Spi 98-329-6 Edge Finder 0.5 in Mechanical Cylindrical

Product Description

The SPI 98-329-6 is a mechanical edge finder designed for use in milling and boring operations to locate the precise edge of a workpiece. With a 0.5 inch head diameter and a 0.5 inch shank diameter, it mounts directly into a standard milling machine spindle or drill chuck. The cylindrical contact head deflects at the moment of contact with the workpiece edge, signaling a repeatable reference point. Accuracy is rated at 0.0002 inches (5 micrometers), making it a reliable tool for setups that demand tight positional tolerances. Machinists and toolroom technicians use this type of finder as a standard step before beginning a machining operation.

This edge finder is suited for manual milling machines and CNC setups where the operator is performing a manual edge-finding routine. It is a single-end design, meaning one working contact end per tool. The mechanical operation requires no electrical connection or battery, making it compatible with virtually any spindle environment. It is commonly used in job shops, toolrooms, and maintenance machining environments where workpiece datum location is required before cutting.

Key Features

• 0.0002 inch (5 micrometer) accuracy for precise workpiece edge location
• Cylindrical contact head design for consistent deflection and repeatable results
• 0.5 inch shank diameter fits standard milling machine collets and drill chucks
• Mechanical operation requires no power source or wiring
• Single-end configuration for straightforward setup
• Non-magnetic construction

Compatibility

Designed for use with standard milling machine spindles and collet systems that accept a 0.5 inch shank diameter tool holder.

Installation Notes

Edge finders are installed by machinists into a milling machine spindle using a collet or drill chuck. The spindle should be set to a low RPM before use, and the machine should be in a safe, controlled state before touching the contact head to the workpiece. Do not exceed the tool's rated operating speed, and inspect the contact head for damage before each use to ensure accurate results.