Kennametal 5520958 Hydraulic Tool Chuck HSK63A

Product Description

The KENNAMETAL 5520958 is a hydraulic tool chuck designed for precision CNC machining applications. It features an HSK63A taper shank interface and accepts tool shanks with a 0.75 inch (3/4 inch) bore diameter. The nose diameter measures 2.067 inches (52.50 mm), and the clamping depth is 1.618 inches (41.00 mm). Overall length is 4.756 inches (120.80 mm). Built-in through-coolant capability delivers cutting fluid directly to the tool tip, supporting high-speed and deep-bore operations. Licensed machinists and CNC setup technicians are the primary installers of this toolholder.

This hydraulic chuck is suited for use in machining centers and CNC mills equipped with HSK63A spindle interfaces. The hydraulic clamping mechanism provides consistent radial runout control, making it appropriate for finishing passes, reaming, and other operations where concentricity and surface finish are critical. Through-coolant support makes it well matched to deep-hole drilling and high-feed milling on production floors and job shops alike.

Key Features

• HSK63A taper shank interface for high-speed spindle compatibility
• Hydraulic clamping mechanism for repeatable, low-runout tool holding
• 0.75 inch bore diameter accommodates standard shank tooling
• Through-coolant passage directs fluid to the cutting edge
• 52.50 mm nose diameter with 41.00 mm clamping depth for secure grip
• Compact 120.80 mm overall length suits a range of machine clearances

Compatibility

Designed for use in CNC machining centers equipped with an HSK63A spindle taper interface. Accepts round-shank cutting tools with a 0.75 inch shank diameter.

Installation Notes

Installation and tool changes should be performed by qualified CNC machinists or toolroom technicians following the machine tool manufacturer's spindle service procedures. Power down and lock out the machine spindle before mounting or removing the chuck. Verify through-coolant port alignment with the machine spindle's coolant supply before operating. Follow the toolholder manufacturer's torque and clamping guidelines as specified in the accompanying documentation.