Category: R4 ‒ fixed displacement

 Hydraulic pumps of type R4 are integral check valve-controlled, self-priming radial piston pumps with fixed displacement. R4 pumps are designed for high pressure operation and long life.


  • Sizes 1.6 to 20
  • Radial piston pump with 3, 5 or 10 pistons
  • Self-priming, valve-controlled
  • Long bearing life due to hydro-dynamically lubricated plain bearings
  • Optional combination with variable displacement vane and axial piston pumps


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