Parker Medium Pressure Industrial Pumps – PD Series

Parker PD Series is a open-Circuit Piston Displacement pump constructed for medium pressure industrial applications. At HYDRAULIC HUB, we provide sales, maintenance and repair services to keep your pump running at their peak performance.

Series : Parker PD Series
Axial Piston Variable Displacement Pump
Model : PD18, PD28, PD45, PD60, PD75, PD100, PD140.
Nominal Pressure 250 Bar (Psi 3,050)
Maximum Pressure 280 bar (4,060 psi)
Speed range of 600 – 1,800 rpm
Used in a wide range of applications – • Pressing, • Industrial molding, • Offshore cranes, • Material Handling Equipment, • Oil & Gas.

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Parker Medium Pressure Industrial Pumps - PD Series is designed with variable displacement axial piston layout for open-circuit applications. These pumps are highly used in industrial and mobile applications, with a maximum working pressure up to 280 bar, 4000 psi. PD Series features with elastomer seals that prevent external leakage and multiple case drain ports for multiple mounting. With hydrostatically balanced swash plates and roller shaft bearings, these pumps ensure durability, minimizing friction and maintenance requirements.

PD Series is designed with modular control options for a wide range of operations. These controls adjusts pump output to system requirements including, pressure compensators, load-sensing, and remote-operated pressure limiters. This reduces power consumption, while load-sensing controls maintain a consistent pressure differential, cutting horsepower use and boosting efficiency. For advanced systems, electronic proportional controls allow precise displacement and pressure adjustments through external commands.

With adjustable displacement stops and through-drive features, the PD Series is easy to service and adaptable. Compact and powerful, these pumps meet industrial demands. These pumps offer reliable, efficient performance while controlling heat and energy use.

Technical Specifications

Maximum Vacuum Flow Rate: N/A

Technology: Hydraulic

Displacement: 140 cm³/rev, 8.5 in³/rev

Drain Option: Yes

Circuit Path: OPEN

Control Method: Pressure Limiter, Load Sense, Electronic Control, Unloading, Proportional, Fan Drive

Filter Included: No

Maximum Displacement: 140 cm³/rev, 8.5 in³/rev

Maximum Fluid Temperature: 95 °C, 200 °F

Maximum Noise Level: 87 dBA

Radial Load Capacity: 160-594 lb-ft

Maximum Kinematic Viscosity: N/A

Weight: 14-82 kg, 30-180 lb

Mounting Option: SAE, ISO

Port Type: FLANGE, STRAIGHT THREADED

Pump Type: Piston

Sensor Type: Displacement & Pressure

Thru-Drive Capability: Yes

Operating Pressure: 280 bar, 4000 psi

Flow Rate: 250 L/min, 66 Gal/min

Body Material: Cast Iron

Charge Pump Included: No

Configuration: Single, Tandem, Multiple

Energy Recovery Capability: Yes

For Fluid Type: Standard Hydraulic Fluid

Maximum Flow Rate: 66 Gal/min, 250 L/min

Minimum Fluid Temperature: -40 °C, -40 °F

Maximum Operating Pressure: 280 bar, 4000 psi

Maximum Operating Speed: 1800 RPM

Minimum Kinematic Viscosity: N/A

Media: Hydraulic / Liquid

Port Connection: SAE, ISO, BSPP

Port Location: Side Ports, Rear Ports, Opposing Ports

Direction of Rotation: Clockwise, Counter Clockwise

Shaft Type: SAE, ISO

Technical Data

Model	P1/PD 018	P1/PD 028	P1/PD 045	P1/PD 060	P1/PD 075	P1/PD 085	P1/PD 100	P1/PD 140
Maximum Displacement, cm3/rev cu.in./rev	18 1.10	28 1.71	45 2.75	60 3.66	75 4.58	85 5.19	100 6.01	140 8.54
Outlet Pressure – Continuous	280 bar (4060 psi)					250 bar (3600 psi)	280 bar (4060 psi)
Intermittent*	320 bar (4640 psi)					300 bar (4350 psi)	320 bar (4640 psi)
Peak	350 bar (5075 psi)					320 bar (4640 psi)	350 bar (5075 psi)
P1 Maximum Speed (1.3 bar abs inlet), rpm	3500	3400	3100	2800	2700	2700	2500	2400
P1 (1.0 bar abs inlet), rpm	3300	3200	2800	2500	2400	2400	2250	2100
P1 (0.8 bar abs inlet), rpm	2900	2900	2400	2200	2100	2100	1900	1800
PD Maximum Speed (1.0 bar abs inlet), rpm	1800
PD (0.8 bar abs inlet), rpm	1800
Minimum Speed, rpm	600
Inlet Pressure – Maximum	11 bar absolute (160 psi)
Rated	1.0 bar absolute (14.5 psi
Minimum	0.8 bar absolute (11.6 psi)
Case Pressure – Peak, bar	4.0 bar absolute (58 psi) and less than 0.5 bar (7.3 psi) above inlet pressure
Rated, bar	2.0 bar absolute (29 psi) and less than 0.5 bar (7.3 psi) above inlet pressure
Fluid Temperature Range, °C °F	-40 to +95 -40 to +203
Fluid Viscosity – Rated, cSt	7 to 160
Optimum Range, cSt	14-50 cSt.
Max. Intermittent, cSt	5000 (for cold starting)
Min. Intermittent, cSt	5
Fluid Contamination – Rated, ISO	20/18/14
Weight – End Port, kg (lb)	13.4 (29.5)	17.7 (39.0)	23 (50)	29 (64)	30 (66)	30 (66)	51 (112)	66 (145)
Side Port, kg (lb)	14.2 (31.3)	18.1 (40.0)	24 (52)	30 (67)	31 (68)	31 (68)	53 (117)	67 (147)
Thru-Drive, kg (lb)	15 (34)	22 (48)	27 (59)	34 (75)	35 (77)	35 (77)	55 (121)	82 (180)
Moment of Inertia kg·mm2	760	1555	3208	4548	5041	5041	12027	21400
Moment of Inertia Thru-Drive, kg·mm2	793	1618	3268	4687	5207	5207	12402	22343

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