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OT. 10 tires for lawn cart. Zerks, why?

G

Greenfrog

Member
The air tires from harbor freight dont seem to hold up. Dont last long. The rubber cracks.
I purchased a better quality 10 inch tire at Menards. Come with 5/8 bearings, and also a set of 3/4 inch. Bearings are not of high quality, that is, not precision, but adequate for slow lawn speeds, as these are going on a small hand cart.
Hubs have a grease zerk. One would have to fill up the entire hub to get any grease at all to what appears to be sealed bearings, or nearly so. Whats the point here?
I have three lawn tractors, two older cub cadets, and a new jd x590. I know the front wheels have a hub with lots of space between the bearings. <they have zerks br>Are we fooling ourselves trying to grease these little wheels? The grease is going nowhere? I saw a video on replacing the bearings on the blade spindles. Sealed bearings of good quality. It was concluded that the grease was not getting into the SEALED bearings! What? What? Are we being misled in the engineering here? Think on that.
I welcome you discussion thoughts on this.
 
Just pump a good thick grease in there until it comes out somewhere. NO it is not being wasted. It will be there to lube the axle when the not high quality bearings start turning on the shaft.

Do the same thing for the front wheels on your riders.
 
The zerks are put there to make you feel good when you grease it, just like a wheelbarrow wheel! If you fill it with grease then the axle won't rust so it will be easier to change next time!
 
The hub itself is universal and made long before it was welded to the rim on the tire you bought. . That hub could be used for many things in many different applications. Weld a flange to it with lug studs and use it on a go kart, use it as a hub on a two piece rim. Then it may be used where bushings are used instead of bearings.

A Grease zerk is added by the manufacturer of the hub due to some companies using the hub may require them. Others may not.
 

For sealed bearings you will want to "pop out" the inside seal. This allows grease to enter the bearings and exit the outside seal. The outside seal will prevent dirt etc. from entering the bearing. For bushings the hub creates a grease supply to keep the bushings lubricated. Oil in the grease wicks out and into the bushings over time. Yes they can get carried away with the size of the hub.
 
Do you fill your front hubs on your vehicles/tractors with grease or just pack the bearings and leave the hub dry? Same principle to me.
 

Some bearings that appear to be sealed are not.
The seals are only attached to the inner or outer race to create a flap that allows grease to be pushed in or out.
 
Good afternoon, Double07 and others: Many ball and/or roller bearings have a seal that is intended to face the outside (outdoors, if you will), this is a seal to keep dirt out. It does not keep grease in, that is not its purpose. Some vertical shafts are this way, like on some mowers.
.
Dennis M. in W. Tenn.
.
 
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