A strong proven rotating group allows the pumps to handle pressures to 280 bar (4000 psi) continuous and 320 bar (4600 psi) intermittent – with less maintenance cost. High load bearings and a stiff drive shaft help provide a pump B10 bearing life of 3320 hours at rated mobile conditions, reducing operating costs and extending operating life. 420 Series pumps feature a saddle-type swashplate with steel-backed polymer bearings. The swashplate features a pressure lubrication passage to reduce wear and further support internal loads. The stiff swashplate reduces deflection and allows even loading of the bearings, improving life. A single control piston reduces forces acting on the swashplate, resulting in reduced package size, which allows pump installation into tighter locations. 420 Series pumps operate at a level of quietness that exceeds the requirements of today's demanding work conditions. Another pump feature – a bimetal timing plate – improves pump filling characteristics which, in turn, reduces fluid-borne noise and extends pump life. Mounting flanges are offered in SAE and ISO configurations, and ports are offered in SAE and ISO tube and flange versions. This provides a wide variety of installation opportunities for global machine design. Side- or end-ported models are available to facilitate plumbing and help fit the pump to your machine space needs. Multiple drain ports allow many mounting orientations, reducing installed costs.
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