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A4... with HS5E(V)(L) control system Series 1x and 30 | About this product
Open circuit
Closed circuit
Bosch Rexroth AG, RE 92076-01-B/2021-04-22
5 About this product
5.1 Performance description
The HS5E(V)(L) control system is used for electro-hydraulic control of the swivel
angle, pressure, and torque limitation of an axial piston unit. It is designed for
stationary applications.
Refer to the data sheet 92076 and the information contained in this document and
the order confirmation for the technical data, operating conditions and operating
limits of the HS5E(V)(L) control system.
5.2 Product description
The HS5E(V)(L) control system is based on an axial piston variable pump in
swashplate design for hydrostatic drives. The HS5E control system is intended for
the open and the closed circuit and the HS5EV control system only for the open
circuit. The flow is proportional to the drive speed and the displacement. The flow
can be smoothly changed by adjusting the swashplate.
In the open circuit, the hydraulic fluid flows from the reservoir to the variable pump
and is transported from there to the consumer via a directional valve. From the
consumer, the hydraulic fluid flows back to the reservoir via the directional valve.
In the closed circuit, the hydraulic fluid flows from the variable pump to the
consumer and from there directly back to the variable pump. The movement of the
consumer is changed, e.g., by reversing the flow direction in the variable pump.
5.2.1 Axial piston unit layout
4
2
3
Fig. 2: Cutaway diagram of A4VSO....HS5E and HS5EV
(HS5E pilot control valve shown rotated by 90°)
1 HS5E pilot control valve
2 Stroking piston
3 Swashplate
4 Swivel angle sensor
1
5
5 Stroking piston for
HS5E
6
6 Stroking piston for
HS5EV
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