Wet brake

A wet brake for restraining rotation of a rotary shaft, the wet brake comprising:

• a housing having a recess that is configured to receive a mounted object, the housing accommodating the rotary shaft;
• a plurality of non-rotatable brake discs disposed in engagement with the housing;
• a plurality of rotatable brake discs disposed in engagement with an outer peripheral surface of the rotary shaft, the rotatable brake discs being interleaved with the non-rotatable brake discs in an axial direction of the rotary shaft and cooperating with the non-rotatable brake discs to form a disc stack;
• a parking lever;
• a piston accommodated in the housing and configured to be pushed by the parking lever toward the non-rotatable and the rotatable brake discs;
• a plate accommodated in the housing and disposed in contact with one of the non-rotatable brake discs or one of the rotatable brake discs, the non-rotatable brake disc or the rotatable brake disc forming one end of the disc stack adjacent to the piston;
• and
• a connector having a cylindrical shape and accommodated in the housing, the connector being disposed at a position between the piston and the plate, wherein
• the recess is formed in an outer peripheral surface of the housing at a position corresponding to the position of the connector, and
• an outer diameter of the connector is smaller than an outer diameter of the piston.