JJPellin
Mechanical
- Oct 29, 2002
- 2,195
I attempted to do a search for my question and was not able to find any relevant threads. I apologize if I missed any.
We are in the process of designing a replacement cooling tower. It is expected to have 6 fans, 18 feet in diameter, driven by 150 HP motors. The cooling tower manufacturer is proposing that we use single reduction gearboxes. All of our existing cooling towers (6 towers with 50 fans) use double reduction gearboxes. The project manager is asking for justification to spend more to get double reduction gearboxes. For clarity, we are talking about right angle gearboxes that have input speeds of 1800 rpm and output speeds in the range of 150 to 190 rpm.
Should we expect to pay a penalty in reliability or service life by using single reduction gearboxes rather than double reduction?
Johnny Pellin
We are in the process of designing a replacement cooling tower. It is expected to have 6 fans, 18 feet in diameter, driven by 150 HP motors. The cooling tower manufacturer is proposing that we use single reduction gearboxes. All of our existing cooling towers (6 towers with 50 fans) use double reduction gearboxes. The project manager is asking for justification to spend more to get double reduction gearboxes. For clarity, we are talking about right angle gearboxes that have input speeds of 1800 rpm and output speeds in the range of 150 to 190 rpm.
Should we expect to pay a penalty in reliability or service life by using single reduction gearboxes rather than double reduction?
Johnny Pellin