Kennametal 1097251 Threading Toolholder Left Hand 1-1/4 in

Product Description

The KENNAMETAL 1097251 is an indexable threading toolholder in the Top Notch series, designed for both internal and external threading operations on CNC lathes and manual turning centers. Configured for left-hand cutting, it accepts a NU 3125R insert secured by a clamp-style insert holding method. The shank measures 1.25 inches wide by 1.25 inches tall, and the toolholder has an overall length of 6 inches. With a back-of-bar to cutting edge distance of 1.5 inches, it positions the insert accurately for consistent thread form and surface finish. This toolholder weighs approximately 2.47 pounds.

This toolholder is suited for threading applications in production and job-shop turning environments. It handles both internal and external thread profiles, making it a versatile choice for machinists working on a range of part geometries. The left-hand orientation accommodates threading away from the chuck or in reverse-spindle setups. It is typically installed by machinists and CNC lathe operators in metalworking and manufacturing facilities. Coolant-through capability is not available on this model.

Key Features

• Accepts NU 3125R indexable threading insert secured by clamp-style holding method
• Left-hand cutting orientation for reverse-spindle or away-from-chuck threading
• Compatible with both internal and external threading operations
• 1.25 x 1.25 inch square shank for rigid, repeatable tool positioning
• 6 inch overall length with 1.5 inch back-of-bar to cutting edge distance
• Top Notch series construction for consistent insert indexing

Compatibility

Designed for use with the NU 3125R indexable threading insert. Part of the KENNAMETAL Top Notch toolholder series. Verify insert compatibility and shank size against your turret or tool block specifications before installation.

Installation Notes

Installation is performed by qualified machinists or CNC setup technicians. Power down and lock out the machine spindle before mounting or changing toolholders. Ensure the shank bore or turret pocket is clean and within tolerance before seating the toolholder. Torque all clamping bolts to machine or turret manufacturer specifications and confirm insert seating before resuming operation.