We machine these large-series collets to your exact drawing. No stock adjustments. No guesswork. Every unit is verified for concentricity and taper angle before shipme
We machine these large-series collets to your exact drawing. No stock adjustments. No guesswork. Every unit is verified for concentricity and taper angle before shipment.Tolerance: 0.005
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Send us your drawing / quantity / material — reply within 24h.
If you are holding a 42, 45, 46, or 48 mm collet chuck, send us the print. We build the collet set to match your machine spindle and workholding system.
| Specifications | |
|---|---|
| Parameter | Value |
| Available sizes | 42 mm, 45 mm, 46 mm, 48 mm (large series) |
| Material options | 20CrMnTi, 8620, 9Cr18, 40CrMo |
| Hardness | 58–62 HRC (case-hardened) |
| Bore tolerance | ±0.005 mm |
| Taper angle tolerance | ±0.005 mm on major diameter |
| Concentricity (TIR) | ≤0.01 mm at nose |
| Surface finish | Ra 0.4 μm on bore, Ra 0.8 μm on body |
| Heat treatment | Carburizing + quenching + tempering |
| Process | CNC turning, CNC grinding, wire EDM (for slots) |
| Batch size | 1–5000 pcs, no MOQ |
| Inspection | 100% dimensional check, CMM report per batch |
| Lead time | 7 days (prototype), 12 days (production) |
We use CNC grinding for the taper and bore. This gives repeatable geometry across the whole set. Slots are cut by wire EDM, so the spring segments flex evenly under clamping load.
2. Inspection report per batch. You get a CMM report with every shipment. It lists bore diameter, taper angle, TIR, and hardness for each collet. No averages. No "representative sample." Every part is measured.
3. One factory for CNC + stamping + springs + heat sinks. We run four production lines under one roof. Your collet chuck order can be combined with spring collets, stamping fixtures, or heat sink components. Fewer suppliers, one quality system, one shipping point. This cuts your logistics cost and inspection time.
The 46 mm and 48 mm sizes are often used on multi-spindle automatics (e.g., Tornos, Esco, Index). The 42 mm and 45 mm sizes fit single-spindle CNC lathes with a through-hole capacity of 42–45 mm.
Q: How do you guarantee tolerance and quality? We grind the taper and bore in the same setup. This eliminates indexing error. Then we check every collet on a CMM with a calibrated master mandrel. The inspection report is included in the shipment.
Q: What is your lead time for a custom collet set? Prototype (1–5 pcs): 7 working days. Production (50+ pcs): 12 working days. If you need faster, we can split the order—ship the first batch in 5 days, the rest in 10.
Q: Can you provide material certificates? Yes. We supply mill certificates for the raw material and heat-treatment reports. For aerospace or medical orders, we can add full traceability documentation at no extra cost.
Email: sc@bquq.com WhatsApp: +86 13713157787
We are precision manufacturing engineers, not sales clerks. You get straight answers about tolerances, materials, and lead times. No MOQ, no hidden fees, no surprises. Send the drawing today.
Looking for a different part? We also machine Custom CNC Collet Chuck 46 Type Quenched Dark | BQUQ Precision Manufacturing in the same Dongguan factory.
| 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 |
