OpeningYour 630 type collet is machined to your drawing, not a stock approximation. We verify every critical dimension before shipment.Tolerance: 0.005 mm on bore and taperLead ti
Custom CNC Collet Chuck 630 Type Auto Lathe Parts Made in China
OpeningYour 630 type collet is machined to your drawing, not a stock approximation. We verify every critical dimension before shipment.Tolerance: ±0.005 mm on bore and taperLead time: 7–12 days for pr
Get a Fast Quote for This Part
Send us your drawing / quantity / material — reply within 24h.
Your 630 type collet is machined to your drawing, not a stock approximation. We verify every critical dimension before shipment.
Tolerance: ±0.005 mm on bore and taper
Lead time: 7–12 days for prototypes, 15–20 days for production
No MOQ—order one piece or ten thousand
Material: 20CrMnTi, 65Mn, or 40CrMo, case-hardened to 58–62 HRC
This is a custom CNC collet chuck for auto lathes running round bar stock. It grips 3 mm to 42 mm bar diameters, depending on your drawbar pull and spindle nose configuration. We make the body, the slots, and the taper to your print.
Specifications
Parameter
Value
Material options
20CrMnTi, 65Mn, 40CrMo, 9CrSi
Hardness
58–62 HRC (case-hardened) or 45–50 HRC (through-hardened)
Tolerance
±0.005 mm on bore, ±0.01 mm on outer diameter, ±0.02 mm on slot width
Surface finish
Ra 0.4 µm on gripping bore, Ra 0.8 µm elsewhere
Machining process
CNC turning, CNC milling, wire EDM for slots, centerless grinding for OD
Heat treatment
Carburizing or induction hardening, then tempering
Inspection
100% dimensional check, 5% CMM full report per batch
Batch size
1 to 50,000 pieces
Lead time
7 days for 1–10 pieces, 12 days for 11–100, 20 days for larger runs
Country of origin
Made in China, Dongguan factory
We run these on 5-axis CNC lathes and machining centers. For slot cutting, we use wire EDM to hold ±0.005 mm slot width without burrs. After heat treatment, we grind the bore and taper on a CNC internal grinder. Every collet is tested for concentricity under 0.008 mm TIR at the gripping zone.
Three reasons buyers send us their drawings
1. Batch-traceable quality.
Each heat number and batch is recorded. If you need to trace a part back to its raw material lot, we can do it in minutes. We keep records for five years.
2. Inspection report per batch.
You get a dimensional report with every shipment. It lists bore diameter, taper angle, slot width, hardness, and surface roughness. No extra charge. If you need a full CMM report with 20+ points, we do that too.
3. One factory for CNC + stamping + springs + heatsinks.
Your collet chuck might need a spring collet, a stamped retainer, or a heatsink for the spindle motor. We make all of them under one roof. That means fewer suppliers, less shipping, and one person to hold accountable.
Where these parts are used
A 630 type collet is a workholding component for automatic lathes—Swiss-type and fixed-headstock CNC lathes. It grips round bar stock while the spindle rotates. Common applications:
Precision shafts for electric motors, 6–20 mm diameter, runout under 0.01 mm
Fastener blanks—screws, bolts, and pins produced at 30–60 pieces per minute
Medical device components—small stainless steel parts like bone screws and drill guides, where surface finish and repeatability are critical
Automotive fuel injector parts—nozzle bodies and needles, requiring concentricity under 0.005 mm
Electronic connector pins—brass or beryllium copper, high volume, tight tolerances
In each case, the collet’s bore and taper must match your spindle nose exactly. A worn or off-spec collet causes bar pushback, vibration, and scrap. We machine to your drawing, so you get the grip force and repeatability your process needs.
Q: Do you have a minimum order quantity?
A: No MOQ. We accept one-piece orders for prototypes or replacement parts. Production runs of 1,000+ get a volume discount, but the unit price is the same for 10 pieces.
Q: How do you control tolerance and quality?
A: We use CNC machines with in-process probing. After machining, we check every collet for bore and taper with air gauges. A sample from each batch goes to the CMM for a full 3D report. You get that report with the shipment.
Q: What is your lead time?
A: Prototypes (1–10 pieces) ship in 7 days. Production orders (100–1,000) ship in 15–20 days. If you need faster, we can split the batch and air-ship the first 50 pieces.
Q: Can you provide material certificates?
A: Yes. We supply mill certificates for raw material, heat treatment reports, and hardness test results. All documents are in English and sent with the invoice.
Send your drawing
Send us your 630 type collet drawing—PDF, STEP, or even a hand sketch with dimensions. We will review it and give you a firm quote within 12 hours.
Email: sc@bquq.com
WhatsApp: +86 13713157787
No MOQ, no minimum order value. Just precision manufacturing, made in China, verified before shipment.
