Sandvik Coromant 5755579 Turning Insert VBGT3303-UM H13A

Product Description

The SANDVIK COROMANT 5755579 is a solid carbide, uncoated turning insert designed for precision external and internal turning operations. Carrying the grade designation H13A and chip breaker style UM, this insert features a 35-degree diamond (V) shape with a neutral hand orientation and a 5-degree relief angle. The corner radius measures 0.10 mm (0.0039 inches), making it well suited for finishing and semi-finishing passes where tight tolerances and fine surface finish are required. It is held in place by a screw-type clamping system. Licensed machinists and CNC lathe operators typically specify this insert for production turning environments.

This insert is part of the CoroTurn 107 series and is primarily intended for machining steel (ISO material code P) and stainless steel (ISO material code M). It fits toolholders designed for VBGT-style inserts with a 3/8-inch inscribed circle. The UM chip breaker geometry is optimized for light to medium depths of cut and lower feed rates, making it a common selection for finishing operations on steel and stainless steel components in both job-shop and production settings.

Key Features

• Solid carbide construction with bright/uncoated finish in grade H13A
• 35-degree diamond insert shape (V) with 5-degree relief angle for clearance in tight geometries
• UM chip breaker geometry optimized for finishing and semi-finishing on steel and stainless steel
• 0.10 mm corner radius for fine surface finish on precision components
• Neutral hand orientation for flexible toolholder pairing
• Screw-type insert holding method for secure, repeatable seating
• Two cutting edges per insert for extended tool economy

Compatibility

Designed for use in CoroTurn 107 series screw-clamp toolholders accepting VBGT-style inserts with a 3/8-inch (0.3750-inch) inscribed circle. ISO code VBGT 16 04 01-UM H13A. Primary workpiece material is steel (P); secondary workpiece material is stainless steel (M).

Installation Notes

Installation is performed by a qualified machinist or CNC tooling technician. Before changing inserts, power down and lock out the machine spindle per your facility lockout/tagout procedure. Seat the insert fully in the pocket and tighten the clamping screw to the torque specification listed in the toolholder manufacturer documentation — do not use the torque value from this listing as none was provided in the product data. Inspect the insert pocket for chips or debris before seating a new insert to ensure proper contact and prevent premature edge failure.