Renishaw M3 3 mm Silicon Nitride Ball Stylus - Tungsten Carbide Stem (L 50 mm EWL 46mm) | A-5004-1199 | RenishawProbe

Description

These are the simplest form of stylus, incorporating highly sphericalindustrial ruby balls and a choice of stem material.Ruby is an extremely hard material and hence stylus wear isminimised. It is also of low density, keeping tip mass to a minimum,which avoids unwanted probe triggers caused by machine motionor vibration.Mounted on stems made from a range of materials – stainlesssteel, tungsten carbide, ceramic and a specialised carbon fibrematerial, “Renishaw GF” – these simple ruby ball styli are suitablefor most inspection applications.Each stylus has an effective working length (EWL) which is thepenetration that can be achieved by the ball before the stem foulsagainst the feature.The size of the ball and the EWL of the stylus chosen are dictated bythe size of the feature to be inspected. However, keeping the stylusball as large as possible and the stem as short as possible will ensuremaximum ball/stem clearance, whilst providing a greater yet still rigidEWL. Using larger ruby balls also reduces the effect of the surfacefinish of the component being inspected.Probing with very long stylus/extension combinations is notrecommended with standard kinematic touch trigger probes as therigidity is reduced and accuracy lost due to stylus bending. This is notthe case with other types of probe such as those with strain gaugetechnology, as their very low trigger forces permit the use of longstylus/extension combinations without a significant loss of accuracy.