AXIAL PISTON PUMPS SHPV SECTIONAL VIEW 2
AXIAL PISTON PUMPS SHPV SYSTEM CIRCUIT PUMP AND MOTOR CIRCUIT working loop (high pressure) working loop (low pressure) control fluid suction line case drain fluid Above figure shows schematically the function of a hydrostatic transmission using an axial piston variable displacement pump and a fixed displacement motor. PUMP CIRCUIT SCHEMATIC Designation: 1 = Variable displacement pump 2 = Charge pump 3 = Servo control valve 4 = Charge check valve 5 = Charge relief valve 6 = Filter 7 = Heat exchanger Ports: A, B = Main pressure ports (working loop) S = Suction port - charge pump L1, L2 = Drain ports M = Gauge port - charge pressure 3
AXIAL PISTON PUMPS SHPV TECHNICAL SPECIFICATION HYDRAULIC PARAMETERS Maximum displacement per revolution of the variable displacement pump Maximum flow Displacement per revolution of the charge pump Maximum pressure Maximum pressure of control Maximum pressure in case Frame size 20 21 22 23 24 25 26 27 cm 3 33,3 51,6 69,8 89,0 118,7 165,8 227,3 333,7 [in 3 ] [2,03] [3,15] [4,26] [5,43] [7,24] [10,12] [13,87] [20,36] cm 3 119,54 159,96 196,14 230,51 278,94 348,18 429,59 557,28 min -1 cm 3 12,30 18,03 18,85 32,80 65,50 [in 3 ] [0,75] [1,10] [1,15] [2,00] [4,00] bar 420 [psi] [6092] bar 35 [psi] [508] bar 2,5 continuous 5,0 intermittent [psi] [36,3 continuous 72,5 intermittent] Maximum speed min -1 3590 3100 2810 2590 2350 2100 1890 1670 Minimum speed min -1 500 Nominal speed min -1 1500 Kinematic viscosity range of working fluid: starting min 2 s -1 1000 operating min 2 s -1 12-600 optimum min 2 s -1 25-35 Kind of working fluid mineral oil Operating temperature C -40 to +50 Maximum temperature of working fluid C 80 Purity of working fluid μm 10 Direction of shaft rotation clockwise or counterclockwise Maximum swash plate angle ± 18 Weight kg 45 55 63 78 124 164 212 270 [lb] [99] [121] [139] [172] [273] [362] [467] [595] 4
AXIAL PISTON PUMPS SHPV TECHNICAL SPECIFICATION DETERMINATION OF NOMINAL PUMP SIZE Unit: Metric system: Inch system: Pump output flow Q = Input torque M = Input power P = V g n g η v l/min Q = V g n g η v 1000 231 V g Δp V g Δp Nm M = 20 π η m 2 π η m V g n Δp V g n Δp kw P = 600 000 η t 396 000 η t [gpm] [lbf in] [hp] Efficiency characteristic curves available on request. V g = Pump displacement per revolution cm3 [in 3 ] n = Pump speed min -1 (rpm) Δp = Hydraulic pressure differential bar [psi] η v = Pump volumetric efficiency η m = Pump mechanical efficiency η t = Pump total efficiency TECHNICAL PARAMETERS Design Axial piston pump of swash plate design, with variable displacement. Type of mounting SAE four bolt flanges. External drain fluid loss Typical values for 350 bar [5076 psi] and 18 swashplate angle Pipe connections Main pressure ports: SAE split flange Remaining ports: SAE O-ring boss Direction of rotation Clockwise or counterclockwise (viewing from the input shaft). Installation position Optional; pump housing must be always filled with hydraulic fluid. (US gal/min) External drain fluid loss (l/min) Driveshaft speed n (min-1) (rpm) 5
