Hydraulic HousePumps & MotorsPARKER

PARKER PGP 620 Series Cast Iron Gear Pump

Parker PGP-620 series cast-iron gear pump for heavy-duty hydraulic applications, offering high pressure capability and long service life. Available from ASP Group with authorized service and original spare parts.

Maximum working pressure up to 275 bar (3,989 psi) in continuous operation.
Rotational speed from 500 to 3,500 rpm, depending on displacement and configuration.
Maximum flow rate up to 156 L/min.

Technical parameters

Maximum working pressure: up to 275 bar (3,989 psi) in continuous operation.
Rotational speed: from 500 to 3,500 rpm, depending on displacement and configuration.
Maximum flow rate: up to 156 L/min.
Inlet pressure: 1.0 bar (15 psi) continuous.
Operating temperature: fluid temperature from -20°C to +80°C; during cold start it withstands ambient temperatures down to -40°C.
Fluid viscosity: recommended range from 15 to 75 cSt (mm²/s). Absolute limits are from 8 to 1,000 cSt.
Compatible fluids: standard mineral oils, biodegradable oils, fire-resistant fluids, and water-glycol mixtures.
Configuration: available as single or sectioned versions, including tandem and triplex arrangements with common or separate inlet ports.
Rotation direction: clockwise, counterclockwise, or bi-rotational.
Mounting flange: standard SAE 2-bolt or 4-bolt.
Drive shaft: SAE splined (10T, 11T, 13T, 15T), keyed cylindrical, or tapered.
Ports: SAE flange connection, O-ring boss (UNF), or BSP thread.
Seals: NBR nitrile, FPM/FKM Viton, or dual combination.
Integrated valves: pressure-control, load-sense priority, or electromagnetic unloading valves can be integrated.

Key Parameters

Pump Model Size	Displacement (cm³/rev)	Max. Continuous Pressure (bar)	Maximum Speed (RPM)
PGP620A-0160	16.0	275	3500
PGP620A-0190	19.0	275	3500
PGP620A-0210	21.0	275	3500
PGP620A-0230	23.0	275	3500
PGP620A-0260	26.0	275	3500
PGP620A-0290	29.0	275	3500
PGP620A-0330	33.0	275	3500
PGP620A-0360	36.0	250	3500
PGP620A-0370	37.0	250	3500
PGP620A-0410	41.0	220	3500
PGP620A-0500	50.0	210	3000
PGP620A-0520	52.0	210	3000

01The Parker PGP620 Series cast-iron gear pump is a fixed-displacement, high-performance hydraulic unit. Its engineering design provides the following main advantages:
02High structural durability
03Housing locking: the patented two-piece interlocking system reduces housing deformation under high pressure.
04Cast-iron construction: the robust cast-iron material is wear-resistant even in harsh mining and heavy construction conditions.
05Journal bearings: heavy-duty journal bearings ensure long service life under maximum load.
06High fluid efficiency
07Pressure balancing: bronze thrust plates automatically adjust clearances, increasing volumetric efficiency.
08Power density: despite its compact size, the pump delivers very high hydraulic output power.
09Low vibration and noise: the 12-tooth gear mechanism reduces pressure pulsation and makes the system significantly quieter.
10Modularity and flexibility
11Multi-section assembly: several pumps can be coupled together as tandem or triplex units driven by a single shaft.
12Integrated valves: relief, anti-cavitation, or solenoid valves can be integrated directly into the housing.
13Common inlet: multi-section models can draw fluid from one common inlet line, reducing the need for additional piping.