Kennametal 1749472 CAT50 Straight Shank Adapter 3/4 in

Product Description

The KENNAMETAL 1749472 is a CAT50 taper straight shank with flat adapter designed for CNC machining centers that require a secure, high-rigidity toolholder interface. This adapter features a 0.75 inch inside hole diameter, a 2.75 inch projection, and a 1.75 inch nose diameter, making it suited for a range of boring, milling, and drilling applications. Through-coolant capability allows cutting fluid to be delivered directly to the cutting zone, reducing heat buildup and improving chip evacuation in demanding material removal operations. It is installed and serviced by CNC machinists and toolroom technicians.

This adapter is intended for use on CNC machining centers equipped with CAT50 spindle tapers. It is a common fit for heavy-duty vertical and horizontal machining centers in production environments where high torque and rigidity are required. The through-coolant feature makes it well suited for deep-hole drilling and high-feed milling where flood coolant alone is insufficient. The drawbar thread size of 1-8 inch ensures compatibility with standard CAT50 retention knobs used across most machine tool platforms.

Key Features

• CAT50 taper interface for high-rigidity spindle connection on heavy-duty machining centers
• 0.75 inch inside hole diameter with 2.75 inch projection for reach and clearance flexibility
• Through-coolant design delivers coolant directly to the cutting edge for improved tool life
• 1.75 inch nose diameter provides robust support for tooling in high-torque applications
• 1-8 inch drawbar thread size compatible with standard CAT50 retention knobs
• Straight shank with flat adapter geometry allows secure set-screw clamping of round-shank tooling

Compatibility

Designed as an OEM-style toolholder adapter for CNC machining centers equipped with CAT50 spindle tapers and standard 1-8 inch drawbar threads.

Installation Notes

Installation should be performed by a qualified CNC machinist or toolroom technician with the machine powered down and the spindle at rest. Clean the CAT50 taper bore and the adapter taper thoroughly before seating to prevent fretting and ensure proper contact. Torque the retention knob to the machine tool manufacturer's specification. Verify through-coolant passages are clear and that the coolant supply line is properly connected before resuming operation.