AXIAL PISTON PUMPS SHPV DRAWINGS FRAME SIZE 20, 21, 22 AND 23 * Shaft spline data: spline shaft with involute spline, according to SAE handbook, 1963, class 1, fillet root side fit. View Z 6
AXIAL PISTON PUMPS SHPV DRAWINGS FRAME SIZE 20, 21, 22 AND 23 View Y Max. torque for charge pump inlet port (7/8-14 UNF - 2B) is 22-28 Nm [195-248 lbf in]. Frame size Port A and B Port L1 and L2 Port S Port M 20 SAE flange, size 1 21 SAE split flange boss 5000 psi 4 threads 22 3/8-16 UNC-2B 23 18 deep 7/8-14 UNF-2B SAE straight thread O-ring boss 7/16-20 UNF-2B SAE straight thread O-ring boss 7
AXIAL PISTON PUMPS SHPV DRAWINGS FRAME SIZE 20, 21, 22 AND 23 View X (for SHPV 20-21 only) View X (for SHPV 22 only) View X (for SHPV 23 only) 8
AXIAL PISTON PUMPS SHPV DRAWINGS FRAME SIZE 20, 21, 22 AND 23 Dimensions: mm mm mm mm mm mm mm mm mm mm mm mm B C D E F G H J K L M ØN Frame size [in] [in] [in] [in] [in] [in] [in] [in] [in] [in] [in] [in] 20 21 22 23 284 [11.181] 301 [11.850] 315 [12.402] 328 [12.913] 263 [10.354] 280 [11.024] 294 [11.575] 307 [12.087] 270 [10.630] 282 [11.102] 305 [12.008] 312 [12.283] 225 [8.858] 246 [9.685] 259 [10.197] 271 [10.669] 162 [6.378] 174 [6.850] 188 [7.402] 195 [7.677] 159 [6.260] 152 [5.984] 146 [5.748] 140 [5.512] 100 [3.937] 107 [4.213] 112 [4.409] 118 [4.646] 94 [3.701] 106 [4.173] 120 [4.724] 129 [5.079] 58 [2.283] 70 [2.756] 84 [3.307] 91 [3.583] 48 [1.890] 48 [1.890] 48 [1.890] 49 [1.929] 16 [0.630] 16 [0.630] 16 [0.630] 17.5 [0.689] 84 [3.307] 84 [3.307] 84 [3.307] 98 [3.858] mm mm mm mm mm mm mm mm mm mm mm mm T U V W X Y Z AA BB CC DD EE Frame size [in] [in] [in] [in] [in] [in] [in] [in] [in] [in] [in] [in] 20 21 22 23 62 [2.441] 68 [2.677] 71.4 [2.811] 77.7 [3.059] 95.7 [3.768] 108.7 [4.280] 112.7 [4.437] 128.7 [5.067] 92 [3.622] 102 [4.016] 105 [4.134] 115 [4.528] 95 [3.740] 108 [4.252] 108 [4.252] 119 [4.685] 51 [2.008] 53.2 [2.094] 60.5 [2.382] 65 [2.559] 81 [3.189] 85.8 [3.378] 85.8 [3.378] 95.2 [3.748] 3 [0.118] 6.35 [0.250] 9.5 [0.374] 12.7 [0.500] 174.9 [6.886] 187.6 [7.386] 187.6 [7.386] 198.6 [7.819] 150 [5.906] 162 [6.378] 162 [6.378] 173 [6.811] 115.9 [4.563] 128.6 [5.063] 128.6 [5.063] 139.6 [5.496] 120 [4.724] 131 [5.157] 133 [5.236] 144 [5.669] 100 [3.937] 110 [4.331] 113 [4.449] 123 [4.843] A 1 mm [in] Shaft spline Bore diameter for shaft coupling mm mm mm mm cm 3 mm FF GG HH JJ Charge pump ØO ØP mm mm mm mm R S Frame size [in] [in] [in] [in] [in] 3 [in] [in] [in] [in] [in] 20 21 22 23 117 [4.606] 122 [4.803] 126 [4.961] 140 [5.512] 113 [[4.449] 116 [4.567] 123 [4.843] 134 [5.276] 108 [4.252] 124 [4.882] 130 [5.118] 148 [5.827] 190 [7.480] 191 [7.520] 194 [7.638] 194 [7.638] 12 [0.732] 341 [13.425] 358 [14.094] 372 [14.646] 358 [14.094] 18 [1.098] 350 [13.780] 367 [14.449] 381 [15.000] 394 [15.512] 34.50-0.17 [1.358-0.0067 ] 34.50-0.17 [1.358-0.0067 ] 34.50-0.17 [1.358-0.0067 ] 37.68-0.17 [1.483-0.0067 ] 1 Short version available on request. Please contact SMIT Hydraulics service department. 