Marzocchi hydraulic gear pump GHP2A-S-30-EP, GHP1A-S-7-EP
Model Code Explanation
|
Code
|
Description
|
|
GHP
|
Series designation (High Performance External Gear Pump)
|
|
1/2
|
Group size (1: smaller, 2: medium)
|
|
A
|
Configuration: SAE A 2-bolt flange + shaft C1 (keyed) + ports FA (SAE) + standard seals
|
|
S
|
Rotation: Counterclockwise (Left Hand)
|
|
7/30
|
Displacement code (7: ~7.0 cm³/rev, 30: ~21.1 cm³/rev)
|
|
EP
|
Seal type: Nitrile rubber (NBR) seals
|
GHP1A-S-7-EP Specifications
Basic Parameters
|
Parameter
|
Value
|
|
Pump Type
|
External Gear Pump
|
|
Displacement
|
7.0 cm³/rev (0.427 in³/rev)
|
|
Flow Rate
|
10.0 l/min (2.64 US gal/min) @ 1500 rpm
|
|
Flow Rate
|
12.0 l/min (3.17 US gal/min) @ 1800 rpm
|
|
Max Pressure
|
280 bar (4061 psi)
|
|
Max Pressure (Intermittent)
|
295 bar (4278 psi)
|
|
Max Pressure (Peak)
|
310 bar (4496 psi)
|
|
Max Speed
|
4000 rpm
|
|
Rated Speed
|
2000 rpm
|
|
Rotation
|
Counterclockwise (S)
|
Mechanical Specifications
|
Parameter
|
Value
|
|
Mounting
|
SAE A 2-bolt flange
|
|
Shaft Type
|
Keyed, 5/8″ (15.875 mm) diameter
|
|
Shaft Key
|
Woodruff key (standard)
|
|
Ports
|
#12 SAE inlet, #10 SAE outlet
|
|
Body Material
|
Aluminum
|
|
Flange/Cover Material
|
Cast Iron
|
|
Seals
|
Nitrile rubber (EP)
|
|
Temperature Range
|
14°F to 176°F (-10°C to 80°C)
|
|
Viscosity Range
|
6-380 cSt (recommended 25-50 cSt @ 50°C)
|
|
Inlet Pressure
|
-0.3 to +2 bar (4.35 to 29 psi)
|
GHP2A-S-30-EP Specifications
Basic Parameters
|
Parameter
|
Value
|
|
Pump Type
|
External Gear Pump
|
|
Displacement
|
21.1 cm³/rev (1.288 in³/rev)
|
|
Flow Rate
|
30.1 l/min (7.95 US gal/min) @ 1500 rpm
|
|
Flow Rate
|
36.1 l/min (9.54 US gal/min) @ 1800 rpm
|
|
Max Pressure
|
230 bar (3336 psi)
|
|
Max Pressure (Intermittent)
|
245 bar (3553 psi)
|
|
Max Pressure (Peak)
|
260 bar (3771 psi)
|
|
Max Speed
|
3200 rpm
|
|
Rated Speed
|
2000 rpm
|
|
Rotation
|
Counterclockwise (S)
|
Mechanical Specifications
|
Parameter
|
Value
|
|
Mounting
|
SAE A 2-bolt flange
|
|
Shaft Type
|
Keyed, 5/8″ (15.875 mm) diameter
|
|
Shaft Key
|
Woodruff key (standard)
|
|
Ports
|
#12 SAE inlet, #10 SAE outlet
|
|
Body Material
|
Aluminum
|
|
Flange/Cover Material
|
Cast Iron
|
|
Seals
|
Nitrile rubber (EP)
|
|
Temperature Range
|
14°F to 176°F (-10°C to 80°C)
|
|
Viscosity Range
|
6-380 cSt (recommended 25-50 cSt @ 50°C)
|
|
Inlet Pressure
|
-0.3 to +2 bar (4.35 to 29 psi)
|
General Features
-
High overall efficiency (typically >90%)
-
Suitable for heavy-duty industrial and mobile applications
-
Low noise operation
-
Robust construction with aluminum body and cast iron flange/cover
-
Two-lip shaft seal as standard
-
Standard accessories: woodruff key, M12x1.5 hexagonal nut, split lock washer
Would you like me to add a direct performance comparison table (flow, pressure, speed) between GHP1A-S-7-EP and GHP2A-S-30-EP for quick reference?
