AXIAL PISTON PUMPS SERIES 20 CLOSED CIRCUIT

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HYDROSTATIC TRANSMISSIONS/HYDRAULIC PMUP&MOTOR

Complete line of the NEW hydraulic pumps, motors and spare parts. Hydraulic Pumps & Motors EpTM TOP QUALITY: Best materials and advanced workmanship. Well and thru decades proven classics in the Transit Mixer Hydrostatic Drives COSTS SAVINGS: BRAND NEW product at a low costs NO MORE CORE HASSLES ! INTERCHANGEABILITY: EpTM Series pumps, motors & spare parts are completely interchangeable with SAUER-SUNDSTRAND * series 20, size 20 to 27. NOW THERE IS NO NEED TO SWITCH FROM A PROVEN HIGH QUALITY HYDROSTATIC TRANSMISSION
Please, refer to our detailed Catalogue, for further details
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AXIAL PISTON PUMPS SERIES 20 CLOSED CIRCUIT

AXIAL PISTON PUMPS SERIES 20 ................................................................................................................ 2 GENERAL DESCRIPTIONS ...................................................................................................................... 2 FEATURES .................................................................................................................................................. 3 TECHNICAL DATA ..................................................................................................................................... 4 SERVO DISPLACEMENT CONTROL (LINEAR RESPONSE) ................................................................... 6 REVERSING TIME ...................................................................................................................................... 7 DIMENSIONS ........................................................................................................................................... 8 TYPE DESIGNATION ............................................................................................................................... 11 TYPES OF CONTROLS ............................................................................................................................. 12 SPARE PARTS ............................................................................................................................................13 AXIAL PISTON FIXED MOTORS SERIES 20 ............................................................................................ 14 GENERAL DESCRIPTIONS ........................................................................................................................14 FEATURES .................................................................................................................................................. 15 TECHNICAL DATA .................................................................................................................................... 16 DIMENSIONS ........................................................................................................................................... 17 MANIFOLD ASSY ..................................................................................................................................... 20 TYPE DESIGNATION ............................................................................................................................... 21 SPARE PARTS ............................................................................................................................................. 22 AXIAL PISTON VARIABLE MOTOR SERIES 20 ......................................................................................... 23 TYPE DESIGNATION ................................................................................................................................. 23 CONCRETE MIXER REDUCERS SERIES PM .............................................................................................. 24

Page No. 1

AXIAL PISTON PUMPS SERIES 20 CLOSED CIRCUIT

General description
Axial piston variable displacement pumps, Series 20,are of swash plate construction with variable flow capability suitable for hydrostatic transmissions with closed circuit. The flow rate is proportional to the pump`s driven speed displacement, which ,in turn ,is determined by the swash plate angle .The latter is infinitely adjustable between zero and maximum displacement Flow direction is reserved by tilting the swash plate to the opposite side of the neutral or zero displacement position. Figure :

Page No. 2

AXIAL PISTON PUMPS SERIES 20 CLOSED CIRCUIT

Features
Axial piston variable displacement pumps, Series 20, are well engineered and easy handle. The full length shaft with a highly efficient tapered roller bearing arrangement offers a high loading capacity for external radial forces. Additional pumps can be built on. The hydro mechanical servo displacement control maintains the selected swash plate position and hence pump displacement. Upon release of the control handle, the swash plate automatically returns to the null position and the flow becomes zero. High case pressures can be achieved without leakage even at the lowest temperatures by using suitable shaft seals. The servo valve arrangement offers the facility to incorporate function regulators and remote control systems. Axial piston units are designed for easy servicing , complete dismantling and disassembly can be carried out with standard hand tools , and all components or sub assemblies are replaceable.

Figure 2 shows schematically the function of hydrostatic transmission using an axial piston variable displacement pump and fixed displacement motor.

