Chapter 7 Tractor's PTO System Section 2 PTO Device Power take-off device is a working device that transmit part or all of the engine power to the farm machinery in the manner of rotation mechanical energy.It includes power take-off shaft and power take-off belt pulley. 1.Power Take-off Shaft PTO shaft are generally arranged in the back of the tractors, but there are some also arranged in the front.According to their rotating speed,they can be divided into the standard type PTO shaft and the synchronous PTO shaft. Figure 7-6 Synchronous PTO shaft 1.1 Synchronous PTO Shaft 1.Main clutch 2.PTO shaft 3.2nd shaft of gearbox 业机械电子工程 Automobile and Tractor Northwest A&F UniversityAutomobile and Tractor Northwest A&F University Chapter 7 Tractor’s PTO System Power take-off device is a working device that transmit part or all of the engine power to the farm machinery in the manner of rotation mechanical energy. It includes power take-off shaft and power take-off belt pulley. 1. Power Take-off Shaft PTO shaft are generally arranged in the back of the tractors, but there are some also arranged in the front. According to their rotating speed, they can be divided into the standard type PTO shaft and the synchronous PTO shaft. 1.1 Synchronous PTO Shaft Figure 7-6 Synchronous PTO shaft 1. Main clutch 2. PTO shaft 3. 2nd shaft of gearbox Section 2 PTO Device