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HDP 500

Hammelmann high pressure pumps are built to operate at the continuous maximum duty stated in the performance parameters. Operating pressure and flow rate determine the power and pump selection. We can offer a large number of combinations to meet specific requirements.

Bare shaft pump HDP 500

Performance parameters

Features, quality and reliability 



Performance parameters

  • Power rating up to 670 hp
  • Operating pressure up to  43,500 psi
  • Flow rate up to 337.9 gpm

  • Rod force: 47,200 lbf
  • Stroke: 3.94 inch
  • Mean piston speed at n2
    315 r.p.m. = 3.5 feet/sec
    380 r.p.m. = 4.2 feet/sec
    465 r.p.m. = 5.1 feet/sec

  • Dimensions : 39.7 inch (length) x 24.8 inch (width)  x 61.7 inch (height)
  • Weight: 4320 lbs

Hammelmann plunger pumps convert 93 to 98 % of the shaft power to hydraulic energy.



  • Vertical 3 cylinder design
  • Wide variety of complementary ancillaries
  • Optional: diesel unit with speed transmission

Quality and reliability

  • Stainless steel pump head free of alternating stress
  • Cross head piston bellows seal
  • Choice of 'application specific' seal assemblies
  • Solid ceramic or tungsten carbide plungers
  • Choice of bronze or stainless steel suction chamber
  • Crank section calculation by ‘Finite element method’ ensures long working life under continuous load
  • Crankshaft supported by 2 bearings and incorporating twin helical speed reducing gears
  • Pressurised oil lubrication system with oil cooler/filter