About This Product; Performance Description; Product Description; Layout Of The Axial Piston Unit - Bosch 70 Series Instruction Manual

5 About this product

5.1 Performance description

An axial piston fixed motor converts hydrostatic flow into mechanical rotation.
It is designed for mobile and stationary applications.
Refer to data sheet 91071 and the order confirmation for the technical data,
operating conditions and operating limits of the axial piston unit.

5.2 Product description

The fixed motor is obtainable in the standard design A2FM and plug-in design
A2FE. The A2FM/A2FE is a fixed motor with an axial tapered piston rotary group
of bent-axis design for hydrostatic drives in open and closed circuits. For axial
piston units with bent-axis design, the pistons (2) are arranged at an angle to the
drive shaft (1). The pistons rest directly on the drive shaft where they generate a
pressure-dependent torque.
Open circuit In the open circuit, the hydraulic fluid flows from the reservoir to the hydraulic pump
from where it is transported to the hydraulic motor. From the hydraulic motor, the
hydraulic fluid flows directly back to the reservoir. The output direction of rotation of
the hydraulic motor can be changed with a directional valve.
Closed circuit
In the closed circuit, the hydraulic fluid flows from the hydraulic pump to the
hydraulic motor and from there directly back to the hydraulic pump. The output
direction of rotation of the hydraulic motor is changed, e.g., by reversing the flow
direction in the hydraulic pump.

5.2.1 layout of the axial piston unit

Fig. 2: layout of the A2FM Series 70
1 Drive shaft
2 Pistons
3 Cylinder
1
6
4 Control plate
5 Working ports
6 Drive shaft flange
RE 91071-01-B/03.2015, A2FM/A2FE Series 70, Bosch Rexroth AG
About this product
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