I got one for Christmas and the metal part at the front gets hot
awfully fast just running it at idle without even stressing it. In
less than a minute it's uncomfortably hot, but not so hot that I can't
hold it. Are they all like this or did I get one with a problem? It
doesn't sound unusally noisy, and the parts breakdown shows it having
ball bearing, not sleeves.

RWL

GeoLane at PTD dot NET wrote in message
...

I got one for Christmas and the metal part at the front gets hot
awfully fast just running it at idle without even stressing it. In
less than a minute it's uncomfortably hot, but not so hot that I can't
hold it. Are they all like this or did I get one with a problem? It
doesn't sound unusally noisy, and the parts breakdown shows it having
ball bearing, not sleeves.

RWL


Use an in-line oiler full of trany fluid set pretty high. Messy, but will
last a long time.

On Dec 26, 10:44*pm, GeoLane at PTD dot NET GeoLane at PTD dot NET
wrote:
I got one for Christmas and the metal part at the front gets hot
awfully fast just running it at idle without even stressing it. *In
less than a minute it's uncomfortably hot, but not so hot that I can't
hold it. *Are they all like this or did I get one with a problem? *It
doesn't sound unusally noisy, and the parts breakdown shows it having
ball bearing, not sleeves.

RWL


If this is the electric HF long nose grinder, I noticed the same
issue. I've got a couple of hours use on mine now and it seems to run
a bit cooler. Hasn't seized up yet, so I guess it's okay. I use it
mainly with a cut off wheel for cutting rusty sheet metal, rusty bolts
etc. Seems to have a lot more power than the air die grinders,
although we have a $450 dollar Ingersol Rand air powered unit at work
that probably has a little more zip. For $30 bucks it's hard to beat.

On Fri, 26 Dec 2008 22:44:59 -0500, GeoLane at PTD dot NET GeoLane at
PTD dot NET wrote:


I got one for Christmas and the metal part at the front gets hot
awfully fast just running it at idle without even stressing it. In
less than a minute it's uncomfortably hot, but not so hot that I can't
hold it. Are they all like this or did I get one with a problem? It
doesn't sound unusally noisy, and the parts breakdown shows it having
ball bearing, not sleeves.

RWL


Its running dry. Take it back

Gunner

"[L]iberals are afraid to state what they truly believe in, for to do so would result in even less votes than they currently receive. Their
methodology is to lie about their real agenda in the hopes of regaining power, at which point they will do whatever they damn well please.
The problem is they have concealed and obfuscated for so long that, as a group, they themselves are no longer sure of their goals.
They are a collection of wild-eyed splinter groups, all holding a grab-bag of dreams and wishes. Some want a Socialist, secular-humanist state,
others the repeal of the Second Amendment. Some want same sex/different species marriage, others want voting rights for trees, fish,
coal and bugs. Some want cradle to grave care and complete subservience to the government nanny state,
others want a culture that walks in lockstep and speaks only with intonations of political correctness.
I view the American liberals in much the same way I view the competing factions of Islamic
fundamentalists. The latter hate each other to the core, and only join
forces to attack the US or Israel. The former hate themselves to the core,
and only join forces to attack George Bush and conservatives." --Ron Marr

I got one for Christmas and the metal part at the front gets hot
awfully fast just running it at idle without even stressing it.

RWL


Use an in-line oiler full of trany fluid set pretty high. Messy, but will
last a long time.


Thanks Tom, but this is the electric one.

RWL

On Fri, 26 Dec 2008 22:44:59 -0500, the infamous GeoLane at PTD dot
NET GeoLane at PTD dot NET scrawled the following:


I got one for Christmas and the metal part at the front gets hot
awfully fast just running it at idle without even stressing it. In
less than a minute it's uncomfortably hot, but not so hot that I can't
hold it. Are they all like this or did I get one with a problem? It
doesn't sound unusally noisy, and the parts breakdown shows it having
ball bearing, not sleeves.

Sounds like either a poor design or a problem. Take it back to the
store and ask about it. Most air tools get very cold when in constant
use.

My 1/2" impact got very slightly warm after removing 4 wheels from a
vehicle, but that's heavy use. It's the only air tool I've ever used
which didn't get icy, and I used air tools daily for 15 years when I
was wrenching.

Tawm's suggestion of an inline oiler is a good one, too, but I doubt
that's the problem--if you put a couple drops in before running it.