Page No. 3

AXIAL PISTON PUMPS SERIES 20 CLOSED CIRCUIT

Technical data
Table 1: Dimension Max. displacement per revolution of the variable displacement pump Max. flow Displacement per revolution of the charge pump Max. pressure Nominal pressure Max. pressure of control Charge pressure Max. pressure in case Maximum speed + Minimum speed Nominal speed Kinematic viscosity range of working fluid -starting -operating -optimum Kind of working fluid Operating temperature Max. temperature of working fluid in tank Purity of working fluid Direction of shaft rotation Maximum swash plate angle Weight cm
3 3

20 33,3

21 51,6

22 69,8

Frame size 23 24 89,0

25

26

27

118,7 165,8 227,3 333,7

dm min cm
3

-1

119,54 159,96 196,14 230,51 278,94 348,18 429,59 557,28

12,3 12,3

18,03 18,03 18,8

32,8

32,8

65,5

MPa MPa MPa MPa MPa -1 min -1 min -1 min

35 21 3,5 0,8 2,0 0,25 continuous 0,5 intermittent

3590 3100 2810 2590 2350 2100 1890 1670

500 1500 1000 12-600 25-35 mineral oil -40 to + 50 80 10 clockwise or counter clockwise 18
45 55 63 78 124 164 212 270

mm s

2 -1

C C m kg

+ for higher speeds contact our Application department Figure 3. External drain fluid loss for frame sizes 20 23 Determination of nominal pump size Vg . n . v Qe = 1000 ( l/min )

15,9 . Vg . p Me = - ( Nm ) 100 . mh Mg . n Qe . p Pe = - = 9550 600 t Vg displacement ( cm ) per revolution p difference high and low pressure ( MPa ) 1 n speed ( min ) v volumetric efficiency mh mechanical hydraulic efficiency t total efficiency
3

Page No. 4

AXIAL PISTON PUMPS SERIES 20 CLOSED CIRCUIT

EXAMPLES OF CURVES DEPENDENCES OF EFFICIENCY ,FLOW AND OUTPUT ON THE SPEED. ( for operating condition of 18 swash plate angle )

For frame size 20

For frame size 22

For frame size 23

volumetric efficiency t total efficiency

Page No. 5

AXIAL PISTON PUMPS SERIES 20 CLOSED CIRCUIT

Servo Displacement Control ( linear response )
Regulated by the control handle on the servo valve , the swash plate can be infinitely varied in both directions with the help of the servo system. The pump displacement resulting from any control handle position can be established using figures ( 5a 5c ). The angle of the control handle for stroke initiation and for the final position of the stroke can vary from unit to unit within the range of the tolerance band ( Figure 5a- 5c) .

Frame size 20

Frame size 22

Frame size 23

Page No. 6

AXIAL PISTON PUMPS SERIES 20 CLOSED CIRCUIT

Reversing Time
Time for the directional change of the flow from Q max across 0 to Q max depending on the size of the control orifice fitted in the supply port to the servo valve ( figure 7 ). The values given assume movement of the control handle directly from one end position to other . Adjustment time of handle: Operating pressure: Speed: Viscosity: < minimum reversing time 21 MPa -1 1450 min 2 -1 35 mm .s

Schematic diagram of servovalve with Alternative orifice position

Servo valve counterbored recessed for Orifices insert

The reversing time in one flow direction can be extended by inserting an orifice in one of the pilot ports only. Table 2.
Frame size Diameter of orifice (mm) 0,76 1,05 1,60 without orifice 0,76 1,05 1,60 without orifice 0,76 1,05 1,60 without orifice 0,76 1,05 1,60 without orifice Reversing time (s) 3,78 2,16 1,14 0,60 4,14 2,34 1,20 0,66 6,06 3,42 1,74 0,96 6,24 3,54 1,80 1,02 Frame size Diameter of orifice (mm) 0,76 1,05 1,60 without orifice 0,76 1,05 1,60 without orifice 0,76 1,05 1,60 without orifice 0,76 1,05 1,60 without orifice Reversing time (s) 10,20 5,82 2,88 1,68 11,58 5,92 3,12 1,86 29,70 16,20 7,50 3,78 30,90 15,72 7,80 5,64

20

24

21

25

22

26

23

27

Page No. 7

AXIAL PISTON PUMPS SERIES 20 CLOSED CIRCUIT

Dimensions
Table 3. Dimensions / mm /
Frame size 20 21 22 23 24 25 26 27 Frame size 20 21 22 23 24 25 26 27 Frame size 20 21 22 23 24 25 26 27 Frame size 20 21 22 23 24 25 26 27 Frame size 20 -24 25 26 27 SAE flange, size 1 4 threads, 6000 psi, 5/8-11 UNC-2B, 35 deep
1/2

