OpeningYour drawing defines the part. We machine it exactly to that geometry. Every ER16 collet chuck is inspected before shipment. We do not ship guesswork.Tolerance: ±0.005 mm on critical diametersR
Your drawing defines the part. We machine it exactly to that geometry. Every ER16 collet chuck is inspected before shipment. We do not ship guesswork.
| Parameter | Value | Notes |
|---|---|---|
| Standard | ER16 collet taper, 1:10 angle | Matches ER16 collet spec |
| Shank diameter | 19.05 mm or custom | Per your drawing |
| Shank tolerance | h6 | Ground finish |
| Concentricity | ≤0.005 mm TIR | Between taper and shank |
| Surface finish | Ra 0.4 µm on taper | Ground, not turned |
| Hardness | 58–62 HRC | Case-hardened |
| Case depth | 0.8–1.2 mm | Consistent, no soft spots |
| Material | 20CrMnTi, 42CrMo, or 65Mn | Your choice |
| Threads | M12, M16, or custom | Tapped after hardening |
| Key slots | Per drawing | Broached or wire-cut |
| Batch size | 1–10,000 pcs | No MOQ |
| Inspection | 100% dimension check on criticals | Report included |
Process: CNC turning of the blank, heat treatment, then cylindrical grinding for the taper and shank. We use Mazak and Okuma CNC lathes. Grinding is done on Studer or Jones & Shipman machines. This is not a milled-only part. The taper is always ground.
1. Batch-traceable quality. Each heat number and batch is logged. If a problem appears in your assembly, we trace it back to the exact material lot and machine operator. No ambiguity. This matters when you run a production line and need answers fast.
2. Inspection report per batch. You get a dimensional report with every shipment. Not a generic certificate – actual measured values for taper angle, runout, hardness, and surface finish. We use CMM and optical comparators. The report is signed by our QC lead, not a computer.
3. One factory for CNC + stamping + spring + heatsink. Your collet chuck is not the only part in your tool holder. If you also need a spring for the collet retention, a stamped washer, or a heatsink for a spindle motor, we make those in the same building. Fewer vendors, shorter lead times, one point of contact. You send a full assembly drawing, we quote the whole kit.
These collet chucks are not for hobby routers. They go into production drilling and milling spindles.
Looking for a different part? We also machine Custom CNC Machined ER40 Spring Collet Chuck for End Mill Milling in the same Dongguan factory.
Q: What is your MOQ? A: No MOQ. We make one piece for prototype validation. The price per piece is higher for a single unit, but the quality is identical to a batch of 500. Many buyers start with one, test it, then order 200.
Q: How do you guarantee tolerance and runout? A: We grind the taper and shank in the same setup on a cylindrical grinder. This eliminates setup error. Then we measure runout on a precision V-block with a 0.001 mm indicator. The inspection report shows the actual value. If it exceeds 0.005 mm TIR, we reject it.
Q: What is your lead time? A: 7 days for standard ER16 chucks in 42CrMo. 12 days if you need case-hardened 20CrMnTi with a specific case depth. For urgent orders, we can do 5 days with a 20% rush fee. We do not quote faster than we can actually deliver.
Q: Can you provide material certificates? A: Yes. We supply EN 10204 3.1 mill certificates for the raw material. For aerospace or medical applications, we can also provide full traceability to the heat number and batch. Just specify the standard you need in your RFQ.
Email your PDF or STEP file to sc@bquq.com. We reply with a firm quote in 12 hours. Not a ballpark – a fixed price with tolerance, surface finish, and lead time. You can also reach us on WhatsApp at +86 13713157787 for a quick technical discussion.
We are a 20-year-old precision manufacturing factory in Dongguan, China. We do not outsource. We machine, grind, heat-treat, and inspect in-house. Send your drawing. Get a quote. Get a part that fits.
| 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 |
