Renishaw precision styli selection guide

A technical guide to stylus geometry, materials, length, stiffness, scanning considerations and calibration for precision measurement.

Detailed technical information

This guide explains how to select precision styli by geometry, material, length, stiffness and measurement access. It covers straight, star, disc, cylinder and hemispherical configurations, plus the influence of ball, stem and connecting-component materials. For scanning applications, inspect ball wear and contamination and calibrate the stylus in the orientations and conditions used for measurement. Confirm the probe, thread, reach and access direction before final selection.

KEY FEATURES

Key features

Configuration for the feature

Choose straight, star, disc, cylinder or hemispherical configurations to suit the feature and access direction.

Material and stiffness

Review how ball, stem and connecting materials, plus overall length, affect deflection, thermal change and stability.

Scanning and calibration

Check ball wear and contamination, then calibrate in the orientations and conditions used for measurement.

SPECIFICATIONS

Key specifications

Selection criteria	Geometry · Ball diameter · Effective working length · Overall length · Stem material · Thread
Representative types	Straight · Star · Disc · Cylinder · Hemispherical
Operating checks	Stiffness · Thermal behaviour · Wear · Contamination · Calibration orientation

Specifications are summarized from the attached catalogue. Confirm the current configuration and specification with ADMT before selection.