Renishaw A-2008-0384 Cmm Disc Stylus 19mm Ball 22mm Oal

Product Description

The RENISHAW A-2008-0384 is a disc-style stylus designed for coordinate measuring machine (CMM) applications. It features a 19 mm diameter disc ball and a 22 mm overall length, combining a ceramic contact point with a stainless steel stem. This stylus mounts to CMM probe heads to enable accurate measurement of undercuts, grooves, and features that standard ball styli cannot reach. Metrology technicians and CMM programmers specify disc styli when part geometry requires lateral or radial contact access. The ceramic point provides low thermal expansion and wear resistance for repeatable touch-trigger or scanning measurement cycles.

This disc stylus is used in precision metrology environments including quality control labs, aerospace inspection, and precision machining shops. It is suited for measuring internal grooves, turbine blade profiles, and recessed features on turned or milled components. The 19 mm disc diameter provides a broad radial contact surface, while the compact 22 mm overall length keeps the stylus assembly close to the probe head, reducing bending moment and maintaining measurement accuracy.

Key Features

• 19 mm disc ball diameter for radial and undercut feature measurement
• 22 mm overall length for compact, low-deflection probe assembly
• Ceramic contact point for low thermal expansion and long wear life
• Stainless steel stem for rigidity and corrosion resistance
• Designed for touch-trigger and scanning CMM probe systems

Compatibility

Designed as an OEM-style replacement disc stylus for CMM probe systems accepting standard stylus thread connections. Consult your CMM probe documentation to confirm thread size and seating compatibility before installation.

Installation Notes

CMM styli should be installed by a qualified metrology technician following the probe manufacturer's torque and thread engagement guidelines. Clean the stylus seat and probe thread with a lint-free cloth before installation to prevent contamination that could affect seating accuracy. Avoid overtightening, as this can damage the stylus thread or alter the effective stylus length. Re-qualify the probe after any stylus change using the CMM's standard qualification routine.