Sandvik Coromant 5757301 Indexable Shim 1/2 in Positive Rake

Product Description

The SANDVIK COROMANT 5757301 is a 170.3-style shim designed for indexable toolholder assemblies. Shims of this type seat between the insert pocket and the cutting insert, maintaining precise insert positioning and protecting the toolholder body from wear and impact damage. This shim features a positive rake geometry and is compatible with left-hand, neutral, and right-hand cutting directions, making it a versatile component for multi-direction turning applications. It measures 3/16 inch thick with a 1/2 inch inscribed circle and weighs 0.34 pounds. Installed by machinists and tool-crib technicians, this part is a direct replacement consumable in indexable turning and boring setups.

This shim is intended for use in indexable toolholder configurations requiring a 170.3 shim style with a 1/2 inch inscribed circle. Typical applications include CNC turning centers and manual lathes where positive-rake insert geometries are used. The multi-directional cutting compatibility — left-hand, neutral, and right-hand — makes this shim suitable across a range of toolholder orientations without requiring a style change. It is sold individually but must be ordered in multiples of 10.

Key Features

• 170.3 shim style for indexable toolholder insert pockets
• Positive rake geometry supports efficient cutting and reduced cutting forces
• Compatible with left-hand, neutral, and right-hand cutting directions
• 1/2 inch inscribed circle (0.5000 inches decimal) for precise insert seating
• 3/16 inch thickness (0.1875 inches decimal) for accurate pocket depth control

Compatibility

Designed as an OEM-style replacement shim for indexable toolholders requiring the 170.3 shim style with a 1/2 inch inscribed circle. Manufacturer catalog reference: 170.3-859.

Installation Notes

Installation is performed by qualified machinists or tool-crib personnel during insert change or toolholder maintenance. Before servicing, ensure the machine is powered down and locked out per applicable OSHA lockout/tagout procedures. Inspect the insert pocket for debris or damage before seating the shim. Do not reuse damaged or deformed shims, as improper seating can cause insert instability and toolholder damage.