Techniks CAT40ER16-4 ER16 Collet Chuck CAT40 4 in

Product Description

The TECHNIKS CAT40ER16-4 is an ER16 collet chuck with a CAT40 taper shank designed for use in CNC machining centers and manual milling machines. It accepts ER16 collets with a capacity range from 1/16 inch minimum to 0.406 inches maximum, making it suitable for a wide range of small-diameter cutting tools. The chuck features a 4-inch projection and an overall length of 6.687 inches, providing reach into deep pockets or fixtures where shorter toolholders cannot access. A licensed machinist or CNC tooling technician installs and configures this holder as part of a precision toolholding setup.

This collet chuck is suited for production and job-shop environments running CNC vertical or horizontal machining centers equipped with a CAT40 spindle interface. It is commonly used when holding end mills, drills, reamers, and other round-shank tooling within the ER16 collet capacity range. The 4-inch projection accommodates setups requiring additional clearance between the spindle face and the workpiece or fixture. Through-coolant is not supported on this model.

Key Features

• CAT40 taper shank for direct mounting in CAT40-equipped machining center spindles
• ER16 collet system with a capacity range of 1/16 inch to 0.406 inches
• 4-inch projection for extended reach in deep-pocket or tall-fixture applications
• Overall length of 6.687 inches for predictable gage-line to tip dimensions
• Rated nut tightening torque of 42 ft-lb for repeatable clamping force
• No through-coolant passages, keeping the design straightforward and cost-effective for standard flood-coolant setups

Compatibility

Designed as an OEM-style toolholding solution for CNC machining centers with a CAT40 spindle interface, used with standard ER16 collets.

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling technician. Power down and lock out the machining center spindle before inserting or removing the toolholder. Use a calibrated torque wrench to tighten the ER16 collet nut to the specified value to ensure proper clamping and avoid collet or chuck damage. Inspect the CAT40 taper and spindle bore for chips or contamination before seating the holder.