OpeningYour drawing defines the part. We build it. Every custom CNC collet chuck is machined to your exact geometry, then verified on our own CMM before shipment. We do not ship unmeasured parts.Toler
Your drawing defines the part. We build it. Every custom CNC collet chuck is machined to your exact geometry, then verified on our own CMM before shipment. We do not ship unmeasured parts.
This is a 36-type auto lathe collet chuck. It fits standard 36 mm spindle bores. We machine the taper, the slots, and the thread to your spec. We polish the gripping surface to mirror finish so your bar stock does not mark.
| Parameter | Value |
|---|---|
| Material options | 20CrMnTi, 40Cr, 9Cr18, SUS440C, S136 |
| Hardness | 58–62 HRC (case-hardened) or 48–52 HRC (through-hardened) |
| Machining process | CNC turning, CNC milling, wire EDM for slots |
| Taper accuracy | AT3 or better per ISO 1947 |
| Concentricity | ≤ 0.005 mm TIR |
| Surface finish | Ra 0.2 µm on gripping surface, Ra 0.4 µm elsewhere |
| Slot width tolerance | ±0.01 mm |
| Thread class | 6H internal, 6g external |
| Heat treatment | Vacuum hardening + deep cryogenic treatment optional |
| Inspection | 100% dimensional check, CMM report per batch |
| Batch size | 1 to 10,000 pieces |
| Lead time | 7 days for samples, 15 days for production |
We use CNC lathes with live tooling for the body. Wire EDM cuts the slots without burr. Then we lap the taper and polish the bore. Every chuck gets a serial number. You can trace it back to the heat treatment batch.
1. Batch-traceable quality. Each heat treatment lot is numbered. Each machining batch gets its own inspection record. If a problem appears in your production, we can pull the exact process data for that serial number. No guesswork.
2. Inspection report per batch. You receive a dimensional report with every shipment. It lists all critical features: taper angle, concentricity, slot width, hardness. Our QC signs it. If you need third-party inspection, we arrange it at cost.
3. One factory for CNC + stamping + springs + heat sinks. You send us one drawing package. We handle the collet chuck, the spring collet, the stamped washer, and the heat sink for your spindle drive. One purchase order, one logistics point, one quality system. This is precision manufacturing done the way engineers want it – no middlemen.
If you run a 36-type spindle, this chuck replaces your worn or non-concentric unit. We can match existing dimensions or design a new profile from your part drawing.
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: What is your MOQ? No MOQ. We machine one piece for sample validation. Production runs start at 50 pieces. You pay the same unit price from piece 1 to piece 10,000.
Q: How do you guarantee tolerance and quality? We use a calibrated CMM for final inspection. Every critical dimension is measured and recorded. The report is included in the shipment. If any dimension is out of spec, we rework or replace at no cost.
Q: What is your lead time? Standard lead time is 7 working days for samples, 15 working days for production. For urgent orders, we can expedite to 5 days for samples at a 10% surcharge.
Q: Do you provide material certificates? Yes. Every batch includes a mill certificate for the raw material. If you need heat treatment certificates, hardness test reports, or RoHS/REACH declarations, we provide them with the shipment.
Email your 2D or 3D file to sc@bquq.com. Include your target quantity and required hardness. We reply with a firm quote within 12 hours. For urgent questions, WhatsApp us at +86 13713157787.
We are a 20-year-old factory in Dongguan, China. We make custom CNC collet chucks, springs, stampings, and heat sinks under one roof. Send the drawing. Get the quote. Receive the part.
| 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 |
