[GreenKeys] Lubricating Ball Bearing Motors

[Bill Lewis]

> So what's the current thinking? In 1941 there was no lithium grease,
> and we use it now instead of oil because Teletype would have specified
> it (or did later?) if it had been available back then?

FWIW, greases using lithium salts were patented in 1942 and
widely used since the '50s.

In 1970, AP called for Lubriplate for the motors.
Assuming they meant the original, that was a calcium grease.

http://www.lubriplate.com/pdf/pds/3_13%20100%20Series.pdf

One thing you want to avoid is mixing dissimilar greases.
Pumping in new grease different from what's already present
can result chemical reactions and the oil separating from the
"soap", or forming wax.

Modern synthetic Mobilith SHC 100 might be a good choice.
McMaster-Carr sells it.

Bill
K3WRL