A 190 191 194 194 213 286 285 300 G1 81,03 86 86 95,2 106,5 130 143,7 158,7 T

A1 146 146 194 194 204 254 240 274 H 340 358 381 395 498 560 584 656 U

B1

B2 100 110 113 123,8 132 142 153 172 H3 352 367 381 395 510 560 614 656 V3 115,9 128,6 128,6 139,8 152,3 165,1 167,4 190,5 l

B3 122 131 135 146 153 162 174 193 L 224 246 256 270 318 366 388 433 X 159 152 146 140 173 219 235 246 l1

D3

D4

D5

E 56 70 83 90 133 160 180 208 N 55,6 65 68,3 77,8 87,3 97 108 127

47.6 112,7 48 124 48 133 49 150,8 70 167 80 174 81 197 86 212 H1 270 282 311 320 377 423 451 475 V 152 160 165 171 186 199 201 225 h2 51,16 54 60,5 65 68,2 74 79,4 95,3 H2 284 301 314 327 412 457 486 578 V1 113 122 123 134 154 175 214 216 k

56 75 77

162 229 317,5 317,5 350 L1 161,2 174 188 194 239 264 283 311

127-0,005 152,4 165,1 165,1 177,8 L2 93,7 106 119 127 169 196 215 244 S

84 98 98 25,4 110 114 M 94,7 108,7 112,7 127,6 146 153,7 170,3 187,2 d 34,5
-0,17

F +-0,4 15 15 15 15 21,3 21,3 21,3 27,7 R1 68 68 68,3 68,3 76 76 76 76 d1

G 163 172 172 190,4 213 260 287,4 317,4 S1 100 107 111 117 148 171 162 198 f

19-0,25

Y 3 6,35 9,5 12,7 14 16 14,3 17,5

19 9,4
+0,2

21

3 6,35 3/8-16 9,5 UNC-2B 12,7 14 16 5/8-11 16,3 UNC-2B 17,5

37,68

-0.18

M10 5H M14 5H M16

16 17,5 23,5 25

44,03 64,66

h1 62 68 71,4 77,7 88,5 98 100 116

n H with charge pump 12 3 cm (sizes 20-23), 33 cm3 (size 25) H3 with charge pump 18 cm3 3 (sizes 20-23), 33 cm (size 3 24), 66 cm (size 25) M1, M2,Z2

48

12,5 12,45

min20 30 30 36,7 30 P1,2

drain

52,4 45o 79,4

26,2

6,73

67

15,6

36,5

Port A and B SAE flange, 3000 psi 4 threads, 3/8-16 UNC-2B, 18 deep

Port R gear pump 7/8-14 UNF-2B 1 5/16 12 UN-2B 1

5/16

7/8-14 UNF-2B 1
5/16

12 UN-2B

1 7/8-12 UNF-2B SAE straight threads O ring boss

12 UN-2B
1/4

SAE flange,size 1 , 3000 psi, 4 threads 7/16-14 UNC-2B

7/16-20 UNF2B, SAE straight thread O-ring boss

Page N o. 8

AXIAL PISTON PUMPS SERIES 20 CLOSED CIRCUIT

Figure. 8 Outline drawing for axial piston variable displacement pumps, Series 20,frame size 20-23.
H

H1 L

L1 X S1 P2 B c k

15+0,8 a -0,3

n R D5

h1

I1

V3

h1

I E

B1 B2 B3

Z1 M1
OIL DRAINAGE B ZERO POSITION H2 S A L2

Deviating control lever of servo valve in direction: A: Causes high pressure in A orifice in clockwise pump Causes high pressure in B orifice in counter clockwise pump B: Causes high pressure in B orifice in clockwise pump Causes high pressure in A orifice in counter clockwise pump

Page No. 9

D4 d D3

h2

d2

AXIAL PISTON PUMPS SERIES 20 CLOSED CIRCUIT

Figure 9: Hose flange

Dimensions /mm/: Frame size 20-24 25-27 A 81 112 B 70 95 C D-0,1 35 52,4 46 79,4 E-0,1 26,2 36,5 F 3/816 UNC-2A 5/811 UNC-2A H Washer 10,2 Washer 16 J 22,5 30

