Spi 98-323-9 Center Finder 0.2 in Head 3/8 in Shank

Product Description

The SPI 98-323-9 is a mechanical center finder designed for locating the center of round stock, drilled holes, and machined features on mills, lathes, and drill presses. The tool uses a conical contact head with a 0.2-inch head diameter and mounts via a 3/8-inch shank. It operates without batteries or electronics, relying on mechanical deflection to indicate centerline position. Machinists and toolmakers use this type of center finder during workpiece setup to achieve repeatable, accurate part registration before cutting operations begin.

This center finder suits light industrial and job-shop applications where fast, reliable center location is needed. It is well suited for use in CNC machining centers, manual knee mills, and drill press setups where a standard 3/8-inch tool holder or collet is available. The single-end configuration keeps the tool compact and easy to handle during fixturing. Typical users include machinists, toolroom technicians, and precision metalworkers performing workholding and part alignment tasks.

Key Features

• Mechanical operation requires no power source or electronics
• Conical contact head for consistent centerline contact on round and cylindrical features
• 0.2-inch head diameter suited for locating small bores and center-punched marks
• 3/8-inch shank diameter fits standard collets and tool holders
• Single-end design for straightforward chuck-up and use

Compatibility

Designed for use with machine tool spindles and toolholders accepting a 3/8-inch shank, including standard collet chucks on vertical mills, CNC machining centers, and drill presses.

Installation Notes

Installation is performed by machinists as part of workpiece setup. Power down or engage the spindle lock before inserting or removing the tool from the holder. Secure the shank fully in the collet or chuck to the appropriate holding depth before running the spindle. Follow standard shop safety practices and machine manufacturer guidelines when using edge finders and center finders at operating speed.