OpeningWe machine this 36 Type triangle bore spring collet to your exact drawing. Not from stock. Not from a catalog. We cut, heat treat, grind, and verify each unit before shipment. You get a collet
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- sc@bquq.com
OpeningWe machine this 36 Type triangle bore spring collet to your exact drawing. Not from stock. Not from a catalog. We cut, heat treat, grind, and verify each unit before shipment. You get a collet
We machine this 36 Type triangle bore spring collet to your exact drawing. Not from stock. Not from a catalog. We cut, heat treat, grind, and verify each unit before shipment. You get a collet that holds your workpiece true, runout within 0.005 mm, and repeatable across the batch.
At a glance: Tolerance ±0.005 mm on bore and taper, surface finish Ra 0.4, lead time 7–12 working days, no MOQ, material certs included. This is a custom CNC collet chuck, made in China, built for production duty on Swiss-type and automatic lathes.
| Parameter | Value |
|---|---|
| Material options | 65Mn spring steel, 60Si2MnA, 9SiCr, or per your drawing |
| Hardness | HRC 45–52 (spring temper), HRC 58–62 (wear-resistant option) |
| Bore shape | Triangle (3-point), 36 Type taper per DIN 6343 or your spec |
| Tolerance | ±0.005 mm on bore, ±0.01 mm on outer taper |
| Surface finish | Ra 0.4 on bore and taper, Ra 1.6 elsewhere |
| Runout (TIR) | ≤0.005 mm at nose, ≤0.01 mm at 50 mm from nose |
| Process | CNC turning, heat treatment, centerless grinding, slot EDM |
| Inspection | 100% dimensional check, batch hardness test, runout report |
| Batch size | 1 piece to 10,000 pieces, no MOQ |
| Lead time | 7 working days for prototypes, 12 working days for production |
| Packaging | Anti-rust oil, individual foam slot, export carton |
1. Batch-traceable quality. Every batch gets a unique heat number. We record material incoming, heat treatment furnace log, and final grind dimensions. If a problem shows up on your line, we trace it to the exact melt and process step. No guesswork.
2. Inspection report per batch. You do not have to ask. Each shipment includes a dimensional report, hardness certificate, and runout measurement for sampled units. For critical orders, we add a full CMM report. Our QC team signs off before the parts leave the factory.
3. One factory for CNC + stamping + springs + heat sinks. Your collet chuck is not an island. If your assembly needs a spring, a stamped retainer, or a heat sink for the spindle drive, we make them under the same roof. One purchase order, one quality system, one shipping date. Fewer suppliers, fewer delays, fewer excuses.
The 36 Type triangle bore collet is standard on automatic lathes and Swiss-type machines that feed round, hex, or square bar stock. The triangular bore collapses evenly on three points, which grips hex and square stock without marking the corners. Typical applications:
If your drawing calls for a special bore shape, a different taper angle, or a longer nose, we adjust the tooling. We have cut collets for 0.8 mm pin stock and for 32 mm hex bars in the same week.
Looking for a different part? We also machine Custom CNC Machined Auto Lathe Collet Set 34 36 38 40 Series | BQUQ in the same Dongguan factory.
Q: What is your MOQ? A: No MOQ. We make one piece for a prototype or ten thousand for production. The unit price drops with quantity, but the quality standard stays the same.
Q: How do you control tolerance and runout? A: We grind the bore and taper on a CNC centerless grinder after heat treatment. Each collet is checked with a calibrated gauge pin and a dial indicator on a test arbor. Runout is ≤0.005 mm at the nose. We send the report with the shipment.
Q: What is your lead time? A: Prototypes ship in 7 working days. Production runs of 100–500 pieces ship in 12 working days. Larger orders are scheduled by agreement, but we keep a buffer for urgent requests.
Q: Do you provide material certificates? A: Yes. Every batch includes a mill certificate for the raw material and a hardness report from our heat treatment furnace. If you need a full traceability package, we add it at no extra cost.
Email your PDF or STEP file to sc@bquq.com. Include the material, hardness, and quantity if you know them. If you do not, we will recommend a grade based on your bar stock and spindle speed.
You get a firm quote within 12 hours. Not a ballpark. A fixed price with tolerance, lead time, and shipping terms.
For urgent inquiries, message us on WhatsApp: +86 13713157787.
Precision manufacturing is our only business. We have run CNC lines, stamping presses, spring coiling machines, and heat sink production for 20 years in Dongguan. Send the drawing. We will make the collet.
| 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 |
