When installing a hydraulic gear pump, the base or bracket should have sufficient stiffness so that, in addition to the torsional force generated by shaft rotation, the hydraulic gear pump should not in principle be subjected to other forces;the different axes between the connecting shafts Not larger than 0.05mm;the hydraulic gear pump should operate in the calibrated direction of rotation. Pay attention to the location of the oil inlet and outlet. The large hole is the oil inlet.