A brake unit for a vehicle has a brake cylinder, a brake piston guided axially in the brake cylinder and a device for adjusting a clearance. The device has two first stops, which strike against each other when the brake unit is opened, and two second stops, which strike against each other when the brake unit is closed. One of the first stops is formed on a blocking element functionally connected to the brake piston. One of the second stops is formed on the blocking element. A blocking member is in engagement with the blocking element under the force of a pre-stressing spring such that the blocking element is blocked by the blocking member when the first stops strike and can continue to latch in relation to the blocking member under the force of the brake piston when the second stops strike.

A brake unit for a vehicle, in particular a rail vehicle, has a brake cylinder, a brake piston and a device for adjusting a clearance. The latter has two first stops that strike against each other when the brake unit is opened. One of the first stops is formed on a blocking element that is functionally connected to the brake piston. In order to be able to open the brake unit beyond the clearance, a blocking member is in engagement with the blocking element under the force of a pre-stressing spring. The blocking element is blocked by the blocking member when the first stops strike. Actuators displace the blocking member that is in engagement with the blocking element counter to a force of the pre-stressing spring into a position detached from the blocking element.

A masterbatch containing an organic base component and heat-expandable microspheres including a thermoplastic resin shell and a thermally vaporizable blowing agent encapsulated therein. The organic base component has a melting point not higher than the expansion-initiation temperature of the heat-expandable microspheres and a melt flow rate (MFR, g/10 mm) higher than 50 and not higher than 2200. A ratio of the heat-expandable microspheres ranges from 30 to 80 wt % of the total weight of the heat-expandable microspheres and the organic base component. Also disclosed is a molding composition, a foamed molded article manufactured by molding the molding composition and a weathers tripping.