4 1/2" Grinder grease?
- Thread starter johninct
- Start date
sberry
Banned
You can often just smear the grease that is in there now around some, it will be spun out and collected in the case. I have added a few drops of gear lube too. A littlevwheel bearing grease might work too but out of the dozen or so I have had never had the gear fail, especially the old DeWalt and old B&D 2750. Mind the brushes on them, it ruins the armature. Not worth fixing then.
They are actually my favorite grinder but didn't stand up to heavy use, overheated a couple. I don't like slide aswitch as good as that paddle but I get used to them. I use their cheaper cousin now which lasts as long or longer and so does the cord.
They are actually my favorite grinder but didn't stand up to heavy use, overheated a couple. I don't like slide aswitch as good as that paddle but I get used to them. I use their cheaper cousin now which lasts as long or longer and so does the cord.
redwrench60
Well-known member
NLGI “00” grease. Don’t pack it full. Just a teaspoon or so. Same stuff used in Snapper lawn mower gearcases.
kelpaso1
MEMBER EMERITUS
I've just used CV boot moly grease. Fill the case half full. No problems.
I think ep moly grease is fine. I am working on a 7" grinder that needs a gear, and it sure looks and feels like moly ep grease to me
proper stuff is $120 for 1lb pack from dewalt
proper stuff is $120 for 1lb pack from dewalt
mbshop
Well-known member
I use moly grease. I may switch to synth grease as the moly can make a mess. Every new tool I get I take it apart and grease it. Big differance.
sberry
Banned
The manufacturers don't know what they are doing?
rlitman
Well-known member
I'd suggest quite the opposite. 00 is what you'd find in a hypoid or worm gearbox. Angle grinders are meant to run hot, and often come with a thick waxy grease like NLGI 3 that only liquefies when the box warms up a bit. 00 in an angle grinder without seals made for it is just going to ooze out in places where you don't want it.
absolutely .
I'm sure for production use they have formulated it to be really ideal, but when something is used occasionally like many users here, it probably doesn't make it cost effective to buy the $120 tub of grease . also they likey have a huge mark up on that grease.
+1 to that. Actually I forget which manufacturer but one of them had CV joint grease as the recommended grease on their parts list.
S
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sberry
Banned
I was referring to taking new tools apart and greasing them. Most of the time the reason i buy something new is i dont want to work on it and want it to be factory assembled.
BD1
Well-known member
I have a Metabo that's 30 years old and never touched it. Some Dewalts are 20 years old and did nothing to them either.
sberry
Banned
I had some machine apart, should have noted that there was a big sticker on the cover that shows how this goes together. Not sure how I missed it,,, big thing, just was so absorbed I didn't pay attn when it was time. It must be a regular problem that they add this to the machine.
They I ruin a seal redoing it, then my helper says,,, it worked fine before as the last guy made the same mistake. But 4 fukkin tries, the helper finally put it together in the middle of the night when I wasn't looking.
Not that this applies to anyone in this thread,,,,, but I often hear,,, well that's the way it came apart,,,, well,,, maybe that's why we working on it again. Had a bud did it a while back, a good dealer mechanic would have known. Found another thing on a truck the other day, some general shop didn't get the air filtration correct.
Have seen this where stuff is to be dealer assembled, never know if it was the guys first day. I really try to run something as long as practical from factory. I have seen this,,,, but,,,, its brand new,,,, but they had it apart gonna fix it better.
They I ruin a seal redoing it, then my helper says,,, it worked fine before as the last guy made the same mistake. But 4 fukkin tries, the helper finally put it together in the middle of the night when I wasn't looking.
Not that this applies to anyone in this thread,,,,, but I often hear,,, well that's the way it came apart,,,, well,,, maybe that's why we working on it again. Had a bud did it a while back, a good dealer mechanic would have known. Found another thing on a truck the other day, some general shop didn't get the air filtration correct.
Have seen this where stuff is to be dealer assembled, never know if it was the guys first day. I really try to run something as long as practical from factory. I have seen this,,,, but,,,, its brand new,,,, but they had it apart gonna fix it better.
sberry
Banned
I have done it and try to remember it if I can help it, that's why I even mentioned.
Another peeve is factory maintenance guys. Go to work on it,,, wiring all fukked up with a bunch of new crimp connectors. I ask why,,, well,,,, I just don't understand,,, followed by,,, It cant work that way. It worked for 25 years till yesterday.
Then there is the politics of it. I fixed a machine, designed a bunch of parts, had it all working and the buthole says,,, we will have the electrical contractor install the permanent wire,,, ok, I come in, all wired different,,,again,,,it cant work like that. Well did it work this morning,,,, yes,,,, but it cant work like that, never did work right.
