Staffa/Kawasaki Product info in Pdf format - Airline Hydraulics

MotorsIndustrial ProductsCircuit and Application NotesStarting TorqueThe starting torques shown on the graphs on pages 9 to 12 are average and will vary with systemparameters.Low Speed OperationsMinimum operating speeds are determined by the hydraulic system and load conditions (load inertia, driveelasticity, etc.) Recommended minimum speeds are shown below:Model Typer/minB010 20B030 5B045 6B06080/100/125/150/200 3B270/B325/HMB400 2B700 1Note: Speed as low as 0.025 rpm can be accurately achieved using electronic control systems. Foroperation at speeds below these figures please contact Kawasaki Precision Machinery (UK) Ltd.High Back PressureWhen both inlet and outlet ports are pressurised continuously, the lower port pressure must not exceed 70bar at any time.Note: High back pressure reduces the effective torque output of the motor.Boost PressureWhen operating as a motor the outlet pressure should equal or exceed the crankcase pressure . If pumpingoccurs (i.e. overrunning loads) then a positive pressure ,”P” ,is required at the motor ports .Calculate “P”(bar) from the operating formulaBoost Formula P= 1+ N 2 x V 2 + CKWhere P is in Bar, N = motor speed (RPM), V = motor displacement (cc/rev.), C=Crankcase pressure(BAR) and K=a constant from the table below:MOTOR PORTING CONSTANTHMB010 Standard 8 x 10 8HMB030Standard 3.7 x 10 9SO3, F(M)3 7.5 X 10 9HMB045HMB060/080/100Standard 1.3 x 10 10SO3, F(M)3 1.6 X 10 10F(M)2 2.7 x 10 9F(M)3, S03 1.8 X 10 10F(M)2 4.2 X 10 9HM(HD)B125/150/200 F(M)3, S03 4.0 X 10 10F(M)4, S04 8.0 X 10 10HM(HD)B270/325 F(M)4, S04 7.2 X 10 10HMHDB400Standard 6.0 X 10 10S045 7.2 X 10 10HMB700 Standard 1.3 x 10 11ModelStaffaPage26.70Data SheetM-1001/03.00Issue 03/00