Sandvik 77720322 16cc Gear Hydraulic Pump

Sandvik 77720322 16cc Gear Hydraulic Pump is the small-size fixed displacement pump that is used in some Sandvik and Tamrock drilling machines underground. It is known as 16 cm³/rev gear pump and is designed for those purposes where it is needed to use the pump which provides the continuous hydraulic oil flow for the support of the machine operations. The simplicity of the design and durability make this pump a good choice for using in such purposes.

It is used in the underground drilling machine - Sandvik / Tamrock Solo 5-5V drill rig. This pump is the part of the machine's hydraulic system. The fixed displacement pump gives a constant volume of oil per each revolution, so it is ideal for the auxiliary hydraulic circuits where the variable flow is not necessary. (drill-parts.com)

In comparison with the axial piston pump, the gear pump consists of the simpler structure and contains fewer elements. But it is still important to provide the right clearances in the pump. The wear of the gears, bushings and pump housing increases the leakage and reduces the hydraulic flow rate, but the pump can work normally.

As the Sandvik 77720322 Hydraulic Pump deteriorates, the operator may encounter slow operation of auxiliary components, poor hydraulic responsiveness, high noise levels from the pump, overheating and leaking near the shaft and pump housing. The pump performance under load may be weakened if the internal clearances get outside of the correct operating range. It is essential to inspect these symptoms in time to prevent unnecessary loads on other hydraulic components.

Hydraulic oil cleanliness is a crucial factor that affects the lifespan of a gear pump. The contamination of hydraulic oil will damage the gear surfaces and pump housing, and insufficient suction will create cavitation and noise. Prior to installing a new hydraulic pump, one should ensure that there are no problems with hydraulic oil, filters, suction line, fittings and valves.

Rexton Hydraulic supplies, repairs and provides servicing for Sandvik hydraulic pumps used in underground drilling and mining machinery. Our specialists will be able to help with the Sandvik 77720322 hydraulic pump installation, inspection, repairing and supply of spare hydraulic parts. While performing repair work, it is possible to check the wear of pump components such as gears, shafts, bearings or bushings, seals, housing surfaces and internal clearances.