How hot is too hot for a bearing?

What's the normal operating temperature of bearingsDear All, I have very little knowledge on bearings and would like to may unavoidably result from bearings in hot environments or processes. But with luck there will be a symptom of a (too) rapid temperature increase

Temperature limits | SKF | SKFTemperature limits for self-aligning ball bearings11 bearing myths debunkedPLANT4. Bearings should not be hot to the touch. Normal bearing operating temperatures range from 27 to 66 degrees C, but some applications run higher or lower. Most 

Five Ways to Keep Roller Bearings Cool | Machine DesignFor example, exposure to extremely high loads and speeds, high ambient temperatures, and hot process fluids can be problematic. Here's a look at the five 

Signs of High Bearing Temperatures and Actions to Take toApr 6, 2020 — Know the signs of high temperatures on motor bearings to keep your any bearing needs to be loose enough to make installation possible, too Bearing Temperatures | AMP Maintenance ForumsSep 19, 2013 — Since you talk about mounting, it is a rolling bearing temperature. There are two Inboard housing of TEFC motors tend to run hot. 9/19/138:39 

How hot is hot for a round baler bearing? - MachineryJun 17, 2018 — Most others were about 110-130* However, the big chain drive bearing (not sure of the technical name) was 168*. Is this too hot? I have also What's normal: The role of temperature in bearing applicationsNormal bearing operating temperatures vary, depending on the environment and application. The standard grease in most fan bearings remains effective to an operating temperature of 180°F. If steady-state operating temperatures are higher than 180°F, consider using a grease with a synthetic base oil

How to Manage Hot Bearings in Your PlantBearing Temperature Conditions Most precision installed and lubricated equipment will operate at less than 180 degrees F. A bearing temperature that is less than 180 degrees F is typically considered acceptable (see the chart below)If the Bearing is Hot: (It might be greased or not) - ReliabilitywebIf the Bearing is Hot: (It might be greased or not) if it had not needed grease, another scenario will emerge, "Bearing Failure"; too much grease was introduced