Renishaw A-5003-0233 Cmm Ball Stylus 4mm Ruby M4

Product Description

The RENISHAW A-5003-0233 is a CMM ball stylus designed for use with coordinate measuring machines in dimensional inspection and metrology applications. It features a 4 mm ruby ball tip mounted on a ceramic stem with an M4 threaded shank, giving a 50 mm overall length. Ruby is the standard choice for CMM probing due to its hardness and resistance to wear, which helps maintain consistent measurement accuracy over repeated contact cycles. This stylus is installed by metrology technicians and quality control professionals who require reliable, repeatable point contact with workpiece surfaces.

This stylus is suited for touch-trigger and scanning probe heads on CMM equipment in both production and inspection environments. The M4 thread is a common connection standard across many CMM stylus systems, making this a practical replacement or supplementary stylus for labs running high-volume dimensional checks. The ceramic stem reduces mass and minimizes thermal expansion effects, which is important in temperature-controlled metrology rooms where measurement uncertainty must be kept low.

Key Features

• 4 mm ruby ball tip for high wear resistance and consistent contact geometry
• Ceramic stem reduces mass and limits thermal growth during measurement cycles
• 50 mm overall length for reach into moderate-depth features
• M4 threaded shank compatible with standard CMM stylus holders and extension bars
• Single-piece design supports straightforward installation and stylus change routines

Compatibility

Designed as an OEM-style replacement stylus for CMM probe systems that accept M4 threaded styli.

Installation Notes

Installation is performed by trained CMM operators or metrology technicians. Before changing a stylus, power down or pause the CMM and retract the probe head to a safe position to avoid damaging the probe mechanism. Thread the stylus into the holder or extension bar by hand to avoid cross-threading, then snug with the appropriate stylus wrench per the probe manufacturer guidance. After installation, perform a full stylus qualification routine on the CMM before taking any production measurements.