M3 XXT, 1/2 star styli 180° with clamping adapter, ruby sphere, carbon fibre shaft
1/2 star styli consist of 2 opposite styli which are at an angle of 180° to each other. They are fastened to standard extensions via an integrated horizontal clamping adapter and are orientated and clamped via a clamping screw (not included in the scope of delivery). The application is identical to standard T-styli, but because of the clamping adapter easier to adjust.
Carbon fiber shafts represent an optimum combination of stiffness, weight, and thermal linear expansion. This makes them particularly suitable for long styli and demanding measurement tasks, such as in production with constantly changing ambient temperatures. They are also ideal for magnetic applications. The straight shaft is the simplest stylus design and the one with the longest usable length. The full shaft length can be used as measuring length. Carbon fibre shafts have the best thermal behaviour and the lowest weight, but a little less stiffness.
Ruby styli are the standard for almost all applications and are available in a variety of different diameters. Another advantage is that ruby spheres can be produced in very small diameters (from 0.12 mm). On the other hand, ruby has weaknesses at the continuous scanning of certain materials and surfaces. With extremely soft materials, e.g. aluminum, material from the workpiece can be deposited on the ruby surface (material deposit). Very hard and rough surfaces, e.g. castings, on the other hand, cause abrasion of the sphere (material removal). The shape of the sphere changes as a result and loses accuracy.
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