Chief Group 3 Gear Pump (3PG) - 3.11 CID (51CC), 7/8" Key Shaft, SAE-B 2-Bolt Mount, SAE-20/16 Ports, CW rotation

Constructed of an aluminum center housing and cast-iron end plates, the Chief 3PG series is a high-pressure hydraulic gear pump with seven displacement sizes from 1.34 to 3.66 in3/rev (22-60cm3/rev). The standard mounting flange is SAE B—2 bolt, and the standard shaft is a 7/8" diameter straight with a 1/4" key. Additional shaft options are available.

The recommended working conditions are as follows:

Filtration: 25 microns or better
Oil Viscosity: 6 to 200 cSt
Ambient Temperature: -8 to 130° F (-22 to 55° C)
Oil Temperature: -12 to 175° F (-25 to 80° C)
Inlet pressure 12 to 32 PSI absolute
Specific model features:
Model code: GP30-51D-78KB2
CID: 3.11 in3/rev (51 cm3/rev)
GPM: 22.3 @ 1800 RPM
RPM: 2000 (rated), 2400 (max)
PSI: 3625 (rated), 4060 (max)
Shaft: 7/8” Straight, 1/4” Key
Mounting flange: SAE B—2 bolt
Ports: SAE 20 /16
Rotation: Clockwise

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