OpeningYour drawing drives the build. We machine each 25 Type long nose collet to your exact profile, heat treat, and grind the nose. Every unit is verified against your dimensions
Custom CNC Collet Chuck Long Nose Extended Auto Lathe 25 Type
OpeningYour drawing drives the build. We machine each 25 Type long nose collet to your exact profile, heat treat, and grind the nose. Every unit is verified against your dimensions before shipment. No
Get a Fast Quote for This Part
Send us your drawing / quantity / material — reply within 24h.
Your drawing drives the build. We machine each 25 Type long nose collet to your exact profile, heat treat, and grind the nose. Every unit is verified against your dimensions before shipment. No surprises.
At a glance: Tolerance ±0.005 mm on bore and nose OD. Lead time 7–12 working days. No MOQ. Material certs included.
Specifications
Parameter
Value
Type
Auto Lathe 25 Type, long nose extended
Nose length
25 mm to 80 mm (custom per drawing)
Bore tolerance
±0.005 mm (grinded after heat treatment)
Nose OD tolerance
±0.005 mm
Concentricity
≤0.008 mm TIR to shank
Hardness
58–62 HRC (through hardened, not case only)
Material options
AISI 4140, 8620, 12L14, SUS440C, or your specified alloy
Surface finish
Ra 0.4 µm on bore and nose, Ra 0.8 µm on body
Process
CNC turning, milling, heat treat, centerless grind, final inspection
Batch size
1 piece to 5,000 pieces, no MOQ
Inspection
100% dimensional check on critical features, report per batch
We use CNC lathes with live tooling for the body and profile. Heat treatment is done in-house with a vacuum furnace. The bore and nose are centerless ground after hardening to hold the tolerance and concentricity. This is not a turned-only part. The grind is what makes it a collet.
Three reasons buyers send us their drawings
1. Batch-traceable quality. Each batch gets a unique job number. Material heat number, machine operator, and inspection records are linked to that number. If you have a problem on your line, we trace it in minutes, not days.
2. Inspection report per batch. You get a dimensional report with actual measured values, not just a pass/fail. We record bore ID, nose OD, concentricity, and hardness for every batch. This report is included free with shipment.
3. One factory for CNC + stamping + spring + heatsink. Your collet chuck is often part of a larger assembly. We make the collet, the spring that holds it, the stamped retainer plate, and the heatsink for your motor driver. One purchase order, one shipping point, one quality standard. You save freight and avoid tolerance mismatch between suppliers.
Where these parts are used
The 25 Type long nose collet is standard on Swiss-type and sliding headstock auto lathes. It grips bar stock from 1 mm to 25 mm diameter. The long nose reaches into tight fixtures where a standard collet cannot go.
Typical applications:
Medical device machining: Gripping small diameter stainless wire for bone screws and dental implants. The long nose clears the guide bushing.
Watch and instrument parts: Holding brass or aluminum bar for pinions, gears, and balance staffs. The extended nose supports the bar close to the cutting tool, reducing deflection.
Electronics connectors: Machining gold-plated pins and sockets from copper alloy. The tight concentricity keeps the pin OD consistent over long runs.
Automotive fuel injectors: Gripping hardened steel blanks for nozzle bodies. The through-hardened collet resists wear from abrasive materials.
Buyers also use these as replacement collets for worn OEM parts. We match the original geometry exactly, so you do not need to re-set your machine.
Q: What is your MOQ?
A: No MOQ. We make one piece for prototype or 5,000 for production. The unit price drops with quantity, but the first article is always machined and inspected the same way.
Q: How do you guarantee tolerance and quality?
A: We grind the bore and nose after heat treatment, not before. This is the only way to hold ±0.005 mm on a hardened part. Each piece is measured on a CMM or air gauge, and the report is sent with the shipment. If any dimension is out, we replace the part at our cost.
Q: What is your lead time?
A: Standard lead time is 7–12 working days from drawing approval. For urgent orders, we can rush a single prototype in 3 working days at a 20% surcharge. Production batches of 500+ pieces take 12–15 working days.
Q: Do you provide material certificates?
A: Yes. Every batch includes a mill certificate for the raw material and a heat treatment certificate showing the hardness curve. If you need a third-party inspection (SGS, TUV), we arrange it at cost.
Send your drawing
Send us your 2D or 3D drawing. We reply with a firm quote in 12 hours, including unit price, lead time, and a technical review of any risky dimensions. If your drawing is incomplete, we tell you exactly what we need.
Email: sc@bquq.com
WhatsApp: +86 13713157787
Precision manufacturing, made in China, no MOQ. Your custom CNC collet chuck, verified and shipped.
