What Is This Plastic Slidey Thing On My Saw's Power Cord?

 
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Old 12-19-2010, 11:22 AM   #1
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What Is This Plastic Slidey Thing On My Saw's Power Cord?


So I recently bought a new Hitachi Sliding Miter Saw, and the power cord has this cylindrical plastic thing attached to it. It freely slides, and I'm assuming it's something that stabilizes or filters the current using magnets. That said, I have no clue and I don't even know what the thing is called, hence Google isn't yielding any clues. Thought I'd ask a sparky if they knew what this thing was called so I could read more about it?

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Old 12-19-2010, 11:26 AM   #2
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Re: What Is This Plastic Slidey Thing On My Saw's Power Cord?


I'm pretty sure its called an em-tag. http://www.bgintr.com/html/e_products.htm

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Old 12-19-2010, 11:29 AM   #3
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Re: What Is This Plastic Slidey Thing On My Saw's Power Cord?


pizalm is right it is more than likely the anti-theft device called em-tag. They come off pretty easily.
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Old 12-19-2010, 11:31 AM   #4
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Re: What Is This Plastic Slidey Thing On My Saw's Power Cord?


Interesting stuff. Thanks! I thought it was something beneficial to the tool
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Old 12-19-2010, 11:37 AM   #5
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Re: What Is This Plastic Slidey Thing On My Saw's Power Cord?


I used to have some tools many year ago that hand the ferrite rings installed. The new stuff I have that has them used the split type. Not sure what exactly they do but I have removed them before without any issues.
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Old 12-19-2010, 11:45 AM   #6
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Re: What Is This Plastic Slidey Thing On My Saw's Power Cord?


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Originally Posted by BCConstruction View Post
Not sure what exactly they do but I have removed them before without any issues.
They are there to cut down on RF noise generated by the tool being broadcast and interfering with nearby electronic devices.
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Old 12-19-2010, 11:51 AM   #7
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Re: What Is This Plastic Slidey Thing On My Saw's Power Cord?


Quote:
They are there to cut down on RF noise generated by the tool being broadcast and interfering with nearby electronic devices.
That's pretty funny stuff right there.

Take that little sucker apart and inside you will find one of those little security strips that must be decoded at the checkout. That's all it is. Same thing you find in most all packaging these days.

RF noise suppressor - I'm still chuckling.
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Old 12-19-2010, 11:52 AM   #8
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Re: What Is This Plastic Slidey Thing On My Saw's Power Cord?


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RF noise suppressor - I'm still chuckling.
Chuckle away. I was referring to the ferrite rings, not the OP.
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Old 12-19-2010, 12:03 PM   #9
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Re: What Is This Plastic Slidey Thing On My Saw's Power Cord?


AH! Had me goin' there for a minute.
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Old 12-19-2010, 12:44 PM   #10
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Re: What Is This Plastic Slidey Thing On My Saw's Power Cord?


They do look very alike. I have them emtag things on some power tools. Not sure what ones. But the ferrite coils do look very similar. These are the types I remove. The difference between the 2 is the emtag things are always tight but the ferrite coils slide.


I ain't been able to get the emtag things of though. Worried to do damage to cable.
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Old 12-19-2010, 01:14 PM   #11
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Re: What Is This Plastic Slidey Thing On My Saw's Power Cord?


Quote:
Originally Posted by bhock View Post
pizalm is right it is more than likely the anti-theft device called em-tag. They come off pretty easily.
That's exactly what they are.
I like to go around job sites and ask the guys if they know what they are. Everyone who leaves them on has no idea what they are, but leave them there anyway.
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Old 12-19-2010, 01:16 PM   #12
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Re: What Is This Plastic Slidey Thing On My Saw's Power Cord?


i have em on a few tools, not just hitachi, at first i thought they were to protect the chord from kinking right at the plug but realized they slide... then i figured they put em there to confuse the likes of us
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Old 12-19-2010, 01:35 PM   #13
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Re: What Is This Plastic Slidey Thing On My Saw's Power Cord?


All these rfid tags are a joke. Still surprised companies put them on products when you can make or buy a Zapper for a few $ that will deactivate any passive system. People around here have been caught using them in lowes. They will wait till its busy and load up their cart with tools. Zap the rfid tags and walk out the door. Just like locks on your door and drm they keep honest people honest.
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Old 12-19-2010, 01:37 PM   #14
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Re: What Is This Plastic Slidey Thing On My Saw's Power Cord?


As usual, Tin was right; they are snap on "RF cord chokes" or "ferrite cord chokes". In our other business, we work with a guy who fabricares electronic sculptures, and he has pointed them out to me when we're doing installations.

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Old 12-19-2010, 06:15 PM   #15
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Re: What Is This Plastic Slidey Thing On My Saw's Power Cord?


I wondered about that!
Now I know!
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Old 12-19-2010, 07:07 PM   #16
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Re: What Is This Plastic Slidey Thing On My Saw's Power Cord?


Literally, hit the thing with a hammer and it will come off instantly.

That's what I do.
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Old 12-19-2010, 07:32 PM   #17
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Re: What Is This Plastic Slidey Thing On My Saw's Power Cord?


I was going to say ferrite core so it doesn't screw with your radio reception when you use the saw.
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Old 12-19-2010, 08:02 PM   #18
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Re: What Is This Plastic Slidey Thing On My Saw's Power Cord?


ah...yea...me too

actually i thought they were cord dust removers
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Old 12-19-2010, 08:34 PM   #19
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Re: What Is This Plastic Slidey Thing On My Saw's Power Cord?


I thought it was for when you get a nick in the cord you slide it over the nick so osha doesn't see it.
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Old 12-19-2010, 09:02 PM   #20
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Re: What Is This Plastic Slidey Thing On My Saw's Power Cord?


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I thought it was for when you get a nick in the cord you slide it over the nick so osha doesn't see it.
Not needed for me then. I just don't pull permits and roll up in a Florist's van, so that OSHA doesn't know there's a job going on

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