MATTHIESEN Magic Finger Bagger, Owner'S Manual

Page: 51 / 85

Maintenance & Troubleshooting 3-3 MN605
Table 3-5 Bearings Sizes and Types
Frame Size
NEMA (IEC)
Bearing Description
(These are the “Large” bearings (Shaft End) in each frame size)
( )
Bearing OD
D mm
Width
B mm
Weight of
Grease to
add *
Volume of grease
to be added
add *
oz (Grams)
in
3
tea-
spoon
Up to 210 incl. (132) 6307 80 21 0.30 (8.4 ) 0.6 2.0
Over 210 to 280 incl. (180) 6311 120 29 0.61 (17 ) 1.2 3.9
Over 280 to 360 incl. (225) 6313 140 33 0.81 (23 ) 1.5 5.2
Over 360 to 500 incl. (300) NU319 200 45 2.12 (60) 4.1 13.4
* Weight in grams = .005 DB
Lubrication Procedure Be sure that the grease you are adding to the motor is compatible with the grease already
in the motor. Consult your Baldor distributor or an authorized service center if a grease
other than the recommended type is to be used.
Caution: To avoid damage to motor bearings, grease must be kept free of dirt.
For an extremely dirty environment, contact your Baldor distributor or
an authorized Baldor Service Center for additional information.
With Grease Outlet Plug
1. Clean all grease fittings.
2. Remove grease outlet plug.
3. If motor is stopped, add the recommended amount of grease.
If motor is to be greased while running, a slightly greater quantity of grease will
have to be added. Add grease slowly until new grease appears at shaft hole in
the endplate or purge outlet plug.
4. Re-install grease outlet plug.
Without Grease Outlet Plug
1. Disassemble motor.
2. Add recommended amount of grease to bearing and bearing cavity. (Bearing
should be about 1/3 full of grease and outboard bearing cavity should be about
1/2 full of grease.)
Note: Bearing is 1/3 full when only one side of bearing is completely full of grease.
3.
Assemble motor.
Sample Lubrication Determination
Assume - NEMA 286T (IEC 180), 1750 RPM motor driving an exhaust fan in an ambient
temperature of 43
°
C and the atmosphere is moderately corrosive.
1. Table 3-2 list 9500 hours for standard conditions.
2. Table 3-3 classifies severity of service as “Severe”.
3. Table 3-4 lists a multiplier value of 0.5 for Severe conditions.
4. Table 3-5 shows that 1.2 in
3
or 3.9 teaspoon of grease is to be added.
Note: Smaller bearings in size category may require reduced amounts of grease.
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