TOSHIBA INTERNATIONAL CORPORATION
Industrial Division / Houston Motor Plant
Motor Operation Procedure
REFERENCE USE ONLY WHEN ISSUED BY MOTOR MKTG.
Motor Lubrication
Dist: Mktg.
QC
1. SCOPE
To give recommended guidelines for electric motor relubrication.
2. START UP
Toshiba motors are properly greased at the time of manufacture. It is recommended that
if a motor has been stored for a period of six months or more, it should be lubricated prior
to starting (See Fig. 1) using a standard hand held grease gun.
Fig. 1 FRAME SIZE QUANTITY of PUMPS
It should be noted that grease leakage around the shaft hole could indicated over-
packing. Excess grease should be purged out by operating the motor temporarily with
the relief open.
Lubrication of electric motors should be done as a part of a planned maintenance
program.
Before greasing, be sure fittings are clean and free from dirt. Always relubricate using
grease that is fresh and free from contamination.
Toshiba motors may be equipped with an automatic grease relief fitting, grease plug or
grease cover plate for the outlet.
It should be noted that it may be necessary to remove an automatic type fitting due to
hardening of grease. Motors utilizing a grease plate may require the scraping out of old
grease a minimum of once every two years.
3. STANDARD SERVICE
1. Select the proper service condition from Fig. 2.
2. Select the frequency and volume from Fig. 3.
3. Before greasing be sure fittings are clean and free from dirt.
143 ~ 256
284 ~ 405
444 and Larger
INDEX MDS-O-0001
SHEET NO. 1 of 3
ISSUED 01/24/96
SUPERSEDES NEW
REVISION 0
WRITTEN BY I. MARQUEZ
APPROVED BY
2 to 3 strokes
4 to 5 strokes
6 to 10 strokes
J. Bugbee
TOSHIBA INTERNATIONAL CORPORATION
INDEX MDS-O-0001
Industrial Division / Houston Motor Plant
SHEET NO. 2 of 3
Motor Operation Procedure
3. STANDARD SERVICE (-cont.)
5. Remove relief plug or plate and using a low pressure hand held grease gun, pump the required
amount of grease.
6. For Frames 143T to 365T allow motor to run for 20 to 30 minutes and for Frames 405T and
larger allow motor to run for 30 to 60 minutes before replacing hardware.
7. Grease may not relieve from drain. Use volumes recommended to avoid overgreasing.
Fig. 2 SERVICE CONDITIONS
Standard Duty Eight hours per day;
Light to normal loading;
Clean condition, free from dust.
Severe Duty 24 hours per day;
Light to normal shock loading, vibration;
Exposure to dirt or dusty conditions.
Very Severe Duty 24 hours per day;
High ambient;
Normal to high shock loading, vibration;
Dusty conditions;
Confined mounting conditions
4. RECOMMENDED GREASES:
Confirm if the motor nameplate has specified the grease used.
Standard, Severe Duty and 841 motors greased at the factory will use:
Grease Name: Chevron SRI
Manufactured By: Chevron U.S.A., Inc.
Operating Ambient Temp.: -30°C to 50°C
5. RECOMMENDED GREASES for STANDARD APPLICATIONS
Use the following greases listed for the given temperature range, unless otherwise shown by the motors
grease nameplate:
Chevron SRI
Exxon Unirex #2
Exxon Polyrex
Shell Dolium R
Polystar RB 2
Operating Ambient Temp. -30°C to 50°C
Chevron U.S.A., Inc.
Exxon Corp.
Exxon Corp.
Shell Oil Co.
Texaco
ISSUED 01/24/96
SUPERSEDES NEW
TOSHIBA INTERNATIONAL CORPORATION
INDEX MDS-O-0001
Industrial Division / Houston Motor Plant
SHEET NO. 3 of 3
Motor Operation Procedure
Fig. 3
SYNC. RPM
3600
Bearing Size
3600
Bearing Size
3600
Bearing Size
NOTES:
1. When relubricating roller bearings divide the monthly service time by two.
2. See Fig. 2 for definitions of Service Conditions.
3. Gram quantity when using a typical low pressure hand grease gun equals
(4 pumps = 5 grams)
6. RECOMMENDED GREASES FOR SPECIAL APPLICATIONS
The following greases are recommended for special applicaitons only and should be used only for motors
specifically built for such conditions.
Beacon 325 Exxon Corp.
DOW Corning 44
Exxon Unirex S2
WARNING: In general it is not recommend to mix greases of different brands. The mixing of different types of thickeners may destroy the
composition and physical properties of the grease. In the event that a different grease is required by the end user, the following steps can
be taken. Using the instructions for lubrication, open grease outlet and purge the system as much as possible of the old or unwanted
grease. Repeat this same operation after 1 week of service. Consult TOSHIBA/HOUSTON Engineering for further recommendations on
grease compatibility.
TYPE OF SERVICE
RANGE
1800 ~ 900
6205/6206
6207/6208/6305
6308/6309
1800 ~ 900
6310/6312
1800 ~ 900
6313/NU317
NU318/NU320
6317/6318
6320/6322/6324
NU322/NU324
NU328/NU2228
FRAME SIZE STANDARD
143T-256T
143T-256T
6306
284T-365T
284T-365T
6211
6309
6314
404T-447T
404T-447T
6216
DUTY
8 Mos.
30 Mos.
Periodic Grease Amount
8 Mos.
24 Mos.
Periodic Grease Amount
8 Mos.
18 Mos.
Periodic Grease Amount
SEVERE
DUTY
4 Mos.
12 Mos.
3 Grams
5 Grams
10 Grams
20 Grams
4 Mos.
12 Mos.
10 Grams
20 Grams
30 Grams
50 Grams
4 Mos.
8 Mos.
20 Grams
30 Grams
50 Grams
80 Grams
80 Grams
80 Grams
100 Grams
Minimum Ambient Temp. -60°C
Maximum Ambient Temp. 90°C
DOW Corning Corp.
Exxon Corp.
ISSUED 01/24/96
SUPERSEDES NEW
VERY SEVERE
DUTY
1 Mo.
4 Mos.
1 Mo.
4 Mos.
1 Mo.
3 Mos.
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