Huade brand A2FO fixed pump is suitable for hydrostatic drives in an open circuit. Based on the concept of energy saving and environmental protection, Huade Hydraulic works hard to provide green axial piston fixed pump. A2FO series pump has features of small size, high efficiency and energy saving, which is an ideal choice for customer.
■Shaft seal…Permissible pressure loading
The service life of the shaft seal is influenced by the speed of the axial piston unit and the case drain pressure (case pressure).
The mean differential pressure of 2 bar between the case and the ambient pressure may not be continuously exceeded at normal operating temperature.
For a higher differential pressure at reduced speed, see diagram.
Momentary pressure spikes (t < 0.1 s) of up to 10 bar are permitted. The service life of the shaft seal decreases with an increase in the frequency of pressure spikes.
The case pressure must be equal to or higher than the ambient pressure.
NOTE: The values are valid for an ambient pressure Pabs = 1 bar
The FKM shaft seal may be used for case drain temperatures from -25℃ to +115℃
For application cases below -25 °C, an NBR shaft seal is required(permissible temperature range: -40 °C to +90 °C). State NBR shaft seal in plain text when ordering. Please contact us.
For long service life and use with HF hydraulic fluids. Identical external dimensions as motor with standard bearings. Subsequent conversion to long-life bearings is possible.
Bearing and case flushing via port U is recommended.
Sizes 5~500 Series 6 Nominal pressure 400 bar Maximum pressure 450 bar
