Sandvik Coromant 5757221 Indexable Toolholder Shim

Product Description

The SANDVIK COROMANT 5757221 is a 171.31-style shim designed for indexable toolholders. It seats beneath an indexable insert to establish correct cutting geometry and protect the toolholder pocket from wear. The shim measures 0.625 inches in inscribed circle diameter and 0.250 inches thick, ground to a positive rake orientation. It is suited for left-hand and right-hand cutting directions, making it versatile across a range of turning and boring applications. Machinists and toolroom technicians install this component as part of routine insert changes or when a worn or damaged pocket shim needs replacement. Sold individually, with a minimum order quantity of 10 units per order.

This shim is intended for use in indexable toolholder systems that accept a 5/8 inch inscribed circle insert and require the 171.31 shim style. It applies to production turning, facing, and profiling operations in both light and moderate material removal setups. The positive rake geometry is appropriate for applications where reduced cutting forces and cleaner chip formation are priorities. Shops running high-volume insert changes will benefit from keeping these shims on hand as a consumable component alongside their insert inventory.

Key Features

• 171.31 shim style for precise seating and pocket protection in compatible toolholders
• 5/8 inch (0.6250 inch) inscribed circle matches standard indexable insert sizing
• 1/4 inch (0.2500 inch) thickness for accurate insert height positioning
• Positive rake geometry reduces cutting forces and supports clean chip flow
• Compatible with both left-hand and right-hand cutting directions
• Sold as single shim per package unit; minimum order quantity of 10

Compatibility

Designed for indexable toolholders requiring the 171.31 shim style with a 5/8 inch inscribed circle insert seat. Manufacturer catalog number for this shim style is 171.31-852. Verify toolholder pocket specifications before ordering to confirm shim style and thickness compatibility.

Installation Notes

Shim installation is performed by qualified machinists or toolroom technicians during insert indexing or toolholder maintenance. Always power down and lock out the machine spindle before accessing the toolholder pocket. Inspect the pocket seat for damage or debris before placing the new shim, and torque the insert clamping screw to the toolholder manufacturer's specified value using the correct Torx or hex key. Do not reuse a shim that shows signs of deformation, cracking, or uneven wear.