Disclosed is a friction assembly for a railway disc brake system for railway rolling stock, the friction assembly including a brake head on the one hand, and on the other hand at least one wear plate made of friction material including a first face which is the friction face, and a second face opposite to the first face, the wear plate being suitable for being integrally secured to the brake head, the friction assembly further including a part able to collect the particles emitted by the wear plate. The part includes a connection able to engage with a fastening element serving to fasten the friction assembly to a brake shoe in such a way that the part is held in a position of being integrally secured to the brake head when the fastening element is fastening the friction assembly to the brake shoe.

A pressure-medium-actuated brake cylinder of a rail vehicle has a housing, a translationally movable brake piston rod extending through a bore in a housing base, a guide ring which is received in the bore, encloses the brake piston rod and is intended for guiding the brake piston rod in the bore, and at least one sealing ring which is received in the bore, encloses the brake piston rod and is intended for sealing an interior of the housing with respect to a space outside the housing, wherein the guide ring and the at least one sealing ring are designed as a guide and sealing ring combined to form a structural unit.

The aim of the invention is to provide a running gear with a mount for a brake linkage on a bogie, wherein the mount has a long service life and requires little maintenance. The transmission of shocks and vibrations between the brake linkage and the bogie is reduced, and the bogie and the brake linkage are electrically insulated from each other. A running gear for a rail vehicle including a bogie and a brake linkage is proposed, having at least one bearing element. The brake linkage is mounted on the bogie and/or is connected to the bogie by means of the at least one bearing element, and the at least one bearing element has a plastic and/or consists of a plastic.

A brake disc for a railway vehicle includes: a disc plate portion that has a sliding portion of a front face; a plurality of radial fins that are provided on the rear face of a disc plate portion, and that have a shape that extends in the radial direction of the disc plate portion; and a circumferential rib that is provided between each pair of adjacent radial fins, and that has a shape that extends in the circumferential direction of the disc plate portion. A flow path for air is formed between the pair of radial fins, and the flow path for air is narrowed by the circumferential rib. On the circumferential rib, a gradual slope for suppressing fluctuations in an airflow that passes between the pair of radial fins is provided from a base part to a top part.

A friction-braking apparatus for a transportation system, having at least one caliper, at least one piston structured and arranged to move the at least one caliper; and at least one brake pad arranged on the at least one caliper. The at least one caliper is structured and arranged to selectively move the at least one brake pad into engagement with at least one rail of the transportation system.

A braking and/or clamping device for a shaft guided in relation to a basic body, includes an actuating assembly (10) and a shaft-coupling assembly (80). The actuating assembly comprises a split housing (11) which has two bending plates (15, 16) which can bulge elastically in certain regions. The bending plates each have gripper jaws (23, 24) with frictional surfaces (31, 32). A sealed pressure chamber (37), which can be filled with a pressure medium, is situated between the bending plates. Parts of a shaft-coupling assembly project between the clamping zones, said parts establishing the linking to the braked or clamped shaft. When the pressure in the pressure chamber is relieved, the frictional surfaces of the actuating assembly can be applied to the frictional surfaces of the shaft-coupling assembly, thereby providing the braking and/or clamping force.

A parking brake unit of a brake device for braking a wheel includes a first piston having a first engaging part on an inner circumference thereof, the first piston being configured to move in first direction by pressure of the hydraulic fluid supplied to a pressure chamber defined in the back thereof, a first biasing member configured to bias the first piston in second direction, opposite to the first direction, a second piston slidably provided on the inner circumference of the first piston, the second piston having a second engaging part on an outer circumference thereof, and an engaging member configured to cause the first engaging part and the second engaging part to engage with each other, in which the second piston causes a brake lining to move in direction bringing the wheel to be in a braking state, when the first piston moves in the second direction.

A brake apparatus includes a coupling member configured to couple one end parts of a pair of link arms, an actuator mounted on the coupling member and configured to advance and retract an output member, a lever rotatably coupled to the output member and configured to rotate by advancing and retracting movements of the output member and a booster unit provided on at least one of the one end parts of the pair of link arms and configured to rotate the link arms with supporting portions as fulcrums by boosting a force transmitted by the rotation of the lever.

In a disc brake apparatus, a parallelism maintaining control mechanism for pressing lining surfaces of pads against a disc rotor in parallel includes a pressure plate which is brought into abutment with a pad holding member, a link arm having a fixing shaft projecting from a caliper body in parallel to a side surface of a disc rotor, a moving shaft disposed in parallel to the fixing shaft and pivotally supporting the pressure plate, joint members which connect the fixing shaft and the moving shaft in parallel to each other and a connecting shaft for pivotally connecting the joint members to each other, and a spring member for pressing the pressure plate against the pad holding member.

A self-energizing brake caliper includes a caliper bracket fixed to a body of a braked device; a first caliper arm; and a second caliper arm. The first caliper arm comprises a first end which is rotatably connected to the caliper bracket with respect to a first rotation axis extending in the radial direction of a wheel and a second end which is rotatably connected to the inboard brake pad at a first position with respect to a second rotation axis which is parallel with the first rotation axis. The second caliper arm comprises a first end which is rotatably connected to the caliper bracket with respect to a third rotation axis extending in the radial direction of the wheel and a second end which is rotatably connected to the outboard brake pad at a second position with respect to a fourth rotation axis which is parallel with the third rotation axis.