What is this.....?

[alkv23]

Here we are using is component but i not sure about this part name and also the use of this thing. Hope i get info from u all. Thanks

[windoze killa]

It is a resistor. High power wire wound type. The exposed windings are there for a contact ring. You move the ring along the length to tap off a particular voltage. The rings can be seen in the photos.

[gogo2520]

Hello alkv23
    That looks like a 20watt 1 ohm resistor.
      Not sure about the ohms but you could check that with a ohm meter.
                                                        gogo                           

[alkv23]

It's 12ohm and i just want to know any other component can replace by this coil resistor? Because the resistor always give problem. I want to change to new item.

[ante]

Hi alkv,

What kind of problems do you have with the resistor?

[slackjack]

If you have to change the resistor, replace with an equivalent resistor. The reason for the high wattage (high power dissipation) is to handle the excess current through it. Replacing it with a lower wattage resistor such as 1/2 W or 1 W will only introduce problems.

[steven]

:) ive got some of these high watt wire wound resistors and one looks the same as the first picture and has a thin screw runing through the center to hold the white end caps on

[alkv23]

Yes it have screw to tighten in the middle but i open went i took the picture. Now the problem is the resistor always spoil and the coil will snap. This make our machine stop and after change sure can run. Some time the resistor ok but the m/c problem after change the m/c will run. Headache  :'(

[ante]

Hi alkv,

You could try Kool-Pak resistors instead; just bolt them to the chassis to keep them cool!
http://www.elfa.se/pdf/60/06059984.pdf

The 100W version is very hard to kill!  ;)