Techniks 22243-2.5 ER25 Collet Chuck CAT40 Taper Shank

Product Description

The TECHNIKS 22243-2.5 is an ER25 collet chuck with a CAT40 taper shank, designed for use in CNC machining centers and milling applications. It accepts ER25 collets with a capacity range of 3/32 inch minimum to 3/4 inch maximum, covering a wide variety of tooling diameters. The overall length is 5.18 inches with a 2.5 inch projection from the gauge line to the collet nose. This chuck is installed by qualified machinists and tooling technicians on vertical and horizontal CNC machining platforms where repeatable tool holding and concentricity are required.

This ER25 collet chuck is suited for production and job-shop CNC milling environments using CAT40 spindles. The 2.5 inch projection provides clearance for mid-reach applications where standard-length holders may cause spindle interference. The ER25 collet system is widely used across light to medium-duty cutting operations including drilling, reaming, and end milling. No through-coolant path is present in this model, making it appropriate for dry cutting or flood coolant setups where internal coolant delivery is not required.

Key Features

• CAT40 taper shank for direct mounting in CAT40 CNC spindles
• ER25 collet system with 3/32 inch to 3/4 inch capacity range
• 5.18 inch overall length with 2.5 inch projection for mid-reach clearance
• No through-coolant, compatible with flood or dry cutting setups
• Supports a broad range of ER25 collets for versatile tooling configurations

Compatibility

Designed for use with CAT40 spindle machines accepting ER25 collets. Compatible with any standard ER25 collet within the 3/32 inch to 3/4 inch capacity range.

Installation Notes

Installation should be performed by a qualified machinist or tooling technician. Ensure the machine spindle is fully stopped and the tool changer is disabled before mounting or removing the chuck. Use a calibrated torque wrench and the appropriate ER25 collet nut spanner when seating collets to avoid over-tightening or under-tightening the nut. Inspect the CAT40 taper and spindle bore for chips, nicks, or contamination before installation to maintain proper seating and runout performance.