Siemens SIMOTICS GP Operating Instructions Manual page 90

GREASE
For Best results, grease should be compounded from a Polyurea
base and a good grade of petroleum oil. It should be of No. 2 consistency
and stabilized against oxidation. Operating temperature range should be
from -15°F to +250°F for class "B" insulation, and to +300°F for class "F" and
"H". Most leading oil companies have special bearing greases that are
satisfactory.
Verify that the new grease to be placed is equivalent and above all
compatible with the original grease of Polyurea base.
Lubrication procedure
The motor can be lubricated while running or stopped. It is advisable to do
so while the motor is stopped, for which the following procedure must be
followed:
1. Take the necessary actions to prevent unexpected starts.
(DISCONNECT THE SYSTEM). Clean the grease fitting and
remove the drain plug from the grease outlet.
2. Remove the old hardened grease from inlets and outlets. Use a stiff
wire or rod.
3. If necessary, remove the nipples and fittings, clean, and reinstall.
4. With a low pressure grease gun, add half the required amount of
new grease.
5. Run the motor for 5 minutes to distribute the grease. Then stop it
and add the rest of the lubricant.
6. Install the drain plug in the grease outlet and wipe away the excess
of grease.
CAUTION:
one that is compatible. Mixing greases of different bases (lithium, clay,
polyurea, etc.) will cause bearing failure or malfunction and should not be
done. All non-compatible grease must be removed from the bearings and
housings when making a grease change. Excess grease in the motor can
cause damage to the bearings; check Table 1.3 of Grease Quantities, for the
necessary grease quantities according to the motor frame size.
Unrestricted
Re-lubricate with the type of grease specified above or
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