling and setup are the same. No minimum contract.
Q: What tolerance can you hold on the hex bore? A: ±0.005 mm on the across-flats dimension. For ER collets, we match the taper angle to your existing nut and seat within 0.002 mm. Runout is verified on a test arbor before shipping.
Q: What is your standard lead time? A: 7 days for up to 50 pieces. 12 days for larger runs. If you need faster, we can split the batch and air-ship the first 10 pieces in 72 hours—additional freight cost only.
Q: Do you provide material certificates? A: Yes. Every batch includes a mill certificate for the raw material, plus our own hardness and chemical composition report. For aerospace or medical, we add full traceability documentation at no extra charge.
Get a firm quote in 12 hours.
Email your PDF or STEP file to sc@bquq.com. Or message us on WhatsApp at +86 13713157787.
We reply with pricing, lead time, and a technical review of your print—pointing out any tolerance that might be over-specified or any feature that could save you money.
Custom CNC collet chuck, made in China, with no MOQ and real inspection data. Send the drawing. We will make it right.
| 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 |
