Kennametal 5520975 Hydraulic Tool Chuck HSK63A

Product Description

The KENNAMETAL 5520975 is a hydraulic tool chuck designed for precision CNC machining applications. It features an HSK63A taper shank interface, which provides rigid, high-repeatability tool clamping for demanding milling, boring, and finishing operations. The chuck accepts a 20 mm tool shank and delivers 90 mm of projection from the spindle face, making it suitable for reaches requiring clearance around fixtures or complex workpieces. Through-coolant capability directs cutting fluid directly to the tool tip for improved chip evacuation and thermal management. Machinists and CNC setup technicians install this chuck as part of the spindle tooling assembly on machining centers equipped with HSK63A spindle interfaces.

This hydraulic chuck is used in precision machining environments, including aerospace, die and mold, and general metalworking shops. It is suited for machining centers running moderate to high spindle speeds where runout control and vibration damping are critical. The 41 mm clamping depth provides secure grip on 20 mm shank tooling, and the 52.5 mm nose diameter accommodates standard hydraulic expansion sleeves. Installation is performed by qualified CNC machinists or tooling technicians as part of routine spindle tooling setup.

Key Features

• HSK63A taper shank for rigid, repeatable spindle connection
• 20 mm tool holding bore with 41 mm clamping depth for secure grip
• 90 mm projection accommodates reach requirements around fixtures
• Through-coolant design channels fluid directly to the cutting zone
• 52.5 mm nose diameter compatible with standard hydraulic chuck sleeves
• 121.9 mm overall length for predictable tool assembly gauging

Compatibility

Designed for use with machining centers equipped with HSK63A spindle interfaces and 20 mm shank cutting tools with through-coolant capability.

Installation Notes

Installation should be performed by a qualified CNC machinist or tooling technician. Power down and lock out the machine spindle before mounting or removing the chuck assembly. Use a calibrated torque wrench and follow the machine tool manufacturer specifications for HSK interface clamping force. Verify runout with a dial indicator after seating to confirm proper tool assembly before cutting.