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U.S. (Metric)
Volume .............................................................Up to 74.8 GPM ...... (283 LPM)
Discharge Pressure .........................................Up to 2900 PSI........ (200 bar)
Speed ...............................................................Up to 580 RPM ....... 580 RPM
Inlet Pressure ...................................................Up to 29 PSI............ (2.0 bar)
Plunger Diameter.............................................2.17” ........................ 55mm
Plunger Stroke ................................................. 2.83” ........................ 72mm
Crankshaft Diameter .......................................2.76” ........................ 70mm
Key Width ........................................................ 0.55” ........................ 14mm
Crankshaft Mounting ......................................................................... Either side
Shaft Rotation .................................................................................... Top of pulley
........................................................................................................... Towards manifold
Temperature of Pumped Fluids........................Up to 86
o
F .............. (30
o
C)
Inlet Ports .......................................................................................... (2) 3" BSP
Discharge Ports ................................................................................. (2) 1-1/4" BSP
Weight .............................................................. 794 lbs. .................... (360kg)
Crankcase Oil Capacity ...................................3.7 Gal. .................... (14.0 liters)
Fluid End Material............................................Nickle plated Spheroidical Cast Iron
Specifications
Model GP8155-R
Consult the factory for special requirements that must be met if the pump is to
operate beyond one or more of the limits specified above.
HORSEPOWER RATINGS:
The rating shown are the power
requirements for the pump. Gas
engine power outputs must be
approximately twice the pump
power requirements shown above.
We recommend a 1.15 service
factor be specified when selecting
an electric motor as the power
source. To compute specific pump
horsepower requirements, use the
following formula:
GPM X PSI
3
= HP
1450
GP8155-R HORSEPOWER
REQUIREMENTS
RPM GPM 500 PSI 1000 PSI 2000 PSI 3000 PSI
300 38.7 13.3 26.7 53.4 80.1
400 51.6 17.8 35.6 71.2 106.8
500 64.5 22.2 44.5 89.0 133.4
580 74.8 25.8 51.6 103.2 154.8
SPECIAL NOTE:
The theoretical gallons per revolution (gal/rev) is 0.129.
To find specific outputs at various RPM, use the formula:
GPM = 0.129 x RPM
10
15) Replace seal retainer (33), seal (32) and clip ring (33B). Seal (32) must always be installed
so the seal lip on the inside diameter faces the oil. Possible axial float of the seal retainer (33)
to be compensated with shims (33C). Re-assemble the seal sleeves (39) and plunger pipes
(36B). Tighten the tension screw (36C) to 30 Ft-lbs. Replace valve casing and tighten hexagon
GP8155-R PUMP REPAIR INSTRUCTIONS
16) Mount cooling plate (K1) and gear cover (K3) with their respective seals (K2). When assembling
the cooling circuit line, make sure that the oil cooler connection (K7) is always joined to the
upper connection (K3) of the gear cover.
Heat ball bearings (74 and 75) first before pressing them on to the pinion. Press the cogwheel
slightly on to the crankshaft so that the pinion (69) together with the ebaring (74) can be inserted.
Move the pinion (69) against the cogwheel and make them mate perfectly when mounting. Then
carefully tap the cogwheel and the pinion simultaneously on to the crankshaft and into the bearing
seat. Fit fitting disc (69) and secure screw (72) with Loctite. Fit the seal (76) on to the cylindrical
pins (68).
Push the gear cover (66) carefully onto the bearing (75). Make sure that the radial shaft seal (73)
does not get damaged during fitting onto the pinion.
Before putting into operation again, turn the reduction gear shaft by hand at least
four full turns to make sure the gear is correctly aligned.