Abstract: A spring applied hydraulic release caliper brake includes a housing carrying springs acting on a piston in a default position. The housing further carries an adjuster, with an outer portion of the adjuster being in direct contact with an outermost spring of the springs. A released position of the brake includes the piston being in contact with the adjuster. The adjuster is adapted to rotate a predetermined amount to thereby cause the adjuster to act on the springs. This removes an amount of clearance between the piston and a stator, such that the removal of the amount of clearance becomes a new default position for the spring applied hydraulic release caliper brake.

Abstract: A brake (10) for applying a braking force to a shaft includes a housing (11) which defines a chamber (17). The housing (11) includes a plurality of depressions (19) which are circumferentially spaced around an axis (22). A rotatable actuator (40) is received in the chamber (17) and includes a plurality of depressions (43) circumferentially spaced around the axis (22). The housing depressions (19) face the rotatable actuator depressions (43) and each matching pair of depressions receive a ball (23) therebetween. A spring (50) under compression is positioned centrally about the axis (22). A bearing (56) is interposed between the rotatable actuator (40) and disc assembly (70). When the rotatable actuator (40) is rotated, the balls (23) roll along the depressions (19, 43) to gradually shallower portions thereof. This in turn moves the rotatable actuator (40) axially away from the housing (11), thereby applying a braking force to the shaft.