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HY20L Series
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Contents
General data, technical features, working conditions
Page 2
Filtration, formulae, flow measurement & noise
Page 3
Model coding
Page 4
Installation data, flange port types
Page 5
Threaded port types, drive shafts
Page 6
Mounting flanges
Page 7
Rear covers
Page 8
Rear cover valves
Page 9/10
Multiple pumps
Page 11
HY20L gear pumps are low noise units with phased gears.
Available as Group 2 giving displacements from 5cm³/rev to 22.5cm³/rev (from 0.30 cu.in/rev to 1.37 cu.in/rev).
All pumps are available also as multiple units.
With all sizes of pumps there are options of shafts, flanges and ports as per European, German and SAE standards.
- High volumetric efficiency by innovative design and accurate control of machining tolerances
- Axial compensation is achieved by the use floating bushes that allow high volumetric efficiency throughout
the pressure range
- Plain bearings ensure high pressure capability
- 12 teeth integral gear and shaft
- Extruded aluminium body
- High strength end cover and flange
- Double shaft seals
- Nitrile seals as standard and viton seals in high temperature applications
All pumps are tested after assembly and run in to ensure the high standard.
GENERAL
TECHNICAL FEATURES
WORKING CONDITIONS
- Inlet pressure pump .................................................................................0.7 to 2.5 bar (abs)
10 to 35 psi (abs)
- Minimum viscosity ...................................................................................12mm³/sec
- Max starting viscosity ..............................................................................800mm²/sec
- Viscosity from ...........................................................................................17 - 65mm²/sec
- Oil temperature ........................................................................................-15 to +85˚C
- Hydraulic fluid ..........................................................................................mineral oil
For any other information not listed please contact your Hydreco representative.