Harken offers 1-, 2-, and 3-speed pumps for hydraulic systems. Our 2- and 3-speed pumps deliver oil faster and more efficiently than other pumps on the market. When a preset point is reached, the pump automatically shifts to the next speed. The 1-speed pump is a simpler alternative, but features the same high-quality components as the other systems. Use 1- and 2-speed pumps for smaller and midsize hydraulic systems; 3-speed pumps on systems with high-volume, high-pressure requirements. Pressure relief on 1- and 2-speed pumps is factory-set to a maximum of 5000 psi. Mounting patterns for all pumps are identical, making upgrades easy.
Bolt holes in the hardcoat-anodized 6061-T6 aluminum pump housing are threaded with stainless steel inserts to prevent corrosion around the stainless bolts. An optional adhered isolation plate improves load distribution even more by transferring torque directly to the mounting surface rather than the bolt holes. Piston shafts and rocker arms are machined from 17-4 PH stainless steel. Pumps have 7-degree splined shafts to ensure a tight fit and to allow the handle to be mounted at the sailor’s preferred angle.