HDP 250L
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HDP 250 L High Pressure Pump series Design criteria Hammelmann high pressure pumps are built to operate at the continuous maximum duty stated in the performance parameters. Just compare the crankshaft speed, average plunger speed, plunger diameter and power rating. Features  Power ratings up to 250 kW  Horizontal 5 cylinder design  Wide variety of complementary ancillaries 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 3 bearings and incorporating twin helical speed reducing gears  Pressurised oil lubrication system with oil cooler/filter High pressure pump

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Technical data, series HDP 250 L Performance parameters Required power rating [kW] 132 160 200 250 Operating pressure [bar] * At pressures over 2000 bar approx. 5% of the flow rate is lost due to the compressibility factor of water 67 80 96  Rod force: 82 kN  Stroke: 75 mm  Mean piston speed at n2 390 r.p.m. = 0,97 m/sec 465 r.p.m. = 1,16 m/sec 555 r.p.m. = 1,39 m/sec D = Piston/Plunger dia. [mm] n1 = Motor/Engine r.p.m. n2 = Crankshaft Conversion table Rating 1 kW Op. Pressure 1 bar Flow rate 1l 1l Hammelmann plunger pumps convert 93 to 98 % of the shaft power to hydraulic energy....

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