Sandvik 77720317 Hydraulic Pump

Sandvik 77720317 Hydraulic Pump is a small gear type hydraulic pump employed in certain Sandvik and Tamrock underground drilling machines. This particular pump is generally referred to as a 14 to 14.4 cc gear pump and is mounted within the diesel engine and hydraulic system of the machine where it offers a consistent flow of hydraulic oil for the operation of machine mechanisms. Simple design of the pump makes it applicable for continuous operation where fixed displacement flow is required.

This particular pump is applied in certain Sandvik DD310-40 and Solo 5-5V underground drill rigs, along with some other Sandvik/Tamrock machines using the same pump reference. For the DD310-40 diesel engine assembly, the 77720317 pump is mounted alongside with another gear pump and this indicates its operation in multi-pump assembly rather than in a main variable displacement piston pump of the machine.

Gear pump supplies a constant amount of oil per revolution and is a perfect solution for auxiliary hydraulic circuits. When compared to a variable piston pump, its construction is simpler and requires less precise components. Nevertheless, it is crucial that all internal clearances are maintained properly as wear between gears, side plates and pump housing can increase internal leakage and reduce the actual flow delivered to the hydraulic system.

Rexton Hydraulic provides replacement, servicing and repairs of Sandvik hydraulic pumps employed on underground drill rigs and mining machinery. Our company will help you to handle the Sandvik 77720317 pump concerning supply, inspection, repairs, and relevant hydraulic spare parts. The repair process involves examining the condition of the gears, shafts, bearings or bushings, seals, housing surface, and internal clearances in order to establish the need to rebuild the pump or replace it.

Since this pump is a fixed-displacement gear pump, correct displacement and mounting are very essential. A pump with a different displacement that resembles the specified pump might fit physically, but it will produce an incorrect flow rate. To make sure that you order the right pump, we recommend verifying the part number 77720317, machine model, serial number, shaft and mounting pattern, and hydraulic ports.