Kennametal 1246534 Hydraulic Chuck HSK63A 0.75 in Bore

Product Description

The KENNAMETAL 1246534 is a hydraulic tool chuck designed for precision CNC machining applications. It features an HSK63A taper shank interface and accepts tooling with a 0.75 inch (19.05 mm) bore diameter. The chuck delivers a projection of 101.6 mm and a nose diameter of 41.66 mm, making it well suited for close-tolerance milling, drilling, and reaming operations. Balanced to 15,000 RPM, it supports high-speed spindle work without introducing vibration-induced runout. Through-coolant capability directs cutting fluid directly to the tool tip, extending tool life and improving chip evacuation in deep-hole and high-feed applications. Weighing 3.13 pounds, this chuck is a rigid, production-grade workholding solution installed by CNC machinists and toolroom technicians.

This hydraulic chuck is intended for use on machining centers and CNC mills equipped with an HSK63A spindle interface. The HSK63A hollow-shank taper provides repeatable radial and axial positioning, which is critical in lights-out or high-volume production environments. The 101.6 mm projection suits applications where reach past a fixture or workpiece shoulder is required. Through-coolant compatibility makes it a practical choice for aerospace, automotive, and precision-parts manufacturers running extended cutting cycles with carbide tooling.

Key Features

• HSK63A taper shank for rigid, repeatable spindle mounting
• 0.75 inch (19.05 mm) bore diameter for standard shank tooling
• Balanced to 15,000 RPM for high-speed machining without vibration
• Through-coolant capable for direct cutting-fluid delivery to the tool tip
• 101.6 mm projection for reach in complex fixturing scenarios
• Nose diameter of 41.66 mm for clearance in tight-tolerance setups

Compatibility

Designed for use on CNC machining centers and mills equipped with an HSK63A spindle interface and accepting 0.75 inch straight-shank tooling.

Installation Notes

Installation should be performed by a qualified CNC machinist or toolroom technician familiar with HSK toolholder seating procedures. Ensure the spindle and chuck taper faces are clean and free of chips or coolant residue before seating the chuck. Confirm through-coolant ports are clear and properly mated to the machine spindle coolant supply before operation. Torque any clamping elements only with manufacturer-specified tooling; do not exceed the machine spindle draw-bar force rating.