SINGLE STAGE PUMPS

• The series 500/50R modular hydraulic hand pumps are designed for use with an external hydraulic reservoir in a wide variety of demanding applications.
• The 500 series pumps are designed for use in systems, which utilize an external relief valve.
• The 50R pumps incorporate an integral, factory set, tamper resistant relief valve for those applications where external relief is impractical or undesirable.

STANDARD FEATURES

• All steel construction for rugged use.
• Rod wiper (except 1-1/2" bore) to exclude dirt.
• All o-ring seals – no fiber or metal seals to leak.
• Self-retained release screw, which cannot be accidentally removed.
• Capable of operating in any mounting orientation.
• Heat treated pins and linkages for extended life.
• Ground pistons to prevent seal extrusion.
• Nitrotec treated pistons for corrosion resistance.

OPTIONAL FEATURES

• Optional seals for pumping alternate fluids.
• Manifold mounting for inlet and/or outlet.
• Operating handle length – 18 or 36 inches for various handle forces.
• Custom designs for your particular application requirements.

SINGLE STAGE ORDERING EXAMPLE

• Model 500-030
  Maximum Rated Pressure: 

  10,000

  
  

  Piston Diameter: 

  3/8

  
  

  Cubic Inches/Stroke: 

  .14

  
  

  18" Handle Force per 100 PSI: 

  1.1

  
  

  24" Handle Force per 100 PSI: 

  .8

  36" Handle Force per 100 PSI: 

  .5

  Weight: 

  11
• Model 500-040
  Maximum Rated Pressure:

  10,000

  
  

  Piston Diameter:

  1/2

  
  

  Cubic Inches/Stroke:

  .26

  
  

  18" Handle Force per 100 PSI:

  1.9

  
  

  24" Handle Force per 100 PSI:

  1.4

  36" Handle Force per 100 PSI:

  .9

  Weight:

  11
• Model 500-050
  Maximum Rated Pressure:

  5,000

  
  

  Piston Diameter:

  5/8

  
  

  Cubic Inches/Stroke:

  .40

  
  

  18" Handle Force per 100 PSI:

  2.9

  
  

  24" Handle Force per 100 PSI:

  2.2

  36" Handle Force per 100 PSI:

  1.5

  Weight:

  11
• Model 500-060
  Maximum Rated Pressure:

  3,500

  
  

  Piston Diameter:

  3/4

  
  

  Cubic Inches/Stroke:

  .58

  
  

  18" Handle Force per 100 PSI:

  4.3

  
  

  24" Handle Force per 100 PSI:

  3.2

  36" Handle Force per 100 PSI:

  2.1

  Weight:

  11
• Model 500-080
  Maximum Rated Pressure:

  2,000

  
  

  Piston Diameter:

  1

  
  

  Cubic Inches/Stroke:

  1.03

  
  

  18" Handle Force per 100 PSI:

  7.6

  
  

  24" Handle Force per 100 PSI:

  5.8

  36" Handle Force per 100 PSI:

  3.8

  Weight:

  11
• Model 500-120
  Maximum Rated Pressure:

  1,000

  
  

  Piston Diameter:

  1-1/2

  
  

  Cubic Inches/Stroke:

  2.10

  
  

  18" Handle Force per 100 PSI:

  17.1

  
  

  24" Handle Force per 100 PSI:

  12.8

  36" Handle Force per 100 PSI:

  8.5

  Weight:

  12

- WARNING -

NO internal relief valve is supplied with these pumps unless ordered as an OPTION. Therefore, for safety purposes, it is necessary to plumb a relief valve, on the outlet of these pumps, which is appropriately set below the lowest maximum rating of any system component.

500 Series dimensional data is available in the 500 Series Catalog.

TWO STAGE PUMPS

• The series 550/55R two-stage modular hydraulic hand pumps are designed for use with an external hydraulic reservoir. The two-stage, or "HI-LOW", feature allows the operator to displace a larger amount of fluid at lower pressures. It automatically shifts over to a smaller displacement for higher pressures. This feature dramatically reduces cycle times, and number of strokes required, for many applications.
• The 550 series pumps are designed for use in systems that utilize an external relief valve.
• The 55R series pumps incorporate a factory set, tamper resistant relief valve for those applications where an external relief is impractical or undesirable.

STANDARD FEATURES

• All Steel construction for rugged use. (The low-pressure tube is hard coat anodized aluminum)
• All o-rings – no fiber or metal gaskets to leak.
• Self-retained release screw that cannot be accidentally removed.
• Heat-treated pins and linkages for extended life.
• Ground pistons to prevent seal extrusion.
• Nitrotec treated pistons for corrosion resistance.
• 500 psig standard cross-over between large and small bores.

OPTIONAL FEATURES

• Optional seals for pumping alternate fluids.
• Manifold mounting for inlet and/or outlet.
• Operating handle length – 18 or 36 inches for various handle forces.
• Custom designs for your particular application requirements.

TWO STAGE ORDERING EXAMPLE

• Model 550-124
  Maximum Rated Pressure: 

  5,000

  
  

  Low Pressure Piston Diameter: 

  1-1/2

  
  

  High Pressure Piston Diameter: 

  1/2

  
  

  Cubic Inches/Stroke (Low): 

  2.1

  
  

  Cubic Inches/Stroke (High): 

  .26

  Weight: 

  12
• Model 550-125
  Maximum Rated Pressure: 

  5,000

  
  

  Low Pressure Piston Diameter: 

  1-1/2

  
  

  High Pressure Piston Diameter: 

  5/8

  
  

  Cubic Inches/Stroke (Low): 

  2.1

  
  

  Cubic Inches/Stroke (High): 

  .40

  Weight: 

  12
• Model 550-126
  Maximum Rated Pressure: 

  3,500

  
  

  Low Pressure Piston Diameter: 

  1-1/2

  
  

  High Pressure Piston Diameter: 

  3/4

  
  

  Cubic Inches/Stroke (Low): 

  2.1

  
  

  Cubic Inches/Stroke (High): 

  .58

  Weight: 

  12

- WARNING -

NO internal relief valve is supplied with these pumps unless ordered as an OPTION. Therefore, for safety purposes, it is necessary to plumb a relief valve, on the outlet of these pumps, which is appropriately set below the lowest maximum rating of any system component.

500 Series dimensional data is available in the 500 Series Catalog.