Hi-Low (HL) Series Pump
Double Stage Pumps with Unloading Valves, 1st Stage- 1,4 – 4,1, 2nd Stage – 4,1 – 13,8 cm³/rev Displacement.
The 1HL, 1PHL, and 2HL High/Low hydraulic gear pumps are special double-stage pumps with special integrated valves.
The first stage, low displacement, high pressure. The second stage, high displacement, low pressure. RPM pump range 1,000 to 3,500rpm.
The Hi-Low (HL) pumps are ideal for applications requiring a quick approach and/or return of the actuator at low loads (defined by the sum of the flows of the first and second stage) and slow motion of the actuator at high loads (defined by the first stage). Compared to traditional pumps, HL ones require a less powerful motor. HL pumps are available for groups 1, 1P, and 2. All displacement combinations for the two stages, flanges and shafts are available for a very flexible configuration of the pump.
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Specifications
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1PHL Group
First Stage Smaller Displacement High Pressure 1.4 cm³/rev to 4.1 cm³/rev P1 = up to 250 bar Second Stage Bigger Displacement Low Pressure 4.1 cm³/rev to 13.8 cm³/rev Pressure set by unloading valve Unloading Valve 30 bar Special settings on request Pump RPM Range 1000 - 3500 rpm - Ports Common inlet. Common outlet Side ports code FG, FA 1HL Group
First Stage Smaller Displacement High Pressure 1.4 cm³/rev to 4.1 cm³/rev P1 = up to 250 bar Second Stage Bigger Displacement Low Pressure 4.1 cm³/rev to 13.8 cm³/rev Pressure set by unloading valve Unloading Valve 30 bar Special settings on request Pump RPM Range 1000 - 3500 rpm - Ports Common inlets. Common outlet Side ports code D 2HL Group
First Stage Smaller Displacement High Pressure 4.5 cm³/rev to 8.3cm³/rev P1 = up to 250 bar Second Stage Bigger Displacement Low Pressure 9.6 cm³/rev to 35.2 cm³/rev Pressure set by unloading valve Unloading Valve 50 bar Special settings on request Pump RPM Range 1000 - 3500 rpm - Ports Common inlet. Common outlet Side ports code FG Features and Benefits
Advantage of requiring lower power of the motor - Special integrated valves specially designed for trash compactors, log splitters, clamping mechanisms, crimping machine, metal forming machine, ect. - Markets
Industrial - Applications
Presses - Log Splitters - Compactors - Waste Compactors - Clamp Machanisms - Crimping Machines - Metal Forming Machines - Ideal for applications requiring a quick approach and/or return of the actuator at low loads ( Defined by the sum of the flows of the first and second stage) and slow motion of the actuator at high loads (defined by the first stage) - -
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