Product Description
Renishaw M3 30 mm Ceramic Disk Stylus (1.5mm depth)
Disk Styli
These styli are used to probe undercuts and grooves within bores which may be inaccessible to star styli. They are ‘sections’ of highly spherical balls and are available in various diameters and thicknesses. Full rotational adjustment and the ability to add a center stylus are features of the Renishaw range of disc styli that make them particularly flexible and easy to use.
Probing with the ‘spherical edge’ of a simple disc is effectively the same as probing on or about the equator of a large stylus ball. However, only a small area of this ball surface is available for contact and hence thinner discs require careful angular alignment in order to ensure correct contact with the feature being probed.
A simple disc requires datuming for only one diameter (usually in a ring gauge), but limits effective probing to only X and Y directions.
Adding a ‘radius end roller’ allows you to datum and hence probe in the Z direction, provided that the center of the ‘radius end roller’ extends beyond the diameter of the probe. The ‘radius end roller’ can be datumed on a sphere or a slip gauge. Rotating and locking the disc about its center axis allows the ‘radius end roller’ to be positioned to suit the application.
Discs may also have a threaded center to allow the fixing of a center stylus, giving the additional flexibility of probing the bottom of deep bores (where access for the disc may be limited).
Ceramic Material
For ball diameters greater than 3 mm, and lengths over 30 mm, ceramic stems offer stiffness comparable to steel but are significantly lighter than tungsten carbide. Ceramic stemmed styli can also offer additional crash protection to your probe as the stem will shatter in a collision.
Part number: A-5003-7098