Another peeve is factory maintenance guys. Go to work on it,,, wiring all fukked up with a bunch of new crimp connectors. I ask why,,, well,,,, I just don't understand,,, followed by,,, It cant work that way. It worked for 25 years till yesterday.
Then there is the politics of it. I fixed a machine, designed a bunch of parts, had it all working and the buthole says,,, we will have the electrical contractor install the permanent wire,,, ok, I come in, all wired different,,,again,,,it cant work like that. Well did it work this morning,,,, yes,,,, but it cant work like that, never did work right.
I actually did this yesterday to my cheapo Harbor Freight grinders ($10 drill master and blue paddle switch). I mixed Super Lube grease with Super Lube gear oil, got it to a nice cool-honey consistency and replaced the factory grease with it. I noticed the grinders now start up much faster than they used to and are a bit more quiet. The $10 grinder would take about 4-5 seconds to reach full speed but that's now been cut down to about 1-2 seconds.
neophyte
Well-known member
Check ereplacement parts, or another tool parts supplier website.
I just checked the above website, since they have one of the better cross check databases plus, the employees are nice, and Dewalt has grease listed as a part for some of their angle grinders snd other tools.
The grease linked below was listed for 94 different Dewalt models.
From the picture, the grease is, Nye Rheolube 380G1 429954-01 .
The size is a 1lb tub.
It’s expensive at $121.72 for the pound.
https://www.ereplacementparts.com/dewalt-d28112-type-grinder-parts-c-1009_1166_3903.html
I found a spec sheet for the Rheolube 380 grease, this was the drscription.
“EP Fortified, Rust Inhibited
A lithium soap thickened, blended base oil gear grease suited for long life metal gears in automotive starters, power tools, and heavily loaded mechanical applications.”
https://shop.newgatesimms.com/wp-content/uploads/TDS_Rheolube_380.pdf
I tried looking the same grease up elsewhere and it seems to be a specialized and expensive grease.
This place has it, or at least did, and a 100gram tube was £58.40 , which is about $75, and there are about 454 grams in a pound.
Just a note.
If manufacturers want to manufacture multiple quality level lines of tools, one way to due so, is to use the same molds for things like plastic housings, but they change the color, like with Bosch blue and green lines, but they switch out modular components like bearings switches and even grease, for lower quality, cheaper alternatives.
If Dewalt is using this particular grease there is probably a reason why.
If you do want to switch it for a more affordable alternative, it’s best to use the same type of grease since some greases might not be compatible, and would require thorough cleaning of all the components possibly in contCt with the grease.
I just checked the above website, since they have one of the better cross check databases plus, the employees are nice, and Dewalt has grease listed as a part for some of their angle grinders snd other tools.
The grease linked below was listed for 94 different Dewalt models.
From the picture, the grease is, Nye Rheolube 380G1 429954-01 .
The size is a 1lb tub.
It’s expensive at $121.72 for the pound.
https://www.ereplacementparts.com/dewalt-d28112-type-grinder-parts-c-1009_1166_3903.html
I found a spec sheet for the Rheolube 380 grease, this was the drscription.
“EP Fortified, Rust Inhibited
A lithium soap thickened, blended base oil gear grease suited for long life metal gears in automotive starters, power tools, and heavily loaded mechanical applications.”
https://shop.newgatesimms.com/wp-content/uploads/TDS_Rheolube_380.pdf
I tried looking the same grease up elsewhere and it seems to be a specialized and expensive grease.
This place has it, or at least did, and a 100gram tube was £58.40 , which is about $75, and there are about 454 grams in a pound.
Just a note.
If manufacturers want to manufacture multiple quality level lines of tools, one way to due so, is to use the same molds for things like plastic housings, but they change the color, like with Bosch blue and green lines, but they switch out modular components like bearings switches and even grease, for lower quality, cheaper alternatives.
If Dewalt is using this particular grease there is probably a reason why.
If you do want to switch it for a more affordable alternative, it’s best to use the same type of grease since some greases might not be compatible, and would require thorough cleaning of all the components possibly in contCt with the grease.
American Locomotive
Well-known member
My old Black and Decker 9" grinder needed some new grease, and I tried the NLGI 00 Moly grease, but wasn't very happy with it. It just seemed to sling off the gears immediately. I'm sure the moly was still providing protection, but still.
I might give that CV axle grease a try, or maybe a heavier grade like NLGI 1.
I might give that CV axle grease a try, or maybe a heavier grade like NLGI 1.