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LUBRICATION INSTRUCTIONS
OPERATION IN PRESENCE OF DUST, WATER
OR CORROSION VAPORS
This bearing is factory lubricated with No. 2 consistency
lithium complex base grease which is suitable for most
applications. However, extra protection is necessary if
bearing is subjected to excessive moisture, dust, or
corrosive vapor. In these cases, bearing should contain as
much grease as speed will permit (a full bearing with
consequent slight leakage through the seal is the best
protection against contaminant entry).
In extremely dirty environments, the bearing should be
purged daily to flush out contaminants. For added protection,
it is advisable to shroud the bearing from falling material.
HIGH SPEED OPERATION
At higher operation speeds, too much grease may cause
overheating. In these cases, the amount of lubrication can
only be determined by experience. If excess grease causes
overheating, remove grease fittings and run for ten minutes.
This will allow excess grease to escape. Then wipe off
excess grease and replace grease fittings.
In higher speed applications, a small amount of grease at
frequent intervals is preferable to a large amount at
infrequent intervals. However, the proper volume and
interval of lubrication can best be determined by experience.
AVERAGE OPERATIONS
The following table is a general guide for normal operating
conditions. However, some situations may require a change
in lubricating periods as dictated by experience. If the
bearing is exposed to unusual operating conditions, consult
a reputable grease manufacturer.
Lubrication Guide
Read Preceding Paragraphs Before Establishing Lubrication Schedule
Suggested Lubrication Period in Weeks
Hours
run
per day
1 to
250
rpm
251 to
500
rpm
501 to
750
rpm
751 to
1000
rpm
1001 to
1500
rpm
1501 to
2000
rpm
2001 to
2500
rpm
2501 to
3000
rpm
8
16
24
12
12
10
12
7
5
10
5
3
7
4
2
5
2
1
4
2
1
3
2
1
2
1
1
OPERATING TEMPERATURE
Abnormal bearing temperatures may indicate insufficient
lubrication. If the housing is too hot to touch for more than a
few seconds, check the temperature by applying a thermom-
eter at the top of the pillow block with the thermometer tip
surrounded by putty.
Because the thermometer reading will be approximately
10°F lower than the actual bearing temperature, add ten
degrees to the reading and compare to the temperature
rating of your grease. If the bearing temperature reading is
consistent and operating within the recommended limits of
your grease, the bearing is operating satisfactorily.
The recommended maximum operating temperature for S-
2000 Spherical Roller Bearings is 200 °F.
STORAGE OR SPECIAL SHUT DOWN
If equipment will be idle for some time, before shutting down,
add grease to the bearing until grease purges from the
seals. This will ensure protection of the bearing, particularly
when exposed to severe environmental conditions. After
storage or idle period, add fresh grease to the bearing before
starting.
SET SCREW TORQUE TABLE
Shaft Size
Socket
Set Screw
Size
Tightening
Torque
13/8 - 13/4 inches
11
15/16 - 27/16 inches
12
11/16 - 37/16 inches
13
15/16 - 415/16 inches
5/16 inches
3/8 inches
1/2 inches
5/8 inches
165 Inch Pounds
290 Inch Pounds
620 Inch Pounds
1325 Inch Pounds
RECOMMENDED SHAFT TOLERANCE TABLE
Low to Normal Equivalent
Normal Load and Catalog
Shaft Size Speed*
Up to 11/2 inches +.000 inches –.0005 inches
Over 11/2 to 21/2 inches +.000 inches –.001 inches
Over 21/2 to 4 inches +.000 inches –.001 inches
Over 4 to 5 inches +.000 inches –.0015 inches
On severe applications and where dynamic balance and minimum
runout are important, a snug to light press fit may be required to
obtain optimum bearing performance. Consult factory.
*Normal equivalent load .08C to .18C.