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
Custom CNC Collet Chuck 46 Type Round Bore Extended, Made in China
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
Get a Fast Quote for This Part
Send us your drawing / quantity / material — reply within 24h.
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.
Specifications
Parameter
Value
Material options
42CrMo (AISI 4140), 20CrMnTi (case-hardening), SUS440C, or your specified alloy
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.
Three reasons buyers send us their drawings
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.
Where these parts are used
This extended round bore collet chuck is built for automatic lathes and Swiss-type machines. Common applications:
Bar feeder systems – the extended nose reaches deep into the guide bushing, reducing bar vibration and improving surface finish on long parts.
Secondary machining operations – holds pre-machined round blanks for drilling, milling, or slotting without marking the finished surface.
Hydraulic and pneumatic clamping fixtures – the round bore design accepts standard collet pads, so you can switch sizes without changing the chuck body.
High-speed spindle applications – the extended nose improves rigidity, allowing speeds up to 6,000 RPM with balanced versions.
Automotive fuel injector bodies – where concentricity of 0.005 mm is the difference between a good spray pattern and a rejected part.
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.
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.
Send your drawing
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.
