11031118

The 11031118 hydraulic gear pump belongs to the GearMe Pumps series from Danfoss and supplies pressurized oil to actuators in automated hydraulic circuits. Its fixed displacement of 10.8 cm³ per revolution provides a constant volume with every shaft turn, which simplifies flow calculations in proportional valve systems. At its rated maximum speed the pump can deliver a theoretical flow of 43.2 l/min, giving designers predictable capacity for medium-duty machinery. A 3/4 GAS inlet port admits fluid from the reservoir, while a 1/2 GAS outlet port directs discharge to downstream components, both threaded sizes supporting standard hydraulic fittings. The rotating group has a moment of inertia of 38.4 ×10^-6 kg·m², so drive motors encounter only modest acceleration torque during start-up. The housing weighs 2.7 kg, light enough for manifold mounting without additional structural support.

The pump requires oil cleanliness not worse than ISO 4406 22/18/13 to limit abrasive wear on gears and bushings. It accepts fluid viscosities down to 10 mm²/s during normal operation, allowing the use of thin oils at elevated temperatures, while a cold-start limit of 1600 mm²/s prevents cavitation when thicker fluid is present at low ambient conditions. The unit can be started at ambient temperatures as low as –20 °C, maintaining seal integrity in outdoor equipment. Continuous service is permitted up to 80 °C oil temperature, and short peaks may reach 90 °C without damaging elastomers or reducing service life. These limits define the thermal and rheological envelope within which the 11031118 pump maintains reliable flow for automated hydraulic machinery.