Hydraulic motors come in gear, vane, radial piston, and axial piston forms. Gear and vane motors are the simplest hydraulic motors. They operate at high speeds and generate high torque. Radial piston motors use a cam and pistons to generate high starting torque, while axial piston motors use pistons, a cylinder block, and a swash plate to generate high torque. Hydraulic motor accessories enhance motor performance and include replacement parts, mounting brackets, and mounting base plates.