33.338 [1.313] 33.338 [1.313] 33.338 [1.313] 36.513 [1.438] 21 [0.827] 21 [0.827] 21 [0.827] 23 [0.906] 16/32 16/32 16/32 16/32 31.75 + 0.062 [1.250 + 0.0024] 31.75 + 0.062 [1.250 + 0.0024] 31.75 + 0.062 [1.250 + 0.0024] 34.95 + 0.062 [1.376 + 0.0024] Information contained in this catalogue is accurate as of the publication date and is subject to change without notice. Performance values are typical values. Customers are responsible for selecting products for their applications using normal engineering methods. 9
S/HPV/15002 SMIT Hydraulics PHONE FAX Via Pietro Giardini, 318 +39 059 596 77 44 +39 059 596 08 80 (Domestic market) 41100 Modena - ITALY +39 059 596 77 45 +39 059 596 08 88 (International market)
AXIAL PISTON MOTORS SHMF SECTIONAL VIEW Purge relief valve High pressure relief valves (adjustable) Cylinder block assembly Shaft seal Output shaft Valve block Shuttle valve Swashplate 2
AXIAL PISTON MOTORS SHMF SYSTEM CIRCUIT PUMP AND MOTOR CIRCUIT working loop (high pressure) working loop (low pressure) control fluid suction line case drain fluid Above figure shows schematically the function of a hydrostatic transmission using an axial piston variable displacement pump and a fixed displacement motor. MOTOR CIRCUIT SCHEMATIC M A Designation: 1 = Fixed displacement motor 2 = Purge relief valve 3 = Shuttle valve 4 = High pressure relief valve A L 2 4 1 Ports: A, B = Main pressure ports (working loop) L 1, L 2 = Drain ports M A = Gauge port for port A M B = Gauge port for port B M = Gauge port - charge pressure B L 1 4 2 3 M M B 3
AXIAL PISTON MOTORS SHMF TECHNICAL SPECIFICATION HYDRAULIC PARAMETERS Maximum displacement per revolution of the variable displacement motor Maximum flow Maximum pressure Maximum pressure in case Frame size 20 21 22 23 24 25 26 27 cm 3 33,3 51,6 69,8 89,0 118,7 165,8 227,3 333,7 [in 3 ] [2,03] [3,15] [4,26] [5,43] [7,24] [10,12] [13,87] [20,36] cm 3 119,54 159,96 196,14 230,51 278,94 348,18 429,59 557,28 min -1 bar 420 [psi] [6092] bar 2,5 continuous 5,0 intermittent [psi] [36,3 continuous 72,5 intermittent] Maximum speed min -1 3590 3100 2810 2590 2350 2100 1890 1670 Minimum speed min -1 500 Nominal speed min -1 1500 Kinematic viscosity range of working fluid: starting min 2 s -1 1000 operating min 2 s -1 12-600 optimum min 2 s -1 25-35 Kind of working fluid mineral oil Operating temperature C -40 to +50 Maximum temperature of working fluid C 80 Purity of working fluid μm 10 Direction of shaft rotation clockwise or counterclockwise Maximum swash plate angle ± 18 Weight kg 30 35 40 47 70 124 152 197 [lb] [66] [77] [88] [104] [154] [273] [335] [434] 4
