Description Compact high-pressure pump with short installation length Size 45 … 125 Nominal pressure 400 bar Maximum pressure 450 bar Open circuit Features All-purpose high pressure pump Robust pump with long service life High power density Compact dimensions Very high total efficiency Robust 40° bent-axis technology Type code Technical data Table of values Size 45 56 63 80 90 107 125 Displacement geometric, per revolution Vg cm³ 44.9 56.6 63 79.8 90.5 106.7 125 Nominal pressure pnom bar 400 400 400 400 400 400 400 Maximum pressure pmax bar 450 450 450 450 450 450 450 Maximum speed nnom 1) rpm 2240 2000 2000 1800 1800 1600 1600 nmax 2) rpm 4250 3750 3750 3350 3350 3000 3000 Flow at nnom qV l/min 101 113 126 144 163 171 200 Torque at pnom M Nm 286 360 401 508 576 679 796 Rotary stiffness c kNm/rad 4.65 6.97 8.11 9.1 9.69 12.49 13.65 Moment of inertia for rotary group JTW kg·m² 033 034 035 056 058 088 091 Case volume V l 0.6 0.6 0.6 0.65 0.65 1.1 1.1 Weight (approx.) m kg 17 17 17 23 23 32.8 32.8 1) The values are applicable: – at an abs. pressure pabs = 1 bar at the suction port S – for the optimum viscosity range of vopt = 36 to 16 mm2/s - with hydraulic fluid on the basis of mineral oils 2) Maximum speed (limiting speed) with increased inlet pressure pabs at suction port S , see the following diagram. Maximum speed Note The values in the table are theoretical values, without consideration of efficiencies and tolerances. The values are rounded. Exceeding the maximum or falling below the minimum permissible values can lead to a loss of function, a reduction in operational service life or total destruction of the axial piston unit. Other permissible limit values, such as speed variation, reduced angular acceleration as a function of the frequency and the permissible angular acceleration at start (lower than the maximum angular acceleration) can be found in data sheet 90261. Determining the operating characteristics Flow [l/min] Torque [Nm] Power [kW] Key Vg Displacement per revolution [cm3] Δp Differential pressure [bar] n Rotational speed [rpm] ηv Volumetric efficiency ηhm Hydraulic-mechanical efficiency ηt Total efficiency (ηt = ηv • ηhm) Hydraulic fluids The axial piston unit is designed for operation with mineral oil HLP according to DIN 51524. Application instructions and requirements for hydraulic fluids should be taken from the following data sheets before the start of project planning: 90220: Hydraulic fluids based on mineral oils and related hydrocarbons 90221: Environmentally acceptable hydraulic fluids For operation with HF fluids please consult us. Viscosity and temperature of hydraulic fluids Viscosity Shaft seal Temperature1) Comment Cold start νmax ≤ 1600 mm²/s NBR2) ϑSt ≥ -40 °C t ≤ 3 min, without load (p ≤ 50 bar), n ≤ 1000 rpm, permissible temperature difference between axial piston unit and hydraulic fluid max. 25 K FKM ϑSt ≥ -25 °C Warm-up phase ν = 400 … 1600 mm²/s t ≤ 15 min, p ≤ 0.7 • pnom and n ≤ 0.5 • nnom Continuous operat
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