axial piston hydraulic motor SAE - Sunfab Hydraulics - #9

Text version of the page

Temperatures/Housing cooling Q Excessive system temperature reduces the life of the shaft seal and can lower the oil viscosity below the recommended level. A system temperature of 60 °C and a drain flow temperature of 90 °C must not be exceeded. Qflush Counter pressure valve Cooling/flushing of the motor housing can be needed to keep the drain flow temperature at an acceptable level. Flushing l/min 2-8 4-10 6-12 Cont. RPM ≥ 2800 ≥ 2500 ≥ 2200 Counter pressure valve Suggested flow: Motor SCM 012-034 040-064 084-130 Qflush Flushing valve Qflush Housing flushing can be built up with the help of a flushing valve or taken directly from the return line. When the return pressure is too low this is compensated for by a counter pressure valve. The tank line is connected to the highest point as in the figure. Simplified circuits Installation • The motor housing should be filled with oil to at least 50% before starting. • The drainage pipe should be connected to topmost drainage outlet. • The other end of the pipe should be connected to the oil tank at a point below the oil level. 9 (11)