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A split shaft PTO is mounted to the truck's drive shaft to provide power to the PTO. Such a unit is an additional gearbox that separates the vehicle's drive shaft into two parts: The gearbox-facing shaft which will transmit the power of the engine to the split shaft PTO; The axle-facing shaft which transmit the propelling power to the axle.
A hydraulic system was offered from type 411a onwards, but was not fitted as standard. It consists of six main components: a gear oil pump, an oil tank, two hydraulic cylinders and two control units with operating levers. The hydraulic pump has a maximum working pressure of 150 bar. The oil tank at the front of the Unimog has a capacity of 8.5 ...
The hydraulic pump is a gear-driven Westinghouse Typ 5 P 41-13 and initially had an operating pressure of 150 bar and a delivery rate of 32 litre per minute, later these figures were increased to 40 litre per minute and 180 bar. In the front part of the Unimog, the hydraulic oil reservoir holds the operating fluid, the filling quantity of the ...
A PTO or power take-off unit has the same driven components as a petrol or diesel driven unit except that the unit takes mechanical power from the vehicles engine via a specially fitted power take off unit which is usually fitted to the vehicle transmission. The power is usually transmitted via a drive shaft or hydraulic pump and motor.
If a hydraulic rotary pump with the displacement 10 cc/rev is connected to a hydraulic rotary motor with 100 cc/rev, the shaft torque required to drive the pump is one-tenth of the torque then available at the motor shaft, but the shaft speed (rev/min) for the motor is also only one-tenth of the pump shaft speed.
Fluid flow in an external gear pump. A hydraulic pump is a mechanical source of power that converts mechanical power into hydraulic energy (hydrostatic energy i.e. flow, pressure). Hydraulic pumps are used in hydraulic drive systems and can be hydrostatic or hydrodynamic. They generate flow with enough power to overcome pressure induced by a ...
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