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 12MW.
- 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 | Up to 1.6M lb-in (185 kNm) |
| Input speed | up to 1800 rpm |
| Lubrication - standard | Splash Lubrication |
| Lubrication - heavy duty | Dedicated pressure lubrication system |
Key Product Facts
Advantages of Hansen P4 single stage series
Documentation
FAQ
Do you have questions about the Hansen P4 Single Stage Unit? Below are some of our most commonly asked questions, or you can view our Support area under Knowledge for more frequently asked questions and answers.
I don’t like the turnbuckle torque arms and sometimes have reversing applications they don’t work well for, do you have another option?
Yes, we have 6 different torque arm options to make your installation easy.
What if I need to change the backstop rotation?
No problem, your Sumitomo rep can assist with that, we can instruct you how, or you can send it to us to do.
Can I adjust the speed with a direct drive like I can with a belt drive?
Not by changing a sheave size since that component is eliminated, but there are things to consider…
- How often are you really changing the speed?
- The flexibility of changing a sheave size also puts your system at risk. Are you overspeeding beyond the reducer's capabilities? Are you slowing down too much and causing the backstop spragues to drag and wear?
If you are utilizing a VFD, that can control your speed.
- If you find out you truly need to change your speed, our BBB is the only direct drive on the market that has a Cyclo cartridge that could be changed to change your overall speed eliminating the need for a whole new reducer. Work with your Sumitomo rep to consider this.
I don’t have a very long shaft, can I still replace a belt drive with a direct drive?
Yes, if our standard Taper Grip Bushing requires more shaft than you have, we have a new Taper Grip Bushing option that needs an average of ½ the shaft length. When we size up the reducer you need, we can tell you how much shaft length you need for both options.
What should be some features or upgrades I should consider for the Aggregate, Sand and Cement industries?
Taconite Seals, Severe Duty or Desiccant Breather
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.
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.
How often do I change the oil?
The first oil change should be carried out preferably after 100 hours and not more than 800 hours of operation. The removed oil may be used again after filtering. Filter the oil volume at least 10 times using a 10mm filter or smaller. Subsequently the oil should be renewed after 4000 to 8000 hours or maximum of 18 months of operation depending on working conditions. Please refer to service manual for detailed oil change instructions.
What type of lubrication should be used?
Mineral oils containing EP additives, which increase oil film load capacity should be used. Refer to the P4 service manual for recommended oil types.
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