Baldor MN605, Инструкция по установке и эксплуатации

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3-2 MN605
Table 3-3 Service Conditions
Severity of Service Ambient Temperature
Maximum
Atmospheric
Contamination
Type of Bearing
Standard 40° C Clean, Little Corrosion Deep Groove Ball Bearing
Severe 50° C Moderate dirt,
Corrosion
Ball Thrust, Roller
Extreme >50° C * or Class H Insulation Severe dirt, Abrasive
dust, Corrosion
All Bearings
Low Temperature <-30° C ** All Bearings
* Special high temperature grease is recommended (Dow Corning DC44). Note that Dow Corning DC44 grease does not mix with other grease types.
Thoroughly clean bearing & cavity before adding grease.
** Special low temperature grease is recommended (Aeroshell 7). Different brushes may also be required.
Contact your local Baldor district office or an authorized Baldor service center for technical assistance.
Table 3-4 Lubrication Interval Multiplier
Severity of Service Multiplier
Standard 1.0
Severe 0.5
Extreme 0.1
Low Temperature 1.0
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 oz (Grams) *
Volume of grease to be added
in
3
teaspoon
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.