OpeningThis is a 46 Type round bore extended collet chuck, machined to your exact drawing. We verify every dimension before shipment. No surprises.At a glance: Concentricity within 0.005 mm TIR. Lead
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- sc@bquq.com
OpeningThis is a 46 Type round bore extended collet chuck, machined to your exact drawing. We verify every dimension before shipment. No surprises.At a glance: Concentricity within 0.005 mm TIR. Lead
This is a 46 Type round bore extended collet chuck, machined to your exact drawing. We verify every dimension before shipment. No surprises.
At a glance: Concentricity within 0.005 mm TIR. Lead time 15-20 working days after drawing approval. No MOQ—order one or one thousand. Material certs included with every batch.
You send the print. We machine the part. You get a collet chuck that holds tight and runs true.
| Parameter | Value |
|---|---|
| Material options | 42CrMo (AISI 4140), 20CrMnTi (case-hardening), SUS440C, or your specified alloy |
| Hardness | 58-62 HRC (case-hardened), 40-45 HRC (through-hardened) |
| Concentricity (TIR) | ≤ 0.005 mm |
| Bore diameter range | 10 mm to 46 mm (round bore, extended nose) |
| Surface finish | Ra 0.4 µm on bore and taper, Ra 1.6 µm elsewhere |
| Taper angle | 16° or 20° per your drawing, ground to ±0.002 mm |
| Machines used | 5-axis CNC lathes, CNC cylindrical grinders, jig grinders |
| Inspection | CMM full report, air gauge for bore, hardness tester |
| Batch size | 1 to 10,000 pcs |
| Lead time | 15-20 working days (sample), 25-30 days (production) |
| Marking | Laser engraved part number, batch code, date code |
Every chuck is ground after heat treatment. We do not skip stress relieving. The taper is matched to your spindle nose, not a generic fit.
1. Batch-traceable quality. Each heat lot gets a unique code. You can trace the steel back to the mill. We keep records for 10 years. If a problem shows up in your line, we find the root cause in hours, not weeks.
2. Inspection report per batch. You get a full dimensional report with every shipment. That includes CMM data, surface roughness readings, and hardness values. No extra charge. No PDF summary—actual numbers you can audit.
3. One factory for CNC, stamping, springs, and heat sinks. You are not just buying a collet chuck. You are buying a partner who can also make the spring collet inside it, the stamped retainer ring, and the heat sink for your spindle motor. One purchase order, one quality system, one shipping point. Fewer suppliers means fewer headaches.
This extended round bore collet chuck is built for automatic lathes and Swiss-type machines. Common applications:
If you machine round parts on an auto lathe, this chuck is the interface between your spindle and your workpiece. Get it right, and everything downstream gets easier.
Looking for a different part? We also machine Custom CNC Auto Lathe 52 Type Round Bore Spring Collet Chuck | BQUQ in the same Dongguan factory.
Q: What is your MOQ? A: No MOQ. We make one prototype for your approval, then scale to your volume. Many of our collet chuck orders are 5-20 pieces for a machine shop's own use.
Q: How do you guarantee 0.005 mm concentricity? A: We grind the bore and taper in one setup on a jig grinder. Then we check every piece on a CMM with a 0.001 mm resolution probe. The inspection report is included in the shipment.
Q: What is your typical lead time? A: 15-20 working days for a sample, 25-30 days for production runs. If you need it faster, tell us—we can often compress the schedule for an extra fee.
Q: Do you provide material certificates? A: Yes. Every batch comes with a mill test certificate and our own heat treatment report. If you need third-party testing (SGS, BV), we arrange it at cost.
Get a firm quote within 12 hours. Send your drawing and specify material, hardness, and quantity. We will confirm machining feasibility and delivery date.
Email: sc@bquq.com WhatsApp: +86 13713157787
Precision manufacturing, made in China, with no MOQ and no excuses. Your drawing is the starting point. We do the rest.
| 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 |
