Hydraulic gear pump requirements

1, hydraulic gear pump installation, the base or bracket celebrate enough rigidity, hydraulic gear pump shaft in addition to the rotation generated by the torque, in principle, should not bear the role of other forces; the difference between the coupling shaft Axis is not greater than 0.05mm; hydraulic gear pump should be calibrated rotation direction, pay attention to the location of the oil inlet and outlet, large hole for the inlet. 2, the hydraulic system must be set safety valve, with the same device, the fuel tank must be dustproof, to prevent debris and other debris into the oil and cleaning regularly, suction pipe as short as possible, generally not more than 500mm, should be as far as possible. Less elbow, oil pipelines shall not leak. 3, the provisions of the use of working fluid: HC-8 # winter diesel engine oil, summer HC-11 # diesel engine oil, the working temperature of -10 degrees to 70 degrees. Installation requirements: 1, the pump shaft is not allowed to withstand radial forces and axial forces (such as: installation and connection of the spline sleeve length must not exceed the effective length of the active shaft of the spline, the power shaft end and the coupling sleeve and the gear pump Axis stretch spline finishing and the axial step any axial offset). Special circumstances such as the presence of radial force and axial force conditions, please contact the company special order. 2, the pump shaft and the prime mover output shaft installation coaxiality shall not be greater than 0.05mm, and the pump mounting bracket and the vertical plane shall not exceed 0.05mm. Coupling at both ends of the connection should also ensure that coaxial within 0.05mm. 3, the suction height of the pump is not more than 0.5m, and the inlet pipe diameter should ensure that the flow rate ≤ 2m / s, that is, the inlet pipe diameter d ≥ 3.25 (mm), where Q is the pump inlet flow Q N. 4, the pump inlet pipe and flange should not leak.