What I see in motor name plates in my Lubrication Audits

In one of my lubrication audits , I looked into a motor name plate and noticed some very useful information and even a great notice about compatibility issues of offered grease for that motor by OEM.

Later on I studied NTN " 5K " suffix on sealed deep groove ball bearings and noticed great transparency in NTN Bearing Corporation sealed deep groove ball bearings literature.

6205LLU/5K

https://eshop.ntn-snr.com/en/6205LLU-5K-696251.html

5K in the suffixed means this bearing is filled by (Kyodo Yushi Multemp SRL)

Reference is below:

https://www.ntnamericas.com/en/product-support-and-training/frequently-asked-questions#g6

Let us look into MULTEMP SRL grease data:

This grease base oil is polyolester + dieseter base which would give the grease filled in the bearing very high grease life and automatically the bearing will be having a long service life

The grease has a service life several times longer than wide-temperature-range greases on the market do, enabling lubrication longer at high temperature. Under general conditions, it realizes significantly long cycles of bearing replacement

Life Performance (ASTM D1741, 125℃) test results of the grease is 4000 hours which for a lithium based grease is great.

I will be looking into changing into and mounting sealed deep groove ball bearings of NTN with 5K in electric motors , pumps, etc because such a fantastic grease filling option...