Firuge 0: Flange for piping

Dimensions /mm/: Frame size A 20-24 81 25-27 112 Frame size 20 24 25 27 K 28 38

B 70 95 L 38 50

C D-0,1 40 52,4 65 79,4 M-0,1 8 12,6

E-0,1 26,2 36,5

F 3/816 UNC-2A 5/811 UNC-2A N-0,1 2,8 2,8 O 39,70,05 53,90,01

H Washer 10 Washer 16 P + 0,2 4 4

J 22,5 30

U V5-104 V6-158

Note: Flange according to SAE J 518 c Frame size 20 24: size 1, 5000 psi, torque for screw tightening 3/8 16 UNC2A: 37 42 Nm Frame size 25 27: size 1 1/2, 6000 psi, torque for screw tightening 5/8 11 UNC2A: 158 181 Nm

Page No. 10

AXIAL PISTON PUMPS SERIES 20 CLOSED CIRCUIT

Type designation

Special

20 21 22 23 24 25 26 27

33,3 51,6 69,8 89,0 118,7 165,8 227,3 333,7

Reversible

40

64,66

21,80

A B C D F
NN

18,85 cm3 65,5 cm3

AA BA CA

other

Page No. 11

AXIAL PISTON PUMPS SERIES 20 CLOSED CIRCUIT

Types of controls

Page No. 12

AXIAL PISTON PUMPS SERIES 20 CLOSED CIRCUIT

Spare Parts

Item 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

Pcs 1 1 2 2 1 1 1 1 2 1 9 1 1 1 1 1 1 1 1 1 6 1 1 1 2 1 1 1 1 2 2

Name Servovalve Assembly Charge Pump CW Servo Cylinder Servo Piston Front Cover Pump Housing End Cap Swash Plate Check Valve Cylinder Barrel Housing Piston Assembly Bearing Plate Retainer Guide Slipper Retainer Spring Retainer Spring Seat Spring Guide Bearing Plate Pilot Pin Cylinder Barrel Spring Retainer Spring Retaining Ring Thrust Plate Valve Plate CW Valve Plate CCW Trunnion Seal Retainer Rotating Seal Stationary Seal Drive Shaft Servo Link Sleeve Retainer

Item 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62

Pcs 2 1 2 1 1 1 3 2 1 1 1 2 1 1 6 (8*) 2 1 3 1 4 1 9 4 8 3 5 2 6 1

Name Spring Guide Shim Washer Orifice Spacer Control Handle Loop Cap Brand plate Control Valve Gasket Charge Pump Gasket Shim Pack End Cap Gasket Front Cover Gasket Not used Seal Spring Servo Spring Nut Plastic Plug Plug Expander 05 Expander 09 Hex Head Screw Hex Head Screw Not used Hex Head Screw End Cap Screw End Cap Screw Screw Hex Head Screw Pin

Item 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78

Pcs 4 1 1 4 1 2 8 1 2 1 2 2 2 4 1 1

Name Pin Drive Screw Pin Pin Retaining Ring Retaining Ring Retaining Ring O- Ring O- Ring O- Ring O- Ring O- Ring O- Ring O- Ring Main shaft bearing Shaft bearing Swashplate bearing Washer Washer Washer Drive Screw Washer Link Swahsplate Socket Head Screw O- Ring Not used Hex Head Screw Cylinder barrel set Set of gaskets Shaft sealings set

79 2 80 20 81 13 82 1 83 4 84 6 85 1 86 87 88 89 4 2 4 1 1 1

To enquiry for spare parts, please specify the following : - position number according to explosion view - name of the part - size of pump or motor (PV or MF 20,21,22,23,24,25,26,27) - quantity required

Page No. 13

AXIAL PISTON FIXED MOTORS SERIES 20 CLOSED CIRCUIT

General Description
Axial piston fixed displacement motors, Series 20, are of swash plate construction with preset displacement, and are intended for closed circuit operation. The output speed is proportional to the flow rate of the input fluid. The output torque is proportional to the differential between high and low pressure sides of the fluid cirucit. The direction of motor (output) shaft rotation depends upon which port the fluid enters the motor. Figure :

Page No. 14

AXIAL PISTON FIXED MOTORS SERIES 20 CLOSED CIRCUIT

Features
Axial piston fixed displacement motors, Series 20, are well-engineered and easy to handle. The full-length shaft with a highly efficient tapered roller bearing arrangement offers a high loading capacity for external radial forces. High case pressures can be achieved without leakage even at the lowest temperatures by using suitable shaft seals. The modular construction of the units simplifies the production of a wide variety of model options while limiting the number of different components involved. Light weight, short versions available on request.

