Gun grease

Midway · Apr 12, 2022

Just wondering what the best tube gun grease is for wheel bearings on my flatbed 3500lb axles. They have zerts. Thanks.

Janicholson · Apr 12, 2022

Ford Graphite based grease is Wheel bearing Rated. Jim

Cash4Toys · Apr 12, 2022

Doing it that way is kind of iffy. Seems like a good idea, but its not. Too much grease and you push the seals out, not enough, well there is another issue. Had taken my new trailer to the dealer to have the bearings re-packed. Next time, which was a short time later cause the brakes were acting up, I took it somewhere else. Pulled the hubs, two had seals pushed out and the brakes were full of grease, one was ok, the other was darn near dry. The first place never pulled the hubs. Guys told me they see this happen all the time.

SVcummins · Apr 12, 2022

I use John Deere full synthetic push enough grease it start to come out the seal whipe off the excess and go do it that way a couple times a year do they same thing on all my tractors and implements . This old trailer has carried some big loads in its day .

BarnyardEngineering · Apr 12, 2022

I like Mystik JT6 grease for wheel bearings.

The way EZ-Lube axles work is, the ZERK leads to a passage that comes out between the inner bearing and the seal.

To properly lube the bearings, you pump grease in while turning the wheel occasionally. What is supposed to happen is the grease pushes through the inner bearing, fills the cavity between the bearings, and pushes through the outer bearing. Continue pumping grease in until the old dirty grease is gone and new fresh grease stops coming out.

It takes a TON of grease, the better part of a tube per hub. Even when it works right, it makes a HUGE mess, a whole tube worth of dirty nasty grease per hub. It's also a huge waste of grease, as you would not pack the hub solid with grease normally.

That's if the seal does not fail and let you fill your brake drum with grease.

In reality it does not take any longer to pull the hubs and repack the bearings. This is just a cop-out for people who are afraid of the task.

Steve@Advance · Apr 12, 2022

I agree, not a fan of greasing trailer brakes with a grease gun.

Implement wheels without brakes, yes, especially the ones without a lip seal, just a felt. It helps push dirt out.

But packing the entire hub cavity full will cause overheating at highway speeds, which will expand the grease to the point of getting past the seal, or outright pushing the seal completely out, either from expansion or the grease gun pressure.

Best to take them apart every few years, clean and inspect, hand pack the bearings with wheel bearing grease of your choice.

showcrop · Apr 12, 2022

The most important thing is self restraint to not do it too often and not much when you do.

Tracy Brown · Apr 12, 2022

X2 !!

jon f mn · Apr 12, 2022

I say don't do it, roo much grease is bad. Just properly grease the bearings once a year or so and leave the hub empty.

rustred · Apr 12, 2022

yep, thats the way uh ha. u dont fill the hubs ever. pack the brgs and thats it.

caterpillar guy · Apr 12, 2022

I would convert to oil bearings and seal and forget about all the nonsense associated with grease packed bearings. Cap to pullout to fill and a quick look to see that they have oil. Run them for millions of miles on semi trailer and will work on little trailers too.

Gun grease

Midway

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Janicholson

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Cash4Toys

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SVcummins

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BarnyardEngineering

Well-known Member

Steve@Advance

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showcrop

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Tracy Brown

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jon f mn

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rustred

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caterpillar guy

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