Closed Loop Hydrostatic Transmissions

Bosch Rexroth - AA4VG Axial Piston Pump

Model AA4VG
Variable Displacement Axial Piston Pump

Closed circuit
Sizes 28 . . . 250
Series 3
Nominal pressure 5800 PSI
Peak pressure 6500 PSI

Features

Variable displacement axial piston pump of swashplate design for hydrostatic closed circuit transmissions
Flow is proportional to drive speed and displacement and is infinitely variable
Output flow increases with swivel angle from 0 to its maximum value
Swivelling the pump over center smoothly changes the direction of flow
Availability of a highly adaptable range of control and regulating devices
The pump is equipped with two pressure relief valves on the high pressure ports to protect the hydrostatic transmission (pump and motor) from overloads

For more detailed information view the Bosch Rexroth AA4VG Axial Piston Pump page from the Womack 365 Product Catalog.

Bosch Rexroth - AA4CSG Axial Piston Pump

Model AA4CSG

Compact Axial Piston Pump

Closed loop circuit
Sizes 250 . . . 750
Series 3
Nominal pressure 5100 PSI
Peak pressure 5800 PSI

Features

Axial piston pump-variable displacement, swashplate design for hydrostatic drives in closed circuits
The flow is proportional in input speed and displacement. It can be infinitely varied by adjustment of the swashplate
The necessary boostpump and all required control valves are integrated
One common auxiliary pump for boost and EP-control pressure
Compact design (short in length)
Favorable power to weight ratio
Low noise level
Long service life
High efficiency
New electro-hydr. control EP with proportional solenoid

For more detailed information view the Bosch Rexroth AA4CSG Axial Piston Pump page from the Womack 365 Product Catalog.

Bosch Rexroth - AA10VG Axial Piston Pump

Model AA10VG
Variable Displacement Axial Piston Pump

Series 10, Size 18 . . . 63
Nominal pressure 4350 psi (300 bar)
Peak pressure 5100 psi (350 bar)
Closed circuit

Features

Variable axial piston pump of swashplate design for hydrostatic closed circuit transmission
Flow is proportional to drive speed and displacement and is infinitely variable
Output flow increases with the swivel angle of the swashplate from 0 to its maximum value
Flow direction changes smoothly when the swashplate is moved through the neutral position
A wide range of highly adaptable control devices is available for different control and regulating functions
The pump is equipped with two pressure relief valves on the high pressure ports to protect the hydrostatic transmission (pump and motor) from overload
The pressure relief valves also function as boost valves
The integrated boost pump acts as a feed and control oil pump
The maximum boost pressure is limited by a built-in boost pressure relief valve

For more detailed information view the Bosch Rexroth AA10VG Axial Piston Pump page from the Womack 365 Product Catalog.