OpeningYour drawing defines the part. Our machines do the rest.We machine the Auto Lathe 34 Type Round Bore Spring Collet Chuck to your exact dimensions. Every unit is verified for concentricity and b
Your drawing defines the part. Our machines do the rest.
We machine the Auto Lathe 34 Type Round Bore Spring Collet Chuck to your exact dimensions. Every unit is verified for concentricity and bore tolerance before shipment. No guesswork, no rejects on your spindle.
| Parameter | Value |
|---|---|
| Material options | 65Mn spring steel, 60Si2MnA, 9Cr18MoV stainless, or per your spec |
| Hardness | 42-48 HRC (working zone), 50-55 HRC (spring fingers) |
| Surface finish | Ra 0.4 µm on bore, Ra 0.8 µm on OD |
| Concentricity | ≤ 0.005 mm TIR |
| Bore tolerance | ± 0.01 mm |
| Keyway/slot width tolerance | ± 0.02 mm |
| Heat treatment | Oil quenched + tempered, controlled atmosphere |
| Machining process | CNC turning, CNC milling, wire EDM for slots |
| Inspection | 100% dimensional check, CMM report per batch |
| Batch traceability | Heat number + batch code laser marked on each chuck |
| Lead time | 15-20 working days (samples 10-12 days) |
| MOQ | No MOQ |
We use wire EDM for the spring slots. This gives clean, burr-free edges and consistent finger flexibility. The bore is ground after heat treatment to hold the ± 0.01 mm tolerance.
1. Batch-traceable quality Every batch gets a unique code. We record material heat number, machine operator, and inspection results. If a problem appears in your assembly line, we trace it back to the exact batch and shift. You get a written record, not excuses.
2. Inspection report per batch You receive a full dimensional report with each shipment. This includes bore diameter, concentricity, hardness, and surface finish readings. Our QC team uses calibrated CMM and hardness testers. Reports are signed and dated. No hidden deviations.
3. One factory for CNC + stamping + springs + heat sinks We run four production lines under one roof. Your collet chuck is not a one-off job. If your project also needs a stamped retainer plate, a custom spring, or a heat sink for the drive unit, we make it all. One purchase order, one quality standard, one shipping point. Less coordination, fewer delays.
The Auto Lathe 34 Type Round Bore Spring Collet Chuck is a workholding component for automatic lathes and Swiss-type machines. It grips round bar stock or pre-machined parts during turning, drilling, and threading operations.
The round bore design suits cylindrical stock from 3 mm to 34 mm. The spring fingers collapse evenly to grip the part without marring the surface. This makes it suitable for finished or semi-finished parts where surface quality matters.
Looking for a different part? We also machine Custom CNC Auto Lathe 52 Type Round Bore Spring Collet Chuck | BQUQ in the same Dongguan factory.
Q: What is your MOQ? A: No MOQ. We accept single-piece orders for samples or urgent replacements. Production runs of 500+ pieces get a small price break, but we never force you to buy more than you need.
Q: How do you guarantee tolerance and concentricity? A: We grind the bore after heat treatment. Then we measure every piece on a CMM. Concentricity is held to 0.005 mm TIR or better. The inspection report with actual readings ships with your order.
Q: What is your lead time? A: Standard lead time is 15-20 working days after drawing approval. Sample orders take 10-12 days. If you need faster, we can discuss an expedited schedule for a small surcharge.
Q: Can you provide material certificates? A: Yes. We supply mill certificates for the raw material and our own heat treatment records. All materials are sourced from certified mills. We can also provide RoHS and REACH compliance documents upon request.
Email your 2D drawing or 3D model to sc@bquq.com. Include material, hardness, and quantity if you know them. If not, we will recommend based on your application.
We reply with a firm quote within 12 hours. No vague estimates. You get unit price, tooling cost (if any), and confirmed lead time.
Prefer chat? WhatsApp +86 13713157787. We have engineers on staff, not just salespeople. Ask us about the 34 Type collet geometry or spring finger design.
Precision manufacturing, made in China, no MOQ. Send your drawing today.
| 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 |
