What is the meaning of the PTO power transfer “standard operating speed’?
- Correct answer: It is the RPM of the power transfer exit and of its drive shaft.
- The RPM in which the gearbox exit shaft rotates.
- The RPM of the oil pump that moves the power transfer.
- The RPM of the engine itself (the “fly wheel” exit).
Why this is the answer
The correct answer in the official bank: It is the RPM of the power transfer exit and of its drive shaft.
The PTO standard operating speed is the RPM of the power transfer exit and of its drive shaft, meaning the speed at which the attached implement actually receives power. Engine RPM and gearbox output shaft speed are different values. The driver sets the engine so that the PTO shaft turns at the standard speed the implement was designed for, because running it at another speed can damage the equipment and create danger.