Kennametal 1274022 Indexable Turning Shim Icsn Negative Rake

Product Description

The KENNAMETAL 1274022 is an ICSN-style shim designed for indexable turning toolholders. Shims seat beneath the insert to set height, protect the pocket floor, and maintain consistent cutting geometry across insert changes. This shim is ground to a 0.255 inch thickness and fits inserts with a 3/4 inch (0.7500 inch decimal) inscribed circle. It is configured for negative rake applications, making it compatible with negative rake insert geometries commonly used in turning operations on ferrous and hard materials. Toolroom technicians and CNC machinists install these as part of routine insert indexing and toolholder maintenance.

This shim is suited for lathe and turning center applications where negative rake diamond-shaped inserts are used. It fits into ICSN-style toolholder pockets and is appropriate for both roughing and finishing turning operations. The 3/4 inch inscribed circle size covers a common range of medium to large negative rake diamond inserts used in production turning environments. Sold individually, with a minimum order quantity of 10 pieces.

Key Features

• ICSN shim style for negative rake indexable turning toolholders
• Compatible insert shape: Diamond
• Inscribed circle: 3/4 inch (0.7500 inch decimal)
• Thickness: 0.255 inches for precise insert seating and height control
• Negative rake geometry protects pocket floor during heavy turning cuts
• Sold per piece with a minimum order quantity of 10

Compatibility

Designed for use in ICSN-style indexable turning toolholders accepting negative rake diamond inserts with a 3/4 inch inscribed circle.

Installation Notes

Installation is performed by toolroom machinists or CNC setup technicians as part of indexable toolholder assembly or insert change procedures. Ensure the toolholder pocket and shim seating surface are clean and free of chips or debris before placing the shim. Do not reuse a shim that shows deformation, cracking, or wear on the seating face, as this will affect insert positioning and cutting geometry. Follow the toolholder manufacturer torque specifications for the insert clamping screw.