Gear Tooth temperature rise from no-load to full-load 2

[SMKRe]

How much temperature of gear/pinion tooth will be increased from no-load (2 to 5% of full-load) to full-load in high speed gearbox? oils used are ISO mineral oil. How to calculate the rise in temperature from no-load to full-load?
How much gearbox power loss will increase from no-load to full-load condition?

 

[mfgenggear]

This may help

https://members.agma.org/MyAGMA/MyA....aspx?iProductCode=14179_1&Category=STANDARDS

 

[3DDave]

The way to calculate this is to take the temperature at the start of the test and subtract that from the temperature towards the end of the test. After you have done this for about 500 different gearboxes of similar design and power capacity you will have a guide to use for future gearbox development.

 

[Tmoose]

High speed = ??

- Oil bath lubrication?
- Pressurized oil with nozzles etc pointing at the gear mesh ?
- Minimal quantity lubrication ( supplanted oil mist in modern times )

 

[SMKRe]

The high speeds gears are rotating at a peripheral velocity of 90 m/s, the lubrication type is pressure oil with nozzles pointing at the outmesh of gears. How much power loss will increase from no-load to full load? and how much rise in temperature of gear tooth from no-load to full-load?

 

[Tmoose]

For bearings, not gears, but perhaps helpful.

https://www.schaeffler.com/remoteme...chaeffler_2/tpi/downloads_8/tpi_176_de_en.pdf

There may have been an equivalent AGMA Standard mentioned by others.

I think appropriate answers to "how much, how much, how to calculate" would also be one sentence, and thus not really very useful if a quantitative solution is what you seek.

 

[Mechtex9879]

Dear SMKRe

How to calculate the rise in temperature from no-load to full-load?

Ans -

To calculate the rise in temperature from no-load to full-load conditions:

Determine power loss at both conditions.
Calculate heat generated using power loss.
Use specific heat capacity of components to estimate temperature rise.
Consider heat dissipation for accurate results.
Repeat calculations for different load conditions if necessary.

How much gearbox power loss will increase from no-load to full-load condition?

Ans - It is not possible to calculate increase in gearbox power loss with your data. The increase in gearbox power loss from no-load to full-load condition typically depends on factors like friction, gear meshing losses, and bearing friction. Kindly use data of above factors and calculate the increase in gearbox power loss.

Thank You