Motor Rewinding Procedures

••• Jupiterimages/ Images

Alternating current (AC) and direct current (DC) motors employ an insulated, current-carrying coil essential to their operation. The traditional method for motor rewinding involves removing the old coil, winding a new coil and varnishing.


Old coils are removed by heating the stationary part of the motor (stator) in an oven. The stator is kept in the oven at temperature of 650 degrees Fahrenheit for at least 10 hours or until the winding insulation turns to ash.


New coils are traditionally wound by hand by a technician on a coil winding machine. The technician controls the wire tension, layering and number of turns on the coil, although there is also a mechanical counter on the machine.


The newly rewound coil is warmed in an oven, immersed in an epoxy varnish and baked in an oven at a temperature of 300 degrees Fahrenheit for at least four hours. This procedure is known as dip and bake.

Related Articles

Can You Repair a Burned-Out Electric Motor?
Coil Winding Basics
How to Reverse the Poles on a Magnet
How to Build Your Own Paper Foil Capacitor
What Are the Functions of Parts in an Electric Motor?
How to Charge a 12V Battery With a DC Motor
What Is a Ferrite Clamp?
How to Wind a 12-Volt Solenoid Coil
Parts of Induction Motors
The Uses of Different Shaped Magnets
How to Remove Iron Filings From Magnets
How to Build an Electric Motor From Scratch
Types of Mixing Valves for an Oil Furnace Boiler
The Different Parts of an Electromagnet
How Does a Magneto Work?
The Purpose of Coil Springs
How a Magnetic Drive Pump Works
Parts of a Motor
What Is Wrought Steel Pipe?
Factors That Affect the Strength of an Electromagnet