Product Manual

Hydraulic Hi / Lo Gear Pump Model CBT
22 and 28 GPM
ALA Industries, LTD 3410 Delta Dr. Portage, IN 46368
Phone: [phone] Web: grh-usa.com
Technical Specifi cations
Flow Rate (gpm) = Displacement (in
3
/rev) X Speed (rpm) / 231 Volumetric ef ciency % ≥93
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 psi to 900 psi (preset at approx. 850 psi). The
HI/LO pump is all cast iron. 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.
Model
Flow at
3600 rpm
(gpm)
Displacement
in
3
/rev (cm
3
/rev)
Pressure
(psi)
Speed
(rpm)
Weight
(lbs)
LO HI LO HI
22 0.465 (7.63) 0.93 (15.26) 400/900 3000 3600 18.6
28 0.465 (7.63) 1.395 (22.88) 400/900 3000 3600 19.7
Installation Data
Recommended working conditions:
FILTRATION: 25 micron or better
OIL VISCOSITY: 7 - 700 cSt
INLET PRESSURE: 12 - 32 psi abs.
OIL TEMP: -25° - 80°C (-12° - 175°F)
AMBIENT TEMP: -22° - 55°C (-8° - 130°F)
CBT - 15.2 / 7.6
CBT - 22.9 / 7.6
Category/Group Displacement Opons
Ordering Example: CBT - 15.2/7.6 -
Category + Group
Displacement
Opons
CBT
15.2 / 7.6 = 22 GPM
22.9 / 7.6 = 28 GPM
C= ALL CAST
HI/LO GEAR PUMP
ALL CAST DESIGN
3000 PSI PRESSURE
SAE A Pilot (3.25”)
5/8” Keyed Sha
1" inlet tube & 1/2" NPT outlet (8-16 GPM)
1" NPT inlet 3/4" NPT outlet (22-28 GPM)
C=
All Castt