--
We should take care not to make the intellect our god;
it has, of course, powerful muscles, but no personality.
-- Albert Einstein

GeoLane at PTD dot NET GeoLane at PTD dot NET wrote:

I got one for Christmas and the metal part at the front gets hot
awfully fast just running it at idle without even stressing it. In
less than a minute it's uncomfortably hot, but not so hot that I can't
hold it. Are they all like this or did I get one with a problem? It
doesn't sound unusally noisy, and the parts breakdown shows it having
ball bearing, not sleeves.

If it has speed control start out on lowest speed until it hits 100F or so and stop it to
cool. Repeat. When it stays below 100F on lowest speed, bump up speed and repeat process
until you can make it to full speed.

If all fails it is under warranty

Wes

It's likely the end bearing, although just because a parts illustration
shows a ball bearing assembly, it doesn't mean that's what's in there.
They will probably happily exchange it, which shouldn't cost you anything if
you have a store nearby.

Haven't you ever noticed the obscure or fine print on a warranty form or
owner's manual that reads something like "parts and specifications subject
to change without notice"?

When I disassembled a new Chinese angle grinder (as I always do), I found a
steel bushing shaped like a ball bearing (ID, OD, thickness) in place on the
output (spindle/wheel) shaft.

And no grease, but lots of dirt/grit.

--
WB
..........
metalworking projects
www.kwagmire.com/metal_proj.html


GeoLane at PTD dot NET wrote in message
...

I got one for Christmas and the metal part at the front gets hot
awfully fast just running it at idle without even stressing it. In
less than a minute it's uncomfortably hot, but not so hot that I can't
hold it. Are they all like this or did I get one with a problem? It
doesn't sound unusally noisy, and the parts breakdown shows it having
ball bearing, not sleeves.

RWL

GeoLane at PTD dot NET wrote in message
...

I got one for Christmas and the metal part at the front gets hot
awfully fast just running it at idle without even stressing it.

RWL


Use an in-line oiler full of trany fluid set pretty high. Messy, but will
last a long time.


Thanks Tom, but this is the electric one.

RWL


....and your point being?

On Fri, 26 Dec 2008 22:44:59 -0500, GeoLane at PTD dot NET GeoLane at
PTD dot NET wrote:


I got one for Christmas and the metal part at the front gets hot
awfully fast just running it at idle without even stressing it. In
less than a minute it's uncomfortably hot, but not so hot that I can't
hold it. Are they all like this or did I get one with a problem? It
doesn't sound unusally noisy, and the parts breakdown shows it having
ball bearing, not sleeves.

Uncomfortable is probably not more than 120F or so, which is not
unreasonable for a ball bearing running at high speed. Unless you
think the bearing itself is much hotter than the housing, or gets even
hotter over longer periods of time, and it's running smoothly, I
wouldn't be concerned.

--
Ned Simmons

On Sat, 27 Dec 2008 13:09:30 -0500, the infamous "Buerste"
scrawled the following:

GeoLane at PTD dot NET wrote in message
.. .

I got one for Christmas and the metal part at the front gets hot
awfully fast just running it at idle without even stressing it.

Use an in-line oiler full of trany fluid set pretty high. Messy, but will
last a long time.

Thanks Tom, but this is the electric one.

...and your point being?

'Lecterkal motors take a weeeeeee bit less erl than air motors.

--
We should take care not to make the intellect our god;
it has, of course, powerful muscles, but no personality.
-- Albert Einstein

On Sat, 27 Dec 2008 13:09:30 -0500, "Buerste" wrote:


GeoLane at PTD dot NET wrote in message
.. .

I got one for Christmas and the metal part at the front gets hot
awfully fast just running it at idle without even stressing it.

RWL


Use an in-line oiler full of trany fluid set pretty high. Messy, but will
last a long time.


Thanks Tom, but this is the electric one.

RWL


...and your point being?

Well, thanks for the response, but you're picturing the wrong type of
die grinder. Mine is electric. You're picturing a pneumatic one.


RWL

GeoLane at PTD dot NET wrote: Well, thanks for the response, but you're
picturing the wrong type of
die grinder. Mine is electric. You're picturing a pneumatic one.
^^^^^^^^^^^^^^^^^^^^^^^
Well, go get a pneumatic one, and if the problem persists, we can continue
the discussion.

"Larry Jaques" wrote in message
...
On Sat, 27 Dec 2008 13:09:30 -0500, the infamous "Buerste"
scrawled the following:

GeoLane at PTD dot NET wrote in message
. ..

