Which type of displacement motor offers fixed characteristics regarding output?

The fixed displacement motor is designed to deliver a consistent volume of fluid with each rotation, meaning it converts hydraulic energy to mechanical energy without any changes in the amount of fluid displaced per revolution. This characteristic makes it suitable for applications where a constant speed or torque is required, ensuring predictable performance. Fixed displacement motors are typically simpler in design, more reliable, and easier to integrate into systems where variable outputs are not needed.

In contrast, other types of motors, such as the swashplate motor, variable displacement motor, and axial piston motor, can adjust their output based on changing system demands. This adaptability allows for variation in speed and torque, but it also introduces complexity in design and control. The fixed displacement motor's inability to change its output characteristics makes it ideal in situations where consistent operational parameters are paramount.