RM 250X - RM 900X Specifications All characteristic quantities at ν = 36 mm2/s; Θ = 50°C; poutlet = without pressure Nominal size 250 355 450 500 Displacement Vg cm3/rev 255 360 442 491 Theor. specific torque Tspec.theor. Nm/bar 4,1 5,7 7,0 7,8 Average specific torque Tspec.aver. Nm/bar 3,7 5,3 6,5 7,2 Min. starting torque / theor. torque % 89,5 90 90,5 91 Inlet pressure, max. continuous pcont. bar 250 intermittent pinterm. bar 315 peak ppeak bar 400 Total pressure, max. in port A+B p total bar 400 Leakage pressure, max. pLeak bar 1,5 Operating speed range n rpm 5-600 5-550 5-500 5-450 Continuous power, max. Pcont. kW 28 36 40 40 Intermittent power, max. Pinterm. kW 35 45 50 50 Moment of inertia J kgm2 0,0082 0,0089 0,0096 0,0101 Weight m kg 75 75 75 75 Temperature range of pressure medium Θ °C -30 up to +80 Viscosity range ν mm2/s 18 up to 1000, recommended: 30 up to 50 Nominal size 710 900 Displacement Vg cm3/rev 704 904 Theor. specific torque Tspec.theor. Nm/bar 11,2 14,4 Average specific torque Tspec.aver. Nm/bar 10,3 13,2 Min. starting torque / theor. torque % 89,5 91 Inlet pressure, max. continuous pcont bar 250 intermittent pinterm. bar 315 peak ppeak bar 400 Total pressure, max. in port A+B p total bar 400 Leakage pressure, max. pLeak bar 1,5 Operating speed range n rpm 5-550 5-450 Continuous power, max. Pcont kW 63 63 Intermittent power, max. Pinterm. kW 80 80 Moment of inertia J kgm2 0,0273 0,0298 Weight m kg 132 132 Temperature range of pressure medium Θ °C -30 up to +80 Viscosity range ν mm2/s 18 up to 1000, recommended: 30 up to 50 pcont = admissible continuous pressure at limitation to P cont. pmax = maximal admissible operating pressure at limitation to P intermit. ppeak = peak pressure, where the components remain safe in function. Pcont = Continuous power (at maximal 10 bar outlet pressure). Motor flushing must be carried out above Pcont. Pinterm. = Power, which may be demanded temporarily (max. 10% duty cycle / hour). Power, speed and bearing life may be increased when flushing with 3 - 6 liters flushing oil. For queries, please look at page 20 4 www.jbj.co.uk/hydraulic-motors.html #DriveLineHarmony
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