I got one for Christmas and the metal part at the front gets hot
awfully fast just running it at idle without even stressing it.

Use an in-line oiler full of trany fluid set pretty high. Messy, but
will
last a long time.

Thanks Tom, but this is the electric one.

...and your point being?

'Lecterkal motors take a weeeeeee bit less erl than air motors.

--
We should take care not to make the intellect our god;
it has, of course, powerful muscles, but no personality.
-- Albert Einstein

Apparently not this one!

GeoLane at PTD dot NET wrote in message
...
On Sat, 27 Dec 2008 13:09:30 -0500, "Buerste" wrote:


GeoLane at PTD dot NET wrote in message
. ..

I got one for Christmas and the metal part at the front gets hot
awfully fast just running it at idle without even stressing it.

RWL


Use an in-line oiler full of trany fluid set pretty high. Messy, but
will
last a long time.


Thanks Tom, but this is the electric one.

RWL


...and your point being?

Well, thanks for the response, but you're picturing the wrong type of
die grinder. Mine is electric. You're picturing a pneumatic one.


RWL


You're going to have to adapt an air oiler to your model, it'll be just a
bit more difficult.

I have had a similar Sears die grinder for 25 years. As you said in
another post, yours is electric and so is mine. It, too gets hot to
the touch after a short while, but It hasn't ever bound up on me.
"Hot to the touch" is a relative term, but UL defines "too hot" as
over 137° F. That's the point where most humans can't continue to hold
onto something. If you get one of those Harbor Freight $10 non-contact
thermometers, you can measure it.
Most electrical things in the shop seem to be rated to be able to
run at a "50° C rise". Assuming it's 70° F in the shop, that would mean
the tool could get to: 70 + ((50*1.8)+32)= 70 + 122= 192°F before going
over its spec. for temp rise.
Again, mine does get "hot", but I have used it constantly for up to
1/2 hour at a time without a problem other than that end bearing coming
loose now and then. BTW, my die grinder is rated at 1/4 hp. and is a
single speed machine.

Pete Stanaitis
-----------------

GeoLane at PTD dot NET wrote:
I got one for Christmas and the metal part at the front gets hot
awfully fast just running it at idle without even stressing it. In
less than a minute it's uncomfortably hot, but not so hot that I can't
hold it. Are they all like this or did I get one with a problem? It
doesn't sound unusally noisy, and the parts breakdown shows it having
ball bearing, not sleeves.

RWL

Ned Simmons wrote:
On Fri, 26 Dec 2008 22:44:59 -0500, GeoLane at PTD dot NET GeoLane at
PTD dot NET wrote:


I got one for Christmas and the metal part at the front gets hot
awfully fast just running it at idle without even stressing it. In
less than a minute it's uncomfortably hot, but not so hot that I can't
hold it. Are they all like this or did I get one with a problem? It
doesn't sound unusally noisy, and the parts breakdown shows it having
ball bearing, not sleeves.


Uncomfortable is probably not more than 120F or so, which is not
unreasonable for a ball bearing running at high speed. Unless you
think the bearing itself is much hotter than the housing, or gets even
hotter over longer periods of time, and it's running smoothly, I
wouldn't be concerned.



Too much grease as well as too little grease will cause high speed
bearings to overheat.


John

OldJag wrote:
If this is the electric HF long nose grinder, I noticed the same
issue. I've got a couple of hours use on mine now and it seems to run
a bit cooler. Hasn't seized up yet, so I guess it's okay.
.................................................. .......

On Sat, 27 Dec 2008 10:52:28 -0500, Wes wrote:
If it has speed control start out on lowest speed until it hits 100F or so and stop it to
cool. Repeat. When it stays below 100F on lowest speed, bump up speed and repeat process
until you can make it to full speed.

If all fails it is under warranty

Wes
.................................................. .......

The 90 day warranty gave me the freedom to see if this would self
correct as both of you said, or self destruct, the latter of which
would make a return to Harbor Freight much easier. I decided to run
it for 15-30 minute sessions once a day. I started this before I got
Wes's suggestion to use a speed control, so I've been running it
unloaded at full speed. With this program, the temp has come down to
what I'd consider normal, which was similar to Oldjag's experience
with his. To recap - the first time I ran the die grinder, the end
got too hot to handle within 1 minute of turning it on. By running it
for increasing lengths of time without load, it began to work itself
in and now is at a reasonable temperature. I'll continue to run it
for a few more long periods to be sure it won't have problems, but it
looks like running it will allow it to self correct.

RWL