Techniks 254750 Hydraulic Tool Chuck Taper Shank

Product Description

The TECHNIKS 254750 is a hydraulic tool chuck with a taper shank design, built for precision toolholding in CNC machining centers and milling applications. The chuck accepts a 3/4-inch hole diameter and features a 1.55-inch (39.25 mm) nose diameter, providing a secure, vibration-damping grip on cutting tools through hydraulic clamping pressure. Through-coolant capability allows cutting fluid to pass directly to the tool tip, supporting high-speed and deep-cutting operations. This chuck is installed by machinists and CNC setup technicians working in production and job-shop environments.

The 254750 is suited for use in CNC vertical and horizontal machining centers that accept taper shank toolholders. The 3/4-inch shank diameter and through-coolant feature make it appropriate for drilling, reaming, and finish milling operations where coolant delivery and runout control are critical. It is commonly used in aerospace, automotive, and general metalworking applications where consistent tool grip and thermal stability are required.

Key Features

• Hydraulic clamping mechanism reduces vibration and improves surface finish compared to mechanical collet chucks
• Through-coolant design delivers fluid directly to the cutting zone for improved chip evacuation and tool life
• 3/4-inch hole diameter accommodates standard shank cutting tools
• 1.55-inch (39.25 mm) nose diameter provides radial rigidity in the spindle
• Taper shank configuration for repeatable seating in compatible spindle interfaces

Compatibility

Designed as an OEM-style hydraulic toolholder replacement for CNC machining centers accepting taper shank toolholders with a 3/4-inch bore and through-coolant spindle interface.

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling technician. Power down and lock out the machine spindle before inserting or removing the toolholder. Use the appropriate spanner or torque tool specified by the machine manufacturer when seating taper shank holders - do not impact the flange or taper surface. Verify through-coolant passages are clear before mounting and confirm spindle taper cleanliness to ensure proper seating and runout.