Kennametal 1094428 Indexable Turning Toolholder STGCL103

Product Description

The KENNAMETAL 1094428 is a left-hand indexable turning toolholder in the STGC style, designed for precision external turning operations on CNC lathes and manual turning centers. It uses a screw-clamp insert holding method with a neutral rake angle of 0 degrees, providing stable, repeatable cutting performance. The shank measures 0.625 inches wide by 0.630 inches high with an overall length of 4 inches. This toolholder is built from steel and accepts TC-style trigon inserts with a 3/8-inch inscribed circle. It is installed by machinists and toolroom technicians in production and job-shop environments.

This toolholder is suited for left-hand turning applications where tool approach direction requires a left-hand orientation. It is commonly mounted on turret-style lathes and CNC turning centers in both production and job-shop settings. The screw-on series design ensures secure insert seating during interrupted and continuous cuts. Compatible insert geometry is the TC.. 3252 family, which covers standard trigon insert configurations appropriate for a range of ferrous and non-ferrous workpiece materials.

Key Features

• STGC-style toolholder with left-hand orientation for specific approach and clearance requirements
• Screw-clamp insert holding method for positive, repeatable insert indexing
• Neutral rake angle (0 degrees) for broad material compatibility
• Steel construction for rigidity and durability under cutting loads
• 4-inch overall length with 3/4-inch back-of-bar to cutting edge distance
• No coolant-through configuration - external coolant application applies

Compatibility

Accepts TC.. 3252 series trigon inserts with a 3/8-inch (0.375-inch) inscribed circle. Insert style compatibility code is TC..32.5. Confirm insert geometry and grade selection against workpiece material and cutting parameters before installation.

Installation Notes

Installation and insert indexing should be performed by a qualified machinist or toolroom technician. Ensure the lathe or turning center is fully powered down and the spindle is locked before mounting or removing the toolholder from the turret. Use the appropriate torque wrench and insert screw driver for the clamping screw to avoid stripping the screw seat. Follow the machine tool manufacturer guidelines and applicable shop safety procedures when setting tool offsets after installation.