Figure 2:

Figure 2 shows schematically the function of a hydrostatic transmission using an axial piston variable displacement pump and a fixed displacement motor.

Page No. 15

AXIAL PISTON FIXED MOTORS SERIES 20 CLOSED CIRCUIT

Technical data
Table 1: Dimension Max. displacement per revolution of the fixed motor Max. flow Displacement per revolution of the charge pump Max. pressure Nominal pressure Max. pressure of control Charge pressure Max. pressure in case Maximum speed + Minimum speed Nominal speed Kinematic viscosity range of working fluid -starting -operating -optimum Kind of working fluid Operating temperature Max. temperature of working fluid in tank Purity of working fluid Direction of shaft rotation Maximum swash plate angle Weight cm
3 3

20 33,3

21 51,6

22 69,8

Frame size 23 24 89,0

25

26

27

118,7 165,8 227,3 333,7

dm min cm
3

-1

119,54 159,96 196,14 230,51 278,94 348,18 429,59 557,28

12,3 12,3

18,03 18,03 18,8

32,8

32,8

65,5

MPa MPa MPa MPa MPa -1 min -1 min -1 min

35 21 3,5 0,8 2,0 0,25 continuous 0,5 intermittent

3590 3100 2810 2590 2350 2100 1890 1670

500 1500 1000 12-600 25-35 mineral oil -40 to + 50 80 10 clockwise or counter clockwise 18
30 35 40 47 70 124 152 197

mm s

2 -1

C C m kg

+ for higher speeds contact our Application department Figure 3. External drain fluid loss for frame sizes 20 23 VM . n . v Qe = 1000 ( l/min ) Motor input flow

15,9 . VM . p . mh Me = - ( Nm ) output torque 100 Mg . n Qe . p . t output Pe = - = (kW ) power 9550 600 VM displacement ( cm ) per revolution p difference high and low pressure ( MPa ) 1 n speed ( min ) v volumetric efficiency mh mechanical hydraulic efficiency t total efficiency
3

Page No. 16

AXIAL PISTON FIXED MOTORS SERIES 20 CLOSED CIRCUIT

Table 2: Dimensions /mm/

Frame size
20 21 22 23 24 25 26 27

A
15,71,5 15,71,5 15,71,5 17,21,5 25 25 27 38

C
56 56 56 56 75 77 77 77

C1

D1

D2

D3

D4
108 108 108 108 121 127 127 140

D5
25,4 25,4 25,4 25,4 25,4 36,5 36,5 36,5

F
15+0,8 -0,3 15+0,8 -0,3 15+ 0,8 - 0,3 15+0,8 -0,3 21,3+0,8- 0,3 20,5+ 0,8- 0,3 20,6+0,8- 0,3 27

H
340 360 380 395 442 542 572 603

190 162 146 140 127- 0,05 190 162 147 154 127- 0,05 194 162 194 161 127- 0,05 194 162 194 180 127- 0,05 214 229 204 200 152,4- 0,05 285 317,5 254 230 165,1- 0,05 281 317,5 273 271,5 165,1- 0,05 298 350 298 292 177,8- 0,05

Frame size
20 21 22 23 24 25 26 27

H1
36 36 36 36

H2
252 270 291 306 362 387 410 447

H3

H4

H5
11 9 12 6

H6
25 32 30 44

K
214 235 255,3 272,3 305 330 346 387

P1,P2,P3

R1
82 88 98 107 109 136 152 161

R2
18 18 18 18

U2
19 19 19 19 21 21 21 21

315 277 354 295 382 315 400 331 481 388,7 524 442,5 547 588 483,5

88,7 97 108 117 7/8-14 UNF-2B 125 136,5 139,7 154

Frame size
20 21 22 23 24 25 26 27

U1

b
162 171 172 192 214 260 292 317

B1

d1
M10 M10 M10 M10 M14 M14 M14 M16

h
103 100,6 115

H1
71 76 87 96 100 124 138 146

k
48 48 48 48 67 67 67 67

7/8-14UNF-2B

3/8-16UNC-2B

5/8-11UNC-2B

82,5 34,5-0,17 85,8 34,5-0,17 86 34,5-0,17 96 37,68-0,18 107 44-0,18 130 44-0,18 146 44-0,18 159 64,7-0,18

