With the Double Acting brake unit, type RWD, the brake is applied by supplying air to port AA. To release the break, air must be removed from port AA and applied to port BB. The clamping force of this unit is directly proportioned to the supply pressure at port AA. With Single Acting brake unit, type RWS, the brake is normally applied to the piston-rod with a campling force as shown in the table. To release the brake, air is supplied to port BB. In both DA and SA versions the brake may be applied at any point of the cylinder stroke, in every direction piston rod.
