Spi 98-316-3 Electronic Center Depth Finder

Product Description

The SPI 98-316-3 is an electronic center and depth finder designed for precision locating work on milling machines, machining centers, and similar setups. With a 0.4-inch cylindrical contact head and a 0.75-inch shank diameter, it mounts securely in standard spindles and delivers repeatability down to 0.0001 inches. The single-end design provides a clean, consistent reference point for edge-finding, center-finding, and depth measurement tasks. At 1.22 pounds and 6.0625 inches in overall length, it fits comfortably in most tool holders without requiring adapters. Machinists and tool-and-die technicians rely on this type of instrument to eliminate manual indicating steps and reduce setup time on close-tolerance work.

This center and depth finder is suited for machine shops, toolrooms, and production environments where accurate workpiece location is critical. It is appropriate for use on vertical and horizontal machining centers, knee mills, and similar CNC or manual equipment. The electronic output replaces the visual runout method used with mechanical edge finders, giving the operator a clear signal at the point of contact. It is typically installed and used by machinists, setup technicians, and manufacturing engineers handling precision fixture and part setup.

Key Features

• Electronic sensing with 0.0001-inch accuracy for precise center and edge location
• Cylindrical contact head at 0.4 inches diameter for consistent surface contact
• 0.75-inch shank diameter fits standard spindle tool holders
• Single-end configuration for straightforward setup and use
• 6.0625-inch overall length suits most vertical and horizontal machine setups
• Compact 1.22-pound weight minimizes spindle load during setup operations

Compatibility

Designed as an OEM-style precision tool for use in machining spindles and tool holders accepting a 0.75-inch shank diameter.

Installation Notes

Installation is performed by qualified machinists or setup technicians. Before mounting, ensure the spindle is fully stopped and the machine control is in a safe state. Insert the 0.75-inch shank into the appropriate tool holder and tighten to the holder manufacturer's recommended clamping procedure. Follow your facility's lockout and tagout procedures before making any spindle or tool changes.