170 183

Frame size
20 21 22 23 24 25 26 27

I
12,5 12,5 12,5 12,5 12,5 16 16 16 0,2 0,2 0,2 0,2 0,2 0,2 0,2 0,2

I1
min.20 min.20 min.20 min.20 min.30 min.30 min.30 min.40

z
45 0 45 0 45 0 45 0 45 0 45 0 45 0 45
0

m
52,4 52,4 52,4 52,4 52,4 79,4 79,4 79,4

n
26,2 26,2 26,2 26,2 26,2 36,5 36,5 36,5

x1, x2, x3

156 160 165 7/8-14UNF- 2B 170 175 219 228,5 15/16-12UN - 2B 278

7/16-20 UNF 2B

Page No. 17

AXIAL PISTON FIXED MOTORS SERIES 20 CLOSED CIRCUIT

Figure 4: Outline drawing motor configuration with manifold assy.

Page No. 18

AXIAL PISTON FIXED MOTORS SERIES 20 CLOSED CIRCUIT

Figure 9: Hose flange

Dimensions /mm/: Frame size 20-24 25-27 A 81 112 B 70 95 C D-0,1 35 52,4 46 79,4 E-0,1 26,2 36,5 F 3/816 UNC-2A 5/811 UNC-2A H Washer 10,2 Washer 16 J 22,5 30

Firuge 0: Flange for piping

Dimensions /mm/: Frame size A 20-24 81 25-27 112 Frame size 20 24 25 27 K 28 38

B 70 95 L 38 50

C D-0,1 40 52,4 65 79,4 M-0,1 8 12,6

E-0,1 26,2 36,5

F 3/816 UNC-2A 5/811 UNC-2A N-0,1 2,8 2,8 O 39,70,05 53,90,01

H Washer 10 Washer 16 P + 0,2 4 4

J 22,5 30

U V5-104 V6-158

Note: Flange according to SAE J 518 c Frame size 20 24: size 1, 5000 psi, torque for screw tightening 3/8 16 UNC2A: 37 42 Nm Frame size 25 27: size 1 1/2, 6000 psi, torque for screw tightening 5/8 11 UNC2A: 158 181 Nm

Page No. 19

AXIAL PISTON FIXED MOTORS SERIES 20 CLOSED CIRCUIT

Manifold assy
Manifold assy consist of control elements that serve to restrict working pressure in the high pressure hydrostatic circuit, to exchange the heated working fluid in closed hydrostatic circuit, to charge the volume losses in closed hydrostatic circuit, to charge the volume losses hydrostatic circuit as well to secure rinsing of transmission case.

Manifold assy with by-pass valve

Manifold assy with by-pass valve secures all the functions as manifold assy. On the back side there is a built-in by-pass valve designed for interconnection of high pressure lines in closed hydrostatic circuit.

Page No. 20

AXIAL PISTON FIXED MOTORS SERIES 20 CLOSED CIRCUIT

Type designation

MF

MF Fixed

Motor

Special
20 21 22 23 24 25 26 27

33,3 51,6 69,8 89,0 118,7 165,8 227,3 333,7

3.

Pressure setting in port B 11 14 35 40 42 00 11 MPa 14 MPa 35 MPa 40 MPa 42 MPa Without pressure valve

40

64,66

21,80

Pressure setting in port A 11 14 35 40 42 00 11 MPa 14 MPa 35 MPa 40 MPa 42 MPa Without pressure valve

A B C D N

Manifold assy Manifold assy with by-pass valve Manifold assy without by-pass valve Without manifold assy with cover plate Without manifold assy with by-pass valve Without manifold assy

6. Pressure setting of low-pressure valve in the manifold assy

11 13 16 00 1,1 MPa ( 1,1 0,05 MPa at 3,8 dm3.min-1) 1,3 MPa ( 1,3 0,05 MPa at 3,8 dm3.min-1) 1,6 MPa ( 1,3 0,05 MPa at 3,8 dm3.min-1) without manifold assy

