The compact radial piston air motor operates without rod or crank shaft. The radial arranged pistons travel along a curve and are controlled by the centre.
The static control shaft supplies the driving pistons with the necessary air. Air supply and release openings along the static shaft are periodically opened and closed by the rotation of the rotor to pressurise or release the pistons in an appropriate sequence.
Six of the twelve driving pistons are actively contributing to the torque at any moment. Once reaching the highest point on the curve, the air driving the piston is released by the control unit and the piston is forced into its lowest position.
The compact piston air motor's high torque is due to the power transmission of the pistons along the large external diameter of the curve. The friction connected with the travel along the curve is low due to the rollers at the tip of the pistons. This results in a long lifetime of the drive.
It is recommended to operate the drive within a speed range of 50-350 rpm.
Shaft dimensions can be adapted.
