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
Your 630 type collet is machined to your drawing, not a stock approximation. We verify every critical dimension before shipment.
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.
| 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.
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.
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:
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.
Looking for a different part? We also machine Custom CNC Collet Chuck 46 Type Triangle Bore Spring Collet | BQUQ in the same Dongguan factory.
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 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.
| 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 |
