Calculating Bearing Temperature with Empirical Cooling Factor

Click For Summary
SUMMARY

The discussion centers on calculating bearing temperature for a rotating shaft, specifically addressing the challenge of determining the cooling factor, which is often an empirical value derived from manufacturer testing. Participants emphasize the necessity of consulting the bearing manufacturer to obtain accurate cooling factors, as these depend on various factors including loading conditions, lubrication, and mounting fits. Additionally, the conversation touches on converting power loss due to friction into temperature changes, highlighting the complexity of this calculation without considering lubrication effects.

PREREQUISITES
  • Understanding of bearing temperature calculations
  • Familiarity with empirical data and manufacturer specifications
  • Knowledge of power loss due to friction in mechanical systems
  • Basic principles of thermodynamics related to temperature changes
NEXT STEPS
  • Contact bearing manufacturers for specific cooling factor data
  • Research empirical methods for calculating bearing temperature
  • Explore the relationship between power loss and temperature increase in bearings
  • Study lubrication effects on bearing temperature and performance
USEFUL FOR

Mechanical engineers, tribologists, and anyone involved in the design and analysis of rotating machinery and bearing systems.

Analysis
Messages
52
Reaction score
0
Dear all
I need to calculate bearing Temperature for the shaft rotating of certain rpm.
Bearing catalog referred and found that cooling factor is missing to arrive final result.
How to find cooling factor?any empherical procedures?standards?sites? If so pl guide me to get the result.

Thanks
Prakash
 
Engineering news on Phys.org
That information is almost always an empirical number derived from manufacturer testing. You would need to contact the bearing manufacturer because it will depend on things like loading, lubrication and mounting fits.
 
FredGarvin said:
That information is almost always an empirical number derived from manufacturer testing. You would need to contact the bearing manufacturer because it will depend on things like loading, lubrication and mounting fits.

Thanks Mr.Fredgarvin

Ok have you any idea to convert the power loss (due to friction)to temperature.
i.e.assume that 10 watts power is loss what will be the corresponding temperature induced (without accounting lubrication factor i.e.cooling factor)

thanks in advance
Prakash
 

Similar threads

  • · Replies 7 ·
Replies
7
Views
3K
Replies
11
Views
10K
  • · Replies 8 ·
Replies
8
Views
4K
  • · Replies 20 ·
Replies
20
Views
3K
  • · Replies 1 ·
Replies
1
Views
4K
  • · Replies 1 ·
Replies
1
Views
4K
  • · Replies 3 ·
Replies
3
Views
3K
  • · Replies 23 ·
Replies
23
Views
37K
  • · Replies 0 ·
Replies
0
Views
3K
  • · Replies 152 ·
6
Replies
152
Views
12K