AXIAL PISTON MOTORS SHMF TECHNICAL SPECIFICATION DETERMINATION OF NOMINAL MOTOR SIZE Unit: Metric system: Inch system: V g n V g n Input flow Q e = l/min Q e = 1000 η v 231 η v [gpm] Output torque M e = Output power P e = V g Δp η m V g Δp η m Nm M e = 20 π 2 π Q e Δp η t V g n Δp η t kw P e = 600 396 000 [lbf in] [hp] Speed n = Q e 1000 η v min -1 n = V g Q e 231 η v V g (rpm) Efficiency characteristic curves available on request. V g = Motor displacement per revolution cm3 [in3] n = Motor speed min -1 (rpm) Δp = Hydraulic pressure differential bar [psi] Δp = p HD - p ND η v = Motor volumetric efficiency η m = Motor mechanical efficiency η t = Motor total efficiency p HD = High pressure bar [psi] p ND = Low pressure bar [psi] 5
AXIAL PISTON MOTORS SHMF TECHNICAL SPECIFICATION TECHNICAL PARAMETERS Design AAxial piston motor with fixed displacement and swash plate design. Type of mounting SAE four bolt flanges. Pipe connections Main pressure ports: SAE split flange Remaining ports: SAE O-ring boss Direction of rotation and flow Clockwise or counterclockwise (viewing from the output shaft). Direction of rotation Port A Port B Clockwise (R) Output Input Counterclockwise (L) Input Output Installation position Optional; motor housing must be always filled with hydraulic fluid. External drain fluid loss Typical values for 350 bar [5076 psi] and 18 swashplate angle (US gal/min) External drain fluid loss (l/min) Driveshaft speed n (min-1) (rpm) 6
AXIAL PISTON MOTORS SHMF DRAWINGS FRAME SIZE 22 AND 23 View Z View Y * Shaft spline data: spline shaft with involute spline, according to SAE handbook, 1963, class 1, fillet root side fit. Frame size Port A and B Port L 1 and L 2 Port M A and M B Port M 22 23 SAE flange, size 1 SAE split flange boss 5000 psi 4 threads 3/8-16 UNC-2B 18 deep 7/8-14 UNF-2B SAE straight thread O-ring boss 7/16-20 UNF-2B SAE straight thread O-ring boss 7
AXIAL PISTON MOTORS SHMF DRAWINGS FRAME SIZE 22 AND 23 View X (frame size 22) View X (frame size 23) 8
AXIAL PISTON MOTORS SHMF DRAWINGS FRAME SIZE 22 AND 23 Dimensions: mm mm mm mm mm mm mm mm mm mm mm mm A B C D E F G ØH J K L M Frame size [in] [in] [in] [in] [in] [in] [in] [in] [in] [in] [in] [in] 22 378 [14.882] 290 [11.417] 255 [10.039] 165 [6.496] 108 [4.252] 86.5 [3.406] 98 [3.858] 161 [6.339] 16 [0.630] 56 [2.205] 48 [1.890] 28.4 [1.118] ØN mm ØO mm mm ØP ØR mm ØS mm mm mm mm mm diameter for mm Weight T U V W Frame size [in] [in] [in] [in] [in] [in] [in] [in] [in] shaft coupling [in] kg [lb] 22 23 127 [5.000] 127 [5.000] 84 [3.307] 98 [3.858] 34.50-0.17 [1.358-0.0067] 37.68-0.17 [1.483-0.0067 ] 8.5 [0.335] 8.5 [0.335] 33.338 [1.313] 36.513 [1.438] 21 [0.827] 23 [0.906] 16/32 16/32 85.8 [3.378] 95.2 [3.748] 101 [3.976] 114 [4.488] 31.75 +0.062 [1.250 +0.0024] 34.95 +0.062 [1.376 +0.0024 ] 40 [88] 47 [104] Information contained in this catalogue is accurate as of the publication date and is subject to change without notice. Performance values are typical values. Customers are responsible for selecting products for their applications using normal engineering methods. 9
S/HMF/15003 SMIT Hydraulics PHONE FAX Via Pietro Giardini, 318 +39 059 596 77 44 +39 059 596 08 80 (Domestic market) 41100 Modena - ITALY +39 059 596 77 45 +39 059 596 08 88 (International market)