Grooved Shaft

Grooved shafts are used in linear technology to transmit torques with simultaneous linear motion. They serve as a torsionally rigid linear guide or as a drive shaft with a linearly displaceable input or output.

In the simplest case, this is a shaft with one or more rectangular longitudinal grooves and a sliding piece. This engages in the grooves with a negative contour and thus ensures torque transmission.

Rolling bearing systems are used for backlash-free transmission of high torques with low displacement forces. In this case, the grooved or splined shaft has ground raceways in which the balls of the associated torque nut engage according to the recirculating ball principle, thus producing a torsionally rigid linear guide.

Put simply, in terms of the operating principle and performance data, this is a "round" profiled rail guide.