Danfoss Oil pump RSA95 R 070-3470

The Danfoss RSA95 R oil pump, SKU 070-3470, is a gear pump designed for pumping light fuels and kerosene. It supports both one-pipe and two-pipe operation modes and can be used as a transport or feed pump. The pump operates within a viscosity range of 1.3-75.0 cSt in the suction line, a pressure range of 0.055-0.21 mbar, and a maximum pressure of 4 bar in the suction/return line. Its shaft rotation speed is 1400-3450 min, with a maximum starting torque of 0.3 nm. The pump is suitable for ambient temperatures from -20 to 70 °C, storage temperatures from -25 to 70 °C, and fuel temperatures from -10 to 70 °C. The shaft is made of EN225 material.

Parts of this type are selected by matching the pump's specifications to the burner system, including the viscosity range, pressure range, and shaft rotation speed. The mounting form must align with the burner's flange and coupling, and the shaft standard (e.g., EN225) must match the drive. Before ordering, measure the shaft dimensions and compare the pump's pressure settings to the system requirements. Ensure the pump's filter area and cross-section are adequate for the fuel type and flow rate.

Common failures include shaft seal leaks, which cause fuel to drip or spray, and gear wear, leading to reduced pressure or flow. If the pump fails to prime, check for air leaks in the suction line or a clogged filter. Overheating may occur if the viscosity is too high or the pump is running dry. Unusual noises can indicate cavitation or bearing damage.