OpeningYour spindle deserves a tool holder that holds true. We machine BT30 ER collet chucks to your exact drawing, not from stock blanks. Every unit is verified before shipment. No surprises at your
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OpeningYour spindle deserves a tool holder that holds true. We machine BT30 ER collet chucks to your exact drawing, not from stock blanks. Every unit is verified before shipment. No surprises at your
Your spindle deserves a tool holder that holds true. We machine BT30 ER collet chucks to your exact drawing, not from stock blanks. Every unit is verified before shipment. No surprises at your incoming inspection.
At a glance: Runout within 0.005 mm TIR at the nose, taper angle AT3 or better, lead time 15-20 working days, no MOQ. One part or one thousand, same process control.
We run a dedicated CNC turning and grinding cell for collet chucks. The taper is ground, not turned. The thread is cut, not rolled. Here is what you get when you send us your print.
| Parameter | Value |
|---|---|
| Available tapers | BT30, BT40, BT50 (CAT/DIN on request) |
| Collet type | ER11, ER16, ER20, ER25, ER32, ER40 |
| Material | 20CrMnTi or 8620 steel, case-hardened to 58-62 HRC |
| Taper accuracy | AT3 per ISO 1947, ground finish Ra 0.2 µm |
| Runout (TIR) | ≤ 0.005 mm at nose, ≤ 0.010 mm at 4×D |
| Thread accuracy | 6H internal, ground after heat treat |
| Surface finish | Black oxide, electroless nickel, or TiN coating |
| Balancing | G2.5 at 15,000 rpm standard, G1.0 optional |
| Inspection | 100% dimensional check, CMM report per batch |
| Batch size | 1 to 5,000 pieces, no MOQ |
| Lead time | 15 days for prototypes, 20 days for production |
| Origin | Made in China, Dongguan factory |
The grinding wheel is dressed before every batch. The CMM is calibrated weekly. We do not skip steps to hit a price.
1. Batch-traceable quality. Each collet chuck gets a unique serial number. We record heat treat lot, grinding wheel ID, and operator initials. If a problem appears in your toolroom, we trace it to the exact heat treat batch and machining shift. You get a corrective action report, not excuses.
2. Inspection report per batch. You receive a full dimensional report with every shipment. Taper angle, runout, thread pitch, hardness — measured values, not nominal values. Our QC team uses a Zeiss CMM and a Taylor Hobson roundness tester. The report is signed and archived for 5 years.
3. One factory for CNC, stamping, springs, and heat sinks. Your tool holder is not our only line. We run CNC machining, metal stamping, spring coiling, and heat sink fabrication under one roof. That means one purchase order for a complete assembly. One logistics contact. One quality system. If your project needs a spring-loaded collet mechanism or a stamped retention knob, we make it in-house.
A BT30 ER collet chuck is not a shelf item. It is a working component in high-torque, high-speed machining. Here is where our customers use them.
If your spindle takes a BT30 taper, we can make the chuck. If it takes something else, ask. We have made odd tapers for special spindles before.
Looking for a different part? We also machine Custom CNC Machined HSK63A Collet Chuck with Drill Bit Tool Holder in the same Dongguan factory.
Q: What is your MOQ? A: No MOQ. We accept one piece for prototype validation. The setup cost is quoted separately for small batches, but the unit price drops significantly at 50 pieces and again at 200 pieces.
Q: How do you guarantee tolerance and quality? A: We grind the taper and bore on the same setup to minimize error. Every chuck is checked for runout at the nose and at 4×D. The CMM report is included in the shipment. If any dimension is out of spec, we replace the part at no cost.
Q: What is the lead time for a custom BT30 ER collet chuck? A: 15 working days for prototypes after drawing approval. Production batches of 100+ pieces take 20 working days. We can expedite to 10 days for an additional fee if your line is down.
Q: Do you provide material certificates and heat treat reports? A: Yes. We supply mill certificates for the raw steel, heat treat curves, and hardness test reports. All documents are in English and stamped by our QC manager.
Stop comparing generic catalogs. Send us your print and get a firm quote in 12 hours. We will confirm the taper, the collet size, and the runout spec before we quote. No hidden costs, no vague promises.
Email your drawing to sc@bquq.com or message us on WhatsApp at +86 13713157787. We reply within one business hour, Monday to Saturday. Precision manufacturing is our only business. Let us prove it with your part.
| 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 |
