Value Collection PTP-4 Indexable Shim 0.5 Inch Triangle Insert

Product Description

The VALUE COLLECTION PTP-4 is a solid carbide shim designed for use with indexable cutting tool holders. It supports triangular inserts with a 0.5-inch inscribed circle and features a positive rake geometry. At 0.125 inches thick, this PTP-series shim provides a stable seating surface that protects the tool holder pocket from insert contact wear and helps maintain precise insert positioning during cutting operations. It is intended for machinists and tool crib technicians working with indexable turning, boring, or milling tooling systems that require shim replacement or initial setup.

This shim is used in indexable tooling assemblies where a triangular insert with a 0.5-inch inscribed circle is seated in a positive-rake holder. It fits into the insert pocket between the holder body and the cutting insert, absorbing the cutting forces that would otherwise damage the holder seat. Typical applications include production turning and general-purpose machining operations in shop environments where indexable tooling is standard practice. Replacement shims like the PTP-4 are a routine consumable in any shop running high-volume indexable tooling programs.

Key Features

• Solid carbide construction for hardness and wear resistance in the insert pocket
• Compatible with triangular indexable inserts at 0.5-inch inscribed circle
• Positive rake geometry matches positive-rake toolholder configurations
• 0.125-inch thickness provides consistent insert seating height
• PTP series designation for straightforward cross-reference and replacement
• Industry standard number PTP-4 for easy identification and ordering

Compatibility

Designed as an OEM-style replacement shim for indexable toolholders accepting triangular inserts with a 0.5-inch inscribed circle in positive-rake configurations.

Installation Notes

Installation is performed by qualified machinists or tool crib personnel during toolholder maintenance or insert changeover. Ensure the toolholder is removed from the machine spindle or turret and all machine power is off before servicing the insert pocket. Clean the pocket seat thoroughly before seating the shim to prevent rocking or misalignment. Follow the toolholder manufacturer's torque specifications for the clamp screw when reassembling the insert and clamp.