Parker Variable Displacement Axial Piston Pump For Closed Circuit Applications – C Series

Parker C Series Variable Displacement Axial Piston Pumps are engineered for heavy-duty mobile equipment applications. These pumps have a 6,090 psi pressure rating, small footprint and sturdy design. At HYDRAULIC HUB, we offer a wide range of services including sales, repair and maintenance of Parker Variable Displacement Axial Piston Pump For Closed Circuit Applications – C Series.

Series : Parker C Series
Axial Piston Variable Displacement Pumps
Model : C055, C081, C136.
Nominal Pressure 420 Bar (Psi 6090)
Maximum Pressure 450 Bar (Psi 6525)
Maximum Speed of 3,400 rpm
Temperature range of -13 to 194ºF (-25 to 90ºC)
Used in a wide range of applications – • Drill rigs, • Agriculture Machinery, • Construction Equipment, • Material Handling Equipment, • Forestry Equipment

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Parker Variable Displacement Axial Piston Pump For Closed Circuit Applications C Series are constructed for heavy-duty mobile equipment applications. These pumps are designed in durable construction and compact size, which makes them an ideal solution for limited space installation. These products are available in multiple displacements/sizes C055 | C081 | C136, with a nominal pressure rating of 6,090 psi.

The flow direction of the pump is controlled by a rugged swash plate and bearing design; the position of the swash plate in the pump determines flow direction in the circuit. Parker variable displacement pumps are integrated with the charge pump, whose function is to provide oil into the closed circuit. It is a fixed displacement pump, usually a gerotor unit. To compensate for losses and supply the pump displacement controls with control flow.

Parker C series closed-circuit pumps provide reliability and higher uptime. These rugged pumps are developed with a wide range of controls and proven protection from pressure overloads for increased performance, all while maintaining a small footprint for added flexibility. Additionally, these pumps are available with multiple displacement options, which enables them to perform with a wide range of control configurations.

Technical Specifications

Operating Pressure: 420 bar, 6090 psi

Technology: Hydraulics

Flow Rate: 0 to 350 L/min

Displacement: 55 cm3/rev, 81 cm3/rev, 136 cm3/rev

Product Style: Piston Pump

Body Material: Cast Iron

Drain Option: Yes

Charge Pump Included: Yes

Circuit Path: Closed

Configuration: Single, Tandem

Control Method: Yes

Energy Recovery Capability: Yes

Filter Included: Yes

For Fluid Type: Standard Hydraulic Fluids

Maximum Displacement: 136 cm3/rev, 8.3 inch3/rev

Maximum Flow Rate: 102 gal/min, 387 L/min

Maximum Fluid Temperature: 90 °C, 194 °F

Minimum Fluid Temperature: -25 °C, -13 °F

Maximum Noise Level: n/a

Maximum Operating Pressure: 420 bar, 6090 psi

Radial Load Capacity: 470 kg, 1035 lb

Maximum Operating Speed: 3400 RPM

Maximum Kinematic Viscosity: 3650 SUS

Minimum Kinematic Viscosity: 60 SUS

Weight: 86 kg (Max), 190 lb (Max)

Media: Hydraulic, Hydraulic Fluids

Mounting Option: SAE

Port Connection: SAE, ISO, BSPP

Port Type: Flange, Straight Threaded

Port Location: Side Ports

Pump Type: Piston, Hydrostatic, Variable

Direction of Rotation: Clockwise, Counterclockwise

Shaft Type: SAE, DIN

Thru-Drive Capability: Yes

Technical Data

C Series Technical Specifications
Frame	C055	C081	C136
Displacement CC/Rev (CIR)	55 (3.35)	81 (4.94)	136 (8.3)
Input Speed (RPM)
Continuous	3800	3400	2850
Intermittent	4000	3600	3250
Minimum	500	500	500
System Pressure Bar (PSI)
Continuous	420 (6090)
Peak*	450 (6525)*
Charge Inlet Pressure Bar (PSI) Absolute
Minimum	.8 (11.6)
Cold Startup	.5 (7.25
Case Pressure Bar (PSI)
Maximum Continuous	4 (58
Cold Startup	6 (86)
Fluid Viscosity cSt
Operating	15 to 40
Minimum	10
Cold Startup	800
Fluid Operating Temperature °F (°C)	-13 to 194°F (-25 to 90°C)
Maximum Permissible Fluid Cleanliness Per ISO 4406:1999	20/18/15
Power Consumption kW (HP)
Continuous	146 (196)	170 (228)	259 (347)
Peak	165 (221)	203 (272	343 (459)
Maximum Torque at Maximum Displacement Nm (lb-ft)
Continuous	368 (271)	478 (352)	858 (632)
Peak	394 (291)	537 (396)	980 (722)
Moment of Inertia Kg-m² (lbf-ft²)	.0064 (.156)	.014 (.34)	.040 (.96)
Approximate Weight kg (lb)	46 (101)	51 (113)	86 (190)

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