Abstract: A brake device has a housing in two parts releasably connected together by bolts. Co-operating pressure fluid passages in the two housing parts communicate pressure fluid from a source to actuators within the housing, and include separable plug and socket connectors located on the respective housing parts so that separation of the housing parts effects disconnection of the actuators from the pressure fluid source. A non-return valve is arranged to close on separation of the housing parts and to be opened again by the plug connector. An electrical connection to an electrically powered cooling fan can be similarly broken when the housing parts are separated.

Abstract: A brake for a braking shaft has a housing containing a brake disc (20) carried by the shaft and brake assemblies comprising fluid operated actuators (31) for brake pads (30) engageable with one side of the brake disc. The actuators are mounted on a cover portion (2) which can be hinged down to facilitate servicing of the brake assemblies. The cover portion has integrally formed locating elements for the actuators and guides for the brake pads (40,41,42,44). The brake disc (20) can slide off the shaft to allow access to passive brake pads acting on the other side of the brake disc.