Types of bearing damage for electric motor

11/03/2011 by 3 Comments

From research and root cause analysis for electric motor problems,the higher percentage came from bearing damage around 65%.That mean bearing is very important component in electric motor.

This time i want share about common types of bearing damage for electric motor and how to make a corrective action to avoid same problem happen again.Bearing usually can be used for a long period before their reaching the life span.

Bearing damage usually cause by improper bearing selection,no lubrication,rusty,corrosive,no greasing,wrong handling and due to types of application.Below i describe detail about types of bearing damage and how to prevent it from happen again. read more

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How to replace bearings for electric induction motor?

25/02/2011 by 6 Comments

For electric motor failure causes,the common defected for mechanical part is bearing.Normally 1 unit motor have a 2 pieces of bearing and type of bearing for induction motor is ball bearing full metal cover ( ZZ ).

Root cause for bearings problem usually such as rusty due to condensation process,ball in housing broken,grease was burn out,a ball bearing nest broken and overload or motor shaft connected with load is not alignment properly.

For electrician or maintenance person,this is a routine jobs and it is a compulsory skills for this person who involved in electrical motor field.

This time i want share my little experience how to replaced bearing for electric induction motor.Don’t worry, i explain detail step by step how it done in my video.I hope it can be a guideline  to do it yourself in actual workplaces. Read more

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Induction motor fault finding

03/10/2010 by 11 Comments

Induction motor is common application for domestic and industrial for machinery and production equipment.We can found electric motor in every where and should have a basic knowledge about how to troubleshooting or fault finding when we facing the motor breakdown.

If we not have any experience or not familiar with induction motor,we will face some trouble and if it’s fault finding done by un-experience person,fault finding task is very difficult and maybe can cause a serious damage or injury.It required knowledge and experience to trouble shooting and found the root cause for the problem.

So,this time i share with you`ll a basic fault finding for induction motor.Hope can be a guide for electricians.I listed some usual problem and solution for induction motor.Please refer my fault finding and recognition table. read more

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AC Motor Nameplate

02/10/2010 by 12 Comments

Motor name plate is the introduction or certificate for an electric induction motor.We can know in detail about an electric motor with refer to the nameplate.It same like our identification card or passport.All detail information about that electric motor we can get from this nameplate.

These parameters are then print onto the motor nameplate,it state a basic definition of what motor have received.Manufacturers often include additional information to further define a key motor features.

From motor name plate we can determine many things.All information is very useful when we perform installation,power supply termination,troubleshooting and repairing jobs. read more

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How to replace new bearing for condenser fan motor?

17/09/2010 by 6 Comments

Have you faced any problem with bearing broken,jammed or stuck for your condenser fan motor?Are you know how to change a bearings unit?It look difficult task but if we have required tools,basic knowledge and passion,I’ve think all of you can do this job.

What we need for this job?The important tools is bearing puller set,combination wrench set,WD-40 (anti-rust),pliers,hammer,screwdriver,grease and cotton rack.

In the maintenance job scope,replaced a new bearing for electrical motor is common jobs..This time i want to show you how to replaced a new bearing for Air-condition Out door unit CONDENSER FAN MOTOR. read more

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