M2 4mm SN ball, CF stem, L 75mm, EWL 75mm


A-5004-1973 | M2 Ruby Ball Styli | M2 | Carbon Fiber Stems | Renishaw

This M2 ruby ball styli has a silicon nitride ball material. It is stylus #A-5004-1973.

Silicon nitride possesses many similar properties to ruby. It is a very hard and wear-resistant ceramic which can be machined into very high precision spheres. It can also be polished to an extremely smooth surface finish. Silicon nitride does not have the attraction to aluminum and so does not exhibit the adhesive wear seen with ruby in similar applications. However, silicon nitride does show significant abrasive wear characteristics when scanning on steel surfaces and so its applications are best confined to aluminum. Carbon fiber styli weigh around 20% less than tungsten carbide styli, making it a suitable material for long styli. Its thermal stability is also advantageous, particularly with very long styli, which makes it suitable for use in a production environment.

Thread mount (DG) M2
Ball Diameter (DK) 4.0 mm
Length (L) 75.0 mm
Stem Diameter (DS) 2.0 mm
EWL (ML) 75.0 mm
Ball material Silicon Nitride
Stem material Carbon Fiber
Mass 0.75g

Weight 0.0016534669663866 oz