Page No. 21

AXIAL PISTON FIXED MOTORS SERIES 20 CLOSED CIRCUIT

Spare Parts

Item 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

Pcs 1 1 1 1 1 9 1 1 1 1 1 1 1 1 1 6 1 1

Name Manifold Assy 35 MPa Motor Housing End Cap Swash Plate Cylinder Barrel Housing Piston Assembly Bearing Plate Retainer Guide Slipper Retainer Spring Retainer Spring Seat Spring Guide Bearing Plate Pilot Pin Cylinder Barrel Spring Retainer Spring Retainer Ring Valve Plate

Item 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36

Pcs 1 1 1 1 1 1 2 1 1 6 1 1 1 6 4 3

Name Seal Retainer Rotaling Seal Stationary Seal Drive Shaft Shim Loop Cap Not used End Cap Gasket Not used Seal Spring Plug Plug Hex Head Plug Hex Head Screw End Cap Screw Hex Head Screw Not used

Item 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52

Pcs 1 1 1 2 1 1 1 2 1 1 1 8 6 4 2 1 1 1 1

Name Drive Screw Pin Pin Pin Retaining Ring O- Ring O- Ring O- Ring O- Ring Bearing Bearing Washer Washer Drive Screw O- Ring Washer Cylinder barrel set Set of gaskets Shaft sealings set

To enquiry for spare parts, please specify the following : - position number according to explosion view - name of the part - size of pump or motor (PV or MF 20,21,22,23,24,25,26,27) - quantity required
Page No. 22

AXIAL PISTON VARIABLE MOTORS SERIES 20 CLOSED CIRCUIT

Type designation
1
MV

2
XX

3
XXX

4
X

5
X

6
X

7
XX

8
XX

9
XX

10
XX

11
XX

12
XXX

1. MV

Motor variable

12.

Special production number "000"

2.

Displacement Vgmax [cm3] 20 22 23 11. Orifice A 0,76 mm 0,91 mm 1,05 mm 1,36 mm 1.6 mm without orifice orifice in channel "P" orifice in channel "A","B" orifice in channel "P","A","B" orifice in channel "A" orifice in channel "B" orifice in channel "P","A" orifice in channel "P","B" without orifice

3. TYPES OF CONTROLS WHITOUT CONTROLS DEVICE AAA - without the mechanical -hydraulic servo valve, with top cover only -without the mechanical-hydraulic servo valve, with D18 joining piece and cover

B C D E N 1 2 3 4 5 6 7 0

BBB

MECHANICAL - HYDRAULIC MHx - mechanical -hydraulic servo valve 0 - standard

ELECTRICAL - HYDRAULIC Erx 0 1 2 -three positional distributor (non-continuous) - empty - electric control; voltege 12V=; Dn 6 mm - electric control; voltege 24V=; Dn 6 mm

AUTOMATIC RPx 1 2 3 4 5 6 7 8 9 - automatic control - constant pressure - pressure value - pressure value - pressure value - pressure value - pressure value - pressure value - pressure value - pressure value - on request 5 Mpa 10 Mpa 15 Mpa 20 Mpa 25 Mpa 30 Mpa 35 Mpa 40 Mpa 10. Pressure setting in port B 21 28 35 40 42 45 48 52 21 Mpa 28 Mpa 35 Mpa 40 Mpa 42 Mpa 45 Mpa 48 Mpa 52 Mpa

4. Dimension of the input shaft A B C D E F G I J K L M P X 14 teeth, 12/24 PITCH, 31,20 19 teeth, 16/32 PITCH, 31,75 21 teeth, 16/32 PITCH, 34,50 23 teeth, 16/32 PITCH, 37,68 27 teeth, 16/32 PITCH, 44,03 13 teeth, 16/32 PITCH, 21,805 13 teeth, 8/16 PITCH, 43,71 20 teeth, 16/32 PITCH, 33,91 cone 1:8, SEA J501, 41,27 cone 1:8, SEA J501, 31,75 parallel with key 34,925; parallel with key 44,45; 15 teeth, 16/32 PITCH, 25,40 special design on request

20

22

23

9. Pressure setting in port A 21 28 35 40 21 Mpa 28 Mpa 35 Mpa 40 Mpa 42 Mpa 45 Mpa 48 Mpa 52 Mpa

8.

