Renishaw A-5000-7521 Cmm Ball Stylus 5mm M4 Ruby

Product Description

The RENISHAW A-5000-7521 is a CMM ball stylus designed for use with coordinate measuring machines in dimensional inspection and quality control applications. Featuring a ruby ball contact point with a diameter of 5 mm and an overall length of 50 mm, this stylus threads into the probe via an M4 connection. The stainless steel stem provides rigidity and resistance to deflection during probing cycles. This type of stylus is installed and serviced by metrology technicians and quality control professionals working in manufacturing, aerospace, automotive, and precision machining environments.

This stylus is suited for use on CMM probing systems that require an M4-threaded stylus mount. It is appropriate for both manual and automated CMM inspection routines where a 5 mm ruby ball is specified. The ruby tip material is chosen for its hardness, spherical accuracy, and low friction characteristics, making it well-suited for repetitive contact measurement on a wide range of workpiece materials. Typical applications include surface probing, bore measurement, and feature inspection on production or inspection-floor CMMs.

Key Features

• 5 mm ruby ball contact point for precise, repeatable dimensional measurement
• 50 mm overall length suits a wide range of reach requirements on standard CMM setups
• M4 threaded connection for compatibility with M4-mount CMM probe systems
• Stainless steel stem for rigidity and resistance to bending during probing cycles
• Ruby tip material offers high hardness and low wear for extended service life

Compatibility

Designed as an OEM-style replacement stylus for CMM probing systems accepting M4-threaded ball styli.

Installation Notes

CMM styli are installed by metrology technicians following the probe manufacturer's stylus-change procedure. Power down or pause the CMM program and disengage the probe head before removing or installing a stylus. Thread the stylus into the M4 mount by hand to avoid cross-threading, then snug to the torque level specified in the probe manufacturer's documentation. Handle the ruby ball carefully to avoid chipping or contamination that could affect measurement accuracy.