'Bj' hand pumps provide a source of portable hydraulic power. They can be used in remote areas and have wide range of applications in bridge construction, shipyards, mines, industrial testing equipments etc.
Single speed hand pumps are generally used with single acting cylinders where oil volume required is low to complete the stroke of ram and cycle time is not a constraint.
Two speed hand pumps are used with single acting or double acting cylinders where idle stroke of ram has to be completed fast. These pumps are used with high tonnage or high lift cylinders or multiple cylinder systems requiring large volume of oil for full stroke of ram.