High Low Hydraulic Gear Pump
HIGH-LOW TANDEM GEAR PUMPS
Many systems require a high volume at low pressure for rapid traverse of a vise or tool, and then low volume, high pressure for clamping or feeding. This can be accomplished by a hi-lo circuit using two pumps. During rapid traverse, both pumps supply the system. When pressure rises during clamping or feed, the large-volume main pump unloads and the small pump maintains pressure. These gear pumps offer the advantage of requiring lower power of the motor.
Hydropack high-low tandem gear pumps are special pumps with integrated valves as shown in the hydraulic circuit above:
1) First stage high pressure
2) Second stage low pressure
3) Unloading valve
Applications
~Waste compactors
~Log splitters
~Clamp mechanisms
~Crimping machines
~Metal forming machines etc.
Specifications
~European 4 bolt flange
~1:8 tapered shaft
~Common inlet & outlet
~Front pump: 1.6 cc/rev, Rear pump: 6.9 cc/rev, Rotation: Clockwise from shaft view
~Unloading valve opening pressure 35 bar
~From 1.1 to 9.8 cc/rev displacement options
~First stage nominal pressure 230 bar, nominal speed 1500 rpm
Quality of HydroPack Brands