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Electric Motors

All electric motors breakdown at some point. Regular maintenance is vital, especially following these 5 routine tasks:

1. Lubrication2. Bearing Inspection3. Belt Inspections4. Rotor Inspection5. Motor Mounts

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Lubrication

• Proper lubrication is essential• Follow manufacturer specifications• Use high-quality lubricant suggested by manufacturer• Establish a regular interval to examine oil reservoirs• DO NOT over-lubricate

4

Bearing InspectionBearing failure is most common reason for motor breakdown.

Tasks:• Create a consistent

inspection schedule• Check surface

temperature

Causes of Bearing Failure• Misalignment• Improper lubrication• Excessive load• Using wrong bearings• Poor operating

environment

5

Belt Inspections

• Inspect frequently• Check for belt damage• Check belt tension• Check alignment if belt

or couplings aren’t within tolerances

6

Rotor Inspections

• Check gap between stator and rotor

• Check gap on all sides of stator

• If gap changes from one year to next, may indicate bearings are wearing out

7

Motor Mounts

• Inspect annually• Check for warping

in base plates• Check for cracks

in concrete base• Inspect mounting

bolts

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Electric Motors

These tips should only be a part of an overall preventative maintenance program, which may include:

1. Periodic cleaning2. Perform vibration analysis3. Contact resistance testing4. Inspection of moving parts5. Inspection of overload relays

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L&S Electric: Professional, Experienced, Dedicated People

Delivering Quality Solutions and Exceptional Value

To learn more about predictive and preventative maintenance services, visit our website at www.lselectric.com