Bearing/insulating sleeve lubrication?

**BillyCarpenter** · 01-23-2021, 02:17 PM

Re: Bearing/insulating sleeve lubrication?

Personally, if I'm installing a new bearing or bushing, I leave 'em dry. My rule of thumb is if it didn't come from the factory with oil or grease on it, then I don't put it on. I'm talking about new bearings and bushings. If it's squeaking or making a noise, then I will.

I've seen a lot of techs put grease or oil on a sealed bearing and I've found that of little help because the ball bearings are sealed and the oil really doesn't get in there.

There's a lot of good oils and greases out there. Just don't use WD 40.

**Toxic** · 01-23-2021, 02:27 PM

Re: Bearing/insulating sleeve lubrication?

I am ok with new bearings, they come with lubrication inside but insulating sleeve does not and it have double friction, with roller on one side and bearing on the second side.
I have seen insulating sleeves chew up totally and make gap between roller and bearing.

**BillyCarpenter** · 01-23-2021, 02:33 PM

Re: Bearing/insulating sleeve lubrication?

Originally posted by Toxic

I am ok with new bearings, they come with lubrication inside but insulating sleeve does not and it have double friction, with roller on one side and bearing on the second side.
I have seen insulating sleeves chew up totally and make gap between roller and bearing.

What new bearings are you talking about that come with lubrication from the factory? In my experience most don't. The service manual will usually specify which need lubrication. And I know for a fact that the brass bushings that are used in a copier are meant to run dry. I've seen techs oil the brass bushings or worse, put grease on 'em and every particle of dirt gets attracted to the brass bushing and wears a groove in the shaft. Cleaning is what is called for with those, not grease or oil.

When you say insulating sleeve, are you referring to the fuser?

**Toxic** · 01-23-2021, 02:43 PM

Re: Bearing/insulating sleeve lubrication?

Yes, i am talking just about fuser bearings and insulating sleeves.
I never open new bearing to check but i think it must be some lubrication inside, that is why they are almost sealed from both sides and without problems they survive 1-2 mil. copies at high temperatures.

**BillyCarpenter** · 01-23-2021, 02:50 PM

Re: Bearing/insulating sleeve lubrication?

Originally posted by Toxic

Yes, i am talking just about fuser bearings and insulating sleeves.
I never open new bearing to check but i think it must be some lubrication inside, that is why they are almost sealed from both sides and without problems they survive 1-2 mil. copies at high temperatures.

Here's my experience with fuser bearings/bushing. I never put oil on them because the high temperature of the fuser is gonna burn the oil off and smell up the customer's office. If you need to use grease, use a high temp. grease.

**BillyCarpenter** · 01-23-2021, 03:15 PM

Re: Bearing/insulating sleeve lubrication?

One last thing and I'm gonna be completely honest.

There are times when a machine is squeaking and if the bearing is hard to get to, I'll roll the dice and put a few drops of oil on it. Sometimes it works great, other times I get a callback and then have to disassemble/inspect or replace the bearing/shaft.

I used to work for a company and one of the techs would NEVER do anything but drop some oil on a worn bearing. He thought he was being smart because he knew the squeak would go away for a few days or long enough for him to get out the door and most of the time another tech would go behind him to fix the problem. That worked for a while until he almost got fired.

**konicavod** · 01-23-2021, 03:27 PM

Re: Bearing/insulating sleeve lubrication?

Originally posted by Toxic

I just try search Infohub and find this
00GR00260 Grease(Multemp FF-RM)

you need molykote hp-870

**allan** · 01-23-2021, 04:00 PM

Re: Bearing/insulating sleeve lubrication?

Only current machine i work on where the manual instructs to smear a thin layer of high temp grease on the sleeves only would be the Pro951 and up.
That is also not to lubricate but to set the sleeves in place. Been using Q20 and since then not a single chewed heat sleeve after that.

Also don't like to lube things.

**blackcat4866** · 01-23-2021, 05:04 PM

Re: Bearing/insulating sleeve lubrication?

Creaky fusers are common on Sharp, Konica Minolta, Kyocera.

Sharp put out a bulletin to use HP-500 on the inside and outside of the heat roller bearing contact surfaces, and for the most part the fusers would nearly make the PM cycle before they started creaking again. I'll tell you right now that it's expensive.

The other lubricant that I use is the fuser film lubricant for HP heat sleeves: Uniflor 8172
UniFlor 8172 Uniflor Fixing Film Grease, Genuine (S4800)

The other time I use high temp grease is anytime a metal bearing contacts a metal roller or shaft. The continual expansion and contraction from heating and cooling the fuser will seize the bearing to the shaft. A small dab of high temp grease will allow that bearing to slide right off later on when you want to rebuild.

One last comment: Chemplex is not a good choice. Back 30 years ago when that was the only choice ... yes it kept one-way bearings from seizing, yes it loosened up seized fuser bearings, ... but it smoked and stank for weeks afterwards. You could walk into the room with the copier and the smell would waft over you, and you'd think: "Yep, Chemplex in the fuser. MMMMM."
=^..^=

**konicavod** · 01-23-2021, 05:20 PM

Re: Bearing/insulating sleeve lubrication?

try to find in KNOVA "bizhubPRESSC1100.1085_Please alert to lubricate at the same time with the replacement of the fusing parts._v1.0EN.doc"

**BillyCarpenter** · 01-23-2021, 05:36 PM

Re: Bearing/insulating sleeve lubrication?

No matter what company I've worked for or in what city, I've found one thing to hold true.

Most techs are passionate about their grease & lubricants. I've seen techs that mix up their on concoction of this oil mixed with other oils. Some will only use automotive grease. If you get into a conversation about it, you may be there a while.

**allan** · 01-23-2021, 05:41 PM

Re: Bearing/insulating sleeve lubrication?

Originally posted by BillyCarpenter

No matter what company I've worked for or in what city, I've found one thing to hold true.

Most techs are passionate about their grease & lubricants. I've seen techs that mix up their on concoction of this oil mixed with other oils. Some will only use automotive grease. If you get into a conversation about it, you may be there a while.

I do keep a small pill bottle filled with wheel bearing grease for good measure. Never seem to use it.

**BillyCarpenter** · 01-23-2021, 05:45 PM

Re: Bearing/insulating sleeve lubrication?

Originally posted by allan

I do keep a small pill bottle filled with wheel bearing grease for good measure. Never seem to use it.

Oh I use grease, I just don't put in on a lot of things like I see some techs do.

**Bix** · 01-23-2021, 06:56 PM

Re: Bearing/insulating sleeve lubrication?

Hi, I got 00GR00260 grease from Konica Minolta.
This is resistant to very high temperatures and is perfect for lubrication and noise. But definitely expensive!
You don't have to put in much, you almost have to brush it and it's still efficient.

Bearing/insulating sleeve lubrication?

Bearing/insulating sleeve lubrication?

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