42 45 48 52

Pressure setting of low-pressure valve in the manifold assy 11 13 16 00 1,1MPa (1,10,05 Mpa at 3,8 dm3.min-1) 1,3MPa (1,30,05 Mpa at 3,8 dm3.min-1) 1,6MPa (1,60,05 Mpa at 3,8 dm3.min-1) without manifold assy

5. Dimension of high pressure ports A B C SEA J518c , code 62, size 1", 6000PSI SEA J518c , code 61, size 1", 5000PSI ISO 6162, DIN25, type II, 40 MPa

Thread 7/16"-14 UNC-2B 3/8"-16 UNC-2B M 12

20

22

23

Other values according to mutual agreement.

7. The minimum inclination angle of the swashplate

FRAME SIZE 20 22 23

Displacement in cm3 07 08 6. Manifold assy A B Manifold assy with by-pass valve Manifold assy without by-pass valve 09 10 11 12 7 8 9 10 11 12 13 14 12,45 26,38 33,59 14,26 30,15 38,51 16,06 34,09 43,26 18,03 37,85 48,18 19,83 41,79 53,26 21,63 45,72 58,17 23,6 25,4 49,65 63,25 53,59 68,17

available standard design

13 14

Page No. 23

CONCRETE MIXER SPEED REDUCERS (PLANETARY GEAR BOXES) Ep Series

MODEL Gear ratio Input speed Drum speed Max. drum driving moment : with hydraulic motor 70cm3/rev. with hydraulic motor 90cm3/rev. Max. drum volume with HM70 Max. drum volume with HM90 Hydraulic motors teeth number Water pump gearing Max. speed of water pump Max. power of water pump Oil quantity up to eye-sight Oil viscosity Oil quality ref. Sound pressure level Weight

PARAMETER rpm rpm kNm kNm m3 m3 rpm l/min. l (Liter)

PM60 PM60 WP PM70 PM70 WP PM80 PM80 WP 1:96,2 1:96,2 1:138,7 1:138,7 1:138,7 1:138,7 1100 -1350 1100 -1350 1400-1900 1400-1500 1400-1900 1400-1500 11-14 42 54 7 9 21 7 11-14 42 54 7 9 21 2,333 3150 500 7 ISO VG 320 11-14 70 10 21 8 11-14 70 10 21 2,333 3500 600 8 11-14 78 15 21 8 (CLP oil DIN 51517/3) AH408.802. 990-001 EN 82 290 82 295 82 292 82 297 11-14 80 15 21 2,333 3500 600 8

dB(A) Kg

75 275

75 280

Ordering example : PM60 reducer without water pump drive

PM60 WP - reducer with water pump drive

CONCRETE MIXER SPEED REDUCERS (PLANETARY GEAR BOXES) Ep Series

DIMENSION DRAWING

513,500 pouring plug 200 20 17 70 200 460

40

outlet for hydraulic motor 21 teeth

23

55,500 assembly angle fixation screw M12x20

7,900

18

14,900

110

153 190
oil control gauge

127H7

31.75 H11

15

LK

500/24x15 530h9

16

seal O ring124x4

40

CONCRETE MIXER SPEED REDUCERS (PLANETARY GEAR BOXES) Ep Series

23 248.6 8/

54

outlet plug

20

406

oil outlet plug

36,3

00

filling plug

33
70

53 67

187

200 460

200

CONCRETE MIXER SPEED REDUCERS (PLANETARY GEAR BOXES) Ep Series

Page No. 27

DIMENSION DRAWING

518
pouring plug

460 200 20 70 200

outlet for hydraulic motor 21 teeth

79,500

14

12,500

190 23
assembly angle

18

110

153

17

40

fixation screw M12x20

118,500

oil control gauge

127H7

31.75H11

3
3

15

LK

500 / 24x15

530h9

162

CONCRETE MIXER SPEED REDUCERS (PLANETARY GEAR BOXES) Ep Series

40 406

seal O ring124x4

filling plug

54

oil outlet plug

20

36.3

outlet plug

33

248.6 8/

53

70 200 200

67

187
460

E R p rs t. t .o U O a t P y LdC .

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