OpeningYour drawing drives our process. We machine the 55 Type Round Bore Spring Collet Chuck to your exact dimensions—no shortcuts, no substitutions. Every unit is verified with a full inspection rep
Your drawing drives our process. We machine the 55 Type Round Bore Spring Collet Chuck to your exact dimensions—no shortcuts, no substitutions. Every unit is verified with a full inspection report before shipment. You get a part that fits your spindle, holds your workpiece, and repeats within tolerance.
At a glance: Tolerance ±0.005 mm on bore and taper, lead time 15-20 working days, no MOQ. One piece or one thousand, same process control.
| Parameter | Value |
|---|---|
| Material options | 65Mn spring steel, 60Si2MnA, 9Cr18 stainless, or per your spec |
| Hardness (after heat treat) | HRC 45-52 for spring collet body, HRC 58-62 for gripping segments |
| Bore diameter range | 3 mm to 55 mm round bore, custom sizes available |
| Concentricity (TIR) | ≤ 0.01 mm at nose, verified on CMM |
| Surface finish | Ra 0.4 µm on bore and taper, Ra 0.8 µm on body |
| Machining process | CNC turning, precision grinding, wire-cut slotting, heat treatment |
| Heat treatment | Vacuum quench + temper, uniform hardness across batch |
| Slot width tolerance | ±0.02 mm, burr-free edges |
| Batch size | 1 to 10,000 pieces, no MOQ |
| Inspection | 100% dimensional check on critical features, report per batch |
| Lead time | 15 working days for prototypes, 20 days for production runs |
We run these on our own CNC lathes and grinding machines. The factory has 20 years of precision manufacturing experience. We do not outsource heat treatment or grinding—control stays in-house.
1. Batch-traceable quality. Each collet chuck gets a unique batch number. Material heat number, heat treatment furnace record, and inspection data are all linked to that number. If you need to trace a part back to its steel coil, we can show you the chain.
2. Inspection report per batch. You do not have to trust us. We send a dimensional report with every shipment. It covers bore diameter, taper angle, slot width, concentricity, and hardness. The report matches your drawing callouts line by line. If something is off, we catch it before packing, not after you install it.
3. One factory for CNC, stamping, springs, and heat sinks. Your collet chuck is often part of a larger assembly. We make the chuck, the springs inside it, and the heat sink nearby. You send one drawing package, get one quote, one quality standard, and one shipping point. Fewer vendors, fewer delays, fewer arguments about who is responsible for fit.
The 55 Type Round Bore Spring Collet Chuck is a workhorse in automatic lathes. Common applications include:
The round bore design suits round stock. The spring steel body flexes within its elastic limit, so the collet returns to its original shape after release. That repeatability is what keeps your cycle times stable and your scrap rate low.
Looking for a different part? We also machine Custom CNC Collet Chuck Auto Lathe 25 Type Triangle Bar Stock in the same Dongguan factory.
Q: Is there a minimum order quantity? A: No MOQ. We machine one piece for prototype validation or 10,000 for production. The per-piece price drops with quantity, but the process control stays identical.
Q: What tolerance can you hold on the bore and taper? A: Standard is ±0.005 mm on bore diameter and ±0.01 mm on taper angle. We can hold tighter if your drawing specifies it, but we will tell you honestly if it affects cost or lead time.
Q: What is your typical lead time? A: 15 working days for a prototype or small batch, 20 days for production runs. Heat treatment and grinding are the longest steps. If you need faster, we can discuss split delivery—ship what is done first, then the rest.
Q: Do you provide material certificates? A: Yes. Every batch comes with a mill certificate for the raw material, heat treatment report, and our dimensional inspection report. If your customer requires a specific standard (ASTM, DIN, JIS), we source to that standard and document it.
Stop guessing whether a supplier can hold your tolerance. Send us your drawing and get a firm quote in 12 hours. We will confirm material, process, price, and lead time—no vague promises.
Email: sc@bquq.com WhatsApp: +86 13713157787
Your custom CNC collet chuck, made in China, verified before shipment. No MOQ, no games. Just precision manufacturing.
| 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 |
