Kennametal 1094421 Indexable Turning Toolholder Stgcr

Product Description

The KENNAMETAL 1094421 is an STGCR-style indexable turning toolholder designed for external turning operations on CNC lathes and manual turning centers. It uses a screw clamp insert-holding method to secure TC-style trigon inserts with a 1/4-inch inscribed circle. The toolholder features a neutral rake angle of 0 degrees and a right-hand cutting orientation. The steel shank measures 3/8 inch wide by 3/8 inch tall and has an overall length of 2.5 inches. This toolholder is used by machinists and tool-and-die professionals requiring consistent insert positioning and rigid clamping in tight-clearance turning applications.

This toolholder is suited for light-duty external turning where a compact 3/8-inch shank is required. The STGCR configuration accommodates neutral-rake trigon inserts, making it appropriate for general-purpose turning of ferrous and non-ferrous workpieces. The back-of-bar to cutting edge distance is 0.5 inches, allowing effective tool positioning in standard tool posts and quick-change tooling systems. It is well matched to smaller lathes and Swiss-style setups where shank clearance is limited.

Key Features

• STGCR toolholder style with right-hand cutting orientation
• Screw clamp insert-holding method for positive, repeatable insert location
• Compatible with TC-style trigon inserts, 1/4-inch inscribed circle
• Neutral rake angle (0 degrees) for versatile turning applications
• Steel construction for rigidity and durability under cutting loads
• Compact 2.5-inch overall length suits tight-clearance tool posts

Compatibility

Designed for use with TC.. 2151 series trigon inserts as specified by the manufacturer. Consult the KENNAMETAL insert compatibility chart to confirm insert grade and geometry selection before ordering.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Always power down and lock out the lathe spindle before mounting or removing the toolholder from the tool post. Ensure the insert seating pocket and clamp screw are clean and free of chips before seating a new insert. Tighten the clamp screw to the torque value specified in the KENNAMETAL toolholder documentation — do not estimate clamp torque.