web june 2018 - 750x525
web june 2018 - 750x525
web june 2018 - 750x525
web june 2018 - 750x525

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

With a wide range of reduction ratios
Maximum power rating
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.

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Document Type

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.

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.

Emergency 24h Contact


In case of after hours service emergency, please contact the number above.

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