Bearing Relubrication Intervals FAQ

Questions & Answers

Why are the relubrication intervals that you suggest are different from the lubrication instructions in the motor manual?
You should use our suggested intervals as a guide. If lubrication instructions are shown on the motor, they will supercede these general instructions.
What is considered as standard operating conditions for a motor?
Eight hours per day, normal or light loading, clean 100 degrees Fahrenheit maximum ambient.
What is considered as severe operating conditions for a motor?
Twenty-four hours per day operation or shock loadings,or in dirt or dust al over 100 to 150 degrees Fahrenheit ambient.
What is the relubrication interval for 1800 RPM motors under stardard operating conditions?
Depends on the horsepower.
What is the relubrication interval for 1/4 to 7-1/2 HP 1800 RPM motors under stardard operating conditions?
2 years
What is the relubrication interval for 10 to 40 HP 1800 RPM motors under stardard operating conditions?
1 year
What is the relubrication interval for 50 to 150 HP 1800 RPM motors under stardard operating conditions?
9 months
What is the relubrication interval for 3600 RPM motors under stardard operating conditions?
6 months
What is the relubrication interval for 1/4 to 7-1/2 HP 1800 RPM motors under severe operating conditions?
1 year
What is the relubrication interval for 10 to 40 HP 1800 RPM motors under severe operating conditions?
10.5 months
What is the relubrication interval for 50 to 150 HP 1800 RPM motors under severe operating conditions?
9 months
What is the relubrication interval for 3600 RPM motors under severe operating conditions?
3 months
What is the procedure to re-lubricate motors equipped with purge or drain plugs?
1) Run motor until it is warm 2) Turn power off and stop motor 3) If hazardous location, purge area of hazardous atmosphere or particles 4) Wipe clean all grease fittings (filler and drain) 5) Install Zark fittings in filler holes if required. 6) Remove purge/drain plugs 7) Free drain hole of any hard grease (use piece or wire if necessary) 8) Add grease using a low pressure grease gun (wipe clean gun tip before using)9) Start motor and let run for approximately 30 minutes with drain plug removed. Motors are not to be run without plugs when in the presence of hazardous atmosphere or particle. 10) Stop motor, wipe off any drained grease, and replace drain plugs. 11) Motor is ready for operation.

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