Pneumatic motors and gearmotors run on circulating compressed air and provide rotational force in high temperature or hazardous environments which prohibit the use of electric motors. Air motors operate without sparking and can run in extreme temperatures and wet or corrosive environments. Air gearmotors transmit input torque from an air motor to an output shaft through a series of integrated gears, decreasing speed and increasing torque. Air motor accessories expand options for mounting location and position of air motors. Air motor and gearmotor replacement parts repair worn or damaged components in compatible air motors and gearmotors.