Abstract: A pump assembly 10 for high pressure cleaners having a pump body 12 encasing the free end 14 of a motor shaft provided with a keyed-on wobble plate 16 which moves one or more than one axial pistons 18 that are elastically tensioned by helical springs 20. The pump assembly also includes a pump head 32 fixed to the pump body 12 provided with fluid inlet and outlet conduits and relative valves, and an intermediate housing 34 for receiving and guiding the piston 18. The intermediate housing 34 has a frustoconical-shaped body with its larger diametered bottom section facing the same-diametered pump body 12 and being secured thereto by screws 36.

Abstract: An improved pump assembly 10 for high pressure cleaners, comprising a pump body 12 encasing the free end 14 of a motor shaft provided with a keyed-on, wobble plate 16 which moves one or more than one axial pistons 18 that are elastically tensioned by helical springs 20; the improved pump comprising also a pump head 32 fixed to said pump body 12 provided with fluid inlet and outlet conduits and relative valves, further to an intermediate housing 34 integrating the piston 18 support and guide lodgings.