GRH has a manufacturing base in Jiangsu and an overseas marketing center in Shanghai. It mainly produces: electro-hydraulic proportional valve, hydraulic gear pump, gear motors, flow divider, orbital motor, power unit, hydraulic system and other products.

Hydraulic Hi/Lo Gear Pump Model CBT 8 - 16 GPM

Model CBT is a Hi/Lo hydraulic gear pump offers maximum pressures of 900 psi for the low pressure pump and 3000 psi for the high pressure pump. The change from Lo to Hi pressure is automatic with the Lo pressure preset from 400 to 900 psi (preset at approx.850 psi).

Applications for Hi/Lo pumps include log splitters, presses, etc. where rapid movement of the cylinder at low pressure is required prior to automatically switching to the high pressure mode to meet load requirements.

Recommended Working Conditions
Filtration: 25 micron or better
Oil Viscosity: 7-700 cSt
Inlet Pressure: 12-32 psi absolute
Oil Temp: -25°-80°C(-12°-175°F)
Ambient Temp: -22°-55°C(-8°-130°F)

Technical Specifications
Flow Rate (gpm) = Displacement(in³/rev) X Speed (rpm) /231
Volumetric efficiency ≥93%
Category and Group: CBT
Displacement: 13.0/3.6
Material: All Cast