Cooling Tower Applications Brochure
Brochure
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Hansen P4 Single Stage
Optimal balance between Mechanical, Thermal and Bearing ratings
The Hansen P4 single stage gearbox is available in a parallel horizontal configuration. Technically balanced between optimum thermal and mechanical performance there are mainly 2 series available:
- The standard single stage series with a monoblock housing are available in 5 sizes with a power rating up to 4MW.
- The heavy duty single stage series has a housing with horizontal split plane and a dedicated pressure lubrication system with a power rating up to 12MW (available in 4 sizes).
| Number of Sizes | 9 |
| Housing type - standard | Monoblock |
| Housing type - heavy duty | Split plane |
| Gears | Helical gears (designed and rated in accordance with AGMA) |
| Reduction Ratios | 1.2:1 to 5.6:1 (pre-designed ratio available within 1% of requested ratio) |
| Power Rating | Up to 12 MW |
| Nominal output torque | from 15 to 185 kNm |
| Input speed | up to 1800 rpm |
| Lubrication - standard | Splash Lubrication |
| Lubrication - heavy duty | Dedicated pressure lubrication system |
Key Product Facts
1
stage
With a wide range of reduction ratios
12
MW
Maximum power rating
9
sizes
Parallel gearboxes
Advantages of Hansen P4 single stage series
Powerfull Gear Geometry
For maximum load capacity, minimum losses & lower noise levels
Specific Housing
Single stage application-oriented
Large Inspection Cover
Above the oil level for easy and quick inspection without oil drainage
Maintenance-Free Sealing
Oil-lock, designed to keep the oil in and dirt out
Reliable Lubrication
Dedicated pressure lubrication system for heavy-duty
Instruments & Accessories
Application oriented cooling devices, condition monitoring, etc.
Filters
What's new about the P4 Single Stage shaft height and why is this important?
The P4 Single Stage gear units have been designed with an enlarged housing and an increased shaft height. The vast cooling surface raises the thermal rating and the larger oil sump assures a longer oil life. In combination with the service cover, a cooling coil can be fitted, without having to disassemble the complete gear unit.
The increased shaft height also results in the input shaft being better positioned versus the shaft height of the electric motor.
As such, motor and gear unit will be equally affected by thermal expansion and the static alignment is not disturbed during operation.
What type of lubrication method does the P4 use?
Hansen P4 units use one of the following systems:
- Splash Lubrication (standard with horizontal shaft gear units for speeds between 750 and 1800RPM at the high speed shaft. Gears and output shaft bearings are lubricated by immersion in the oil bath. Oil splash from gears fill the oil pockets in the housing, assuring gravity circulation lubrication of the bearings via channels in the housing and covers.)
- Force Feed Lubrication (all rotating elements above oil bath level are lubricated by a gear pump forcing the oil through pressure lines. Forced feed lubrication is available as circulation lubrication or pressure lubrication.
