HYDROSTATIC TRANSMISSIONS FOR MOBILE AND INDUSTRIAL APPLICATIONS

GENERAL INFORMATION

A hydrostatic transnissions consists of a hydraulic piston pump and motor, typically used as the main drive system on modern construction and many other industrial equipments. Axial piston variable displacement pumps are of swashplate construction with variable displacement , and are intended for closed loop circuit. The flow rate is proportional to the pump's driven speed and is determined by the swashplate angle. The later is infinitely adjustable between zero and maximum displacement. Flow direction is reversed by tilting the swash plate to the opposite side of the neutral or zero displacement position. Axial piston fixed displacement motors are of swashplate construction with present 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 circuit which port the fluid enters to the motor.

HEAVY DUTY HYDROSTATIC TRANSMISSIONS
Series 20
Closed circuit

Pumps

Pumps AXIAL PISTON VARIABLE DISPLACEMENT PUMPS
GR
Sizes 		DISPLACENENT
( cm3 - rev) 		MAX. OPERATING
PRESSURE (MPa) 		MAX. SPEED
( Rpm ) 		POWER
( Kw ) 		WEIGHT
( kg )
033 33,3 35 3590 69,7 45
052 51,6 35 3100 93,3 55
070 69,8 35 2810 114,4 63
089 89,0 35 2590 134,4 78
119 118,7 35 2350 162,7 124
166 165,8 35 2100 203,1 164
334 334,4 35 1670 325,1 270

Motors

Motors AXIAL PISTON FIXED DISPLACEMENT MOTORS
MF
Sizes 		DISPLACENENT
( cm3 - rev) 		MAX. OPERATING
PRESSURE (MPa) 		MAX. SPEED
( Rpm ) 		POWER
( Kw ) 		WEIGHT
( kg )
033 33,3 35 3590 69,7 30
052 51,6 35 3100 93,3 35
070 69,8 35 2810 114,4 40
089 89,0 35 2590 134,4 47
119 118,7 35 2350 162,7 70
166 165,8 35 2100 203,1 124
334 334,4 35 1670 325,1 197

HEAVY DUTY FEATURES / BENEFITS 

Advanced cylinder barrel design - permits high speed and pressure
Drive shafts             - a wide variety of options are available to suit every need.
High strenght swashplate on variable pumps / motors - resist deflection under high load.
Charge pump on pumps     - gear type or gerotor type,several displacement options are available to suit the needs of every aplications.
Bi - metal bearing plate - has steel for high speed and pressure. Bronze provides greater bearing properties.
Valve plate              - hardened steel for long life.
C - pad  rear mount      - available on variable pumps for tandem units or  for a throught shafts.
Controls                 - a wide variety of control options are available for pumps and motors to meet aplication needs.
 

Standart shaft end for models                                Standart shaft end for 
033, 052, 070, SERIES 20                                     model 089, SERIES 20
Shafts 
DEPENDENCES OF EFFICIENCY	                              DEPENDENCES OF EFFICIENCY,	
FLOW AND OUTPUT ON THE SPEED 	                              FLOW AND OUTPUT ON THE SPEED
OF HYDRAULIC PUMP FOR	                                      OF HYDRAULIC MOTOR FOR
SIZE 070, SERIES 20	                                      SIZE 070, SERIES 20
Output

DIMENSIONS OF PUMPS AND MOTORS SERIES 20

MODELS LENGHT (mm) WIDTH (mm) HEIGHT (mm)
SIZE GR MK GR MK GR MK
033 340 340 235 190 269 146
052 365 360 259 190 283 147
070 381 380 268 194 286 194
089 395 395 297 194 305 194
119 503 442 326 214 346 204
166 560 542 346 285 381 254
334 568 603 409 298 448 298
Dimensions <

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