Renishaw A-5000-8156 Cmm Ball Stylus 6mm Ruby M4

Product Description

The RENISHAW A-5000-8156 is a CMM ball stylus designed for coordinate measuring machine probing applications. It features a 6 mm ruby ball tip mounted on a ceramic stem with an M4 threaded shank, giving it an overall length of 150 mm (approximately 5.906 inches). The ruby ball provides excellent hardness and wear resistance for repeatable contact measurements. The ceramic stem minimizes thermal expansion and deflection during probing cycles. This stylus is installed by metrology technicians and CMM operators in precision measurement environments.

This stylus is suited for use in dimensional inspection applications where accurate surface contact measurement is required. The M4 thread allows it to mount directly to compatible Renishaw probe bodies and extension modules. It is commonly used in both production-floor CMM setups and dedicated metrology labs for measuring machined components, tooling, and assemblies. The 150 mm overall length makes it appropriate for applications requiring extended reach into bores, pockets, or recessed features.

Key Features

• 6 mm ruby ball tip for high wear resistance and consistent contact point geometry
• Ceramic stem reduces thermal expansion effects and styli deflection
• M4 threaded shank for direct mounting to compatible probe bodies and extensions
• 150 mm overall length provides extended reach for recessed or deep-feature measurement
• Lightweight construction minimizes probe head loading during high-speed scanning

Compatibility

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

Installation Notes

CMM styli are installed and qualified by metrology technicians or CMM programmers. Before changing a stylus, ensure the CMM is in a safe parked position and the probe head is stationary. Use the appropriate torque-limiting stylus tool when threading the M4 shank to avoid damaging the probe body threads. After installation, run a full stylus qualification routine on the CMM controller before using the new stylus for measurement.