Spi Z3400 Cmm Ball Stylus 4mm Ruby Point M2 Thread

Product Description

The SPI Z3400 is a ball-type coordinate measuring machine (CMM) stylus designed for dimensional inspection and precision measurement applications. It features a 4 mm ruby ball tip threaded onto an M2 stem with a 20 mm overall length. Ruby is the standard point material for CMM styli due to its hardness, wear resistance, and consistent spherical geometry, which minimizes measurement error over repeated contact cycles. This stylus is installed and used by metrology technicians, quality control engineers, and precision manufacturing professionals operating CMM equipment in industrial inspection environments.

The Z3400 suits a wide range of contact-scanning and touch-trigger CMM applications in manufacturing and quality assurance settings. Its compact 20 mm overall length and 4 mm ball diameter make it appropriate for general-purpose surface and bore measurement where moderate reach is needed without excessive stylus deflection. It is suitable for use in both high-volume production inspection and precision toolroom measurement workflows.

Key Features

• 4 mm ruby ball tip for consistent contact geometry and extended wear life
• M2 threaded stem for compatibility with standard CMM stylus holders and extensions
• 20 mm overall length provides moderate reach for general-purpose measurement tasks
• Lightweight construction at 0.38 pounds minimizes spindle load and deflection error
• Single-piece packaging suitable for individual replacement or spare inventory

Compatibility

Designed as a standard M2-thread replacement ball stylus for use with touch-trigger and scanning CMM probes that accept M2 stylus connections.

Installation Notes

CMM styli should be installed and qualified by trained metrology personnel following the CMM manufacturer's calibration and qualification procedures. Handle the ruby ball carefully during installation to avoid chipping, which will invalidate measurement accuracy. Ensure the M2 thread is engaged smoothly by hand before using any tool, and do not overtighten, as excessive torque can fracture the stylus stem or damage the probe head. Re-qualify the stylus in the CMM software after any installation or replacement.