Kennametal 2249707 ER16 Collet Chuck CAT50 Taper Shank

Product Description

The KENNAMETAL 2249707 is an ER16 collet chuck designed for CNC machining centers and milling machines equipped with a CAT50 taper shank spindle. It accepts ER16 collets with a clamping range of 0.51 mm to 10 mm (0.0200 to 0.3937 inches), making it suitable for a broad range of small-diameter cutting tools including end mills, drills, and reamers. The chuck features a 4-inch projection and an overall length of 8 inches. Through-spindle and DIN flange coolant delivery is supported, directing coolant directly to the cutting zone for improved chip evacuation and tool life. The unit is balanced to 12,000 RPM and actuated with a wrench via the included collet nut.

This collet chuck is suited for production machining environments where consistent tool holding and coolant-through capability are required. It fits CAT50 spindle tooling configurations common in heavy-duty vertical and horizontal machining centers used in metalworking, aerospace, and general manufacturing applications. The ER16 collet series is widely used for light to medium-duty milling and drilling operations requiring precise, repeatable tool runout. Installation and tool changes are performed by qualified machine operators or toolroom technicians using a standard ER collet wrench and torque procedure per the machine tool manufacturer guidelines.

Key Features

• ER16 collet system with clamping range of 0.51 mm to 10 mm
• CAT50 taper shank for direct spindle mounting on compatible machining centers
• 4-inch projection and 8-inch overall length for reach into deep workpiece features
• Through-spindle and DIN flange coolant delivery for active cutting zone cooling
• Balanced to 12,000 RPM for stable high-speed operation
• Wrench-actuated collet nut with 27.99 mm (1.1020 inch) nut diameter

Compatibility

Designed for use with ER16 collets in CAT50 taper spindle machining centers. Accepts any standard ER16 collet within the stated capacity range.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician. Power down and lock out the machining center spindle before mounting or removing the chuck. Use a calibrated ER collet wrench and follow the machine tool manufacturer torque specifications for the collet nut. Inspect the taper shank and spindle bore for contamination or damage before seating the tool holder.