arborworks1
Treehouser
I'm not up to speed on how often I should be replacing the drum bearings on the woodsman? I have over 1000 hrs on the current bearings. Grease them religiously(every 6-8 engine hours).
Chipper Bearings Lube Question
- Thread starter arborworks1
- Start date
- Replies 24
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N
NeTree
Guest
Are they worn?
M
Mr. Sir
Guest
When they fall apart.
G
Greenhorn
Guest
Slight derail - Vermeer guy told me to grease bearings on my disc while it spins, just thought I would share - or is that common knowledge?
N
NeTree
Guest
Should be common knowledge, but nothing wrong with bringing it up, either. 
lumberjack
Young man on the go
Over greasing will do way more harm than good, fwiw.
R
Ridgey
Guest
You should grease at the end of the day when the bearing is hot and grease till they purge,4000hrs is about the time a well greased bearing should last with correct knive changes.
Al Smith
Mac Daddy
They take a lot of impact .Now then on those bearings ,are they a double lip seal ? If so if you over grease them you take a chance of blowing the seals out .Singlle lip,dust exclusion only it doesn't make any difference .
I don't really know but I do know you can blow the seals out of the track rollers on a dozer if you over pressurize them .
I don't really know but I do know you can blow the seals out of the track rollers on a dozer if you over pressurize them .
lumberjack
Young man on the go
Good point, Al.
I all but stopped greasing my grinder's main bearings and they're lasting longer than ever.
I all but stopped greasing my grinder's main bearings and they're lasting longer than ever.
MasterBlaster
Administrator Emeritus
It's weird how that happens.
PCTREE
Treehouser
On my morbark 17 chipper I have 2 different types of bearing on the drum. On the drive side I have a pillow block bearing which has a housing that holds about a tube of grease, NEVER grease that as if you get too much grease in it it will destroy the bearing. The other side has a flange bearing which really isnt up to the job I grease that every week but after about 3 months or so the housing gets wallowed out and they stop taking grease (grease squirts out around the bearing not in it) I have to change that bearing 2x a year due to this. If I wasnt such a lazy sot I would put another pillow block on it like my 2400 has but that would be a big job......
lumberjack
Young man on the go
You have a 2400? 
arborworks1
Treehouser
- Thread Starter Thread Starter
- #13
Technically!!
brendonv
Tree Hugger
You can't see where the grease is coming out of on my drum bearings, I do a few pumps every couple weeks. Only other bearing is one side feed roller. Takes about two pumps until it's purging.
sotc
Dormant hero!!
Once or twice a week depending on how much we run it
squisher
THE CALM ONE!!!!
I grease mine daily. That's what the manual says to do on a 250xp. They claim that it can't be overgreased. Why would some here think that to much grease would be bad?
My uncle always told me, "Grease is the cheapest mechanic you'll ever have". In the woods we greased religiously and if you didn't sh-t fell apart quick.
My uncle always told me, "Grease is the cheapest mechanic you'll ever have". In the woods we greased religiously and if you didn't sh-t fell apart quick.
Cobleskill
Treehouser
Anybody try synthetic grease to see if you get more bearing life? I have two guns - one with multi purpose and one with moly grease. Moly is great for loader and bucket hinge pins, tie rod ends, king pins, anything with slow rubbing.
Al Smith
Mac Daddy
It depends on the type of seals Squish .If they are double lipped ,in other words sealing lube in and dust out you only apply pressure until you feel resistance .Any more will blow out the seals .A grease gun has like 5 to 10,000 psi .
On a single lip which is just dust exclusion only you could pump the whole tube in .It just squeezes out the seal .That type seal kind of acts like a one way check valve ,sort of .
Now I have no idea what type seals a praticular chipper bearings use ,that example is just generalities .
On a single lip which is just dust exclusion only you could pump the whole tube in .It just squeezes out the seal .That type seal kind of acts like a one way check valve ,sort of .
Now I have no idea what type seals a praticular chipper bearings use ,that example is just generalities .
Al Smith
Mac Daddy
Just for general information try a Google search on over greasing bearings .There are pages upon pages on the subject .Very interesting and explains certain things like the grease lubricant breaking down ,types of grease, seals etc .Things I really never gave much thought to until I did some reading .You can kind of draw your own conclusions on the subject after some research .
MasterBlaster
Administrator Emeritus
I read that book several times many years ago. The movie was kinda gay, but it was chock full of up and coming new movie stars.
darkstar
Rockclimber/ treeclimber
Mixing grease is bad juju.
BBs can be greased alot - you cant blow the seal on the older models because its already blown hahahahahah.
most of the time
BBs can be greased alot - you cant blow the seal on the older models because its already blown hahahahahah.
most of the time
squisher
THE CALM ONE!!!!
You can't blow the seals on a Bandit because they're the latter type that Al was referring to, you could push a whole tube of grease through if you want. I'll keep greasing daily.
darkstar
Rockclimber/ treeclimber
Ill never have any chipper than a BB
