Friday, Aug 25, 2023 at 11:29
I think you will find there is no grease nipple in the end of the axle! If there was, when greased by any gun of auto delivery system, the grease would automatically ooooze out between the rollers of the outer bearing.
If it had a nipple in the axle the outer cap would have to be removed to grease it.
I the grease got hot it would simply run out of the drum after lubing the brakes.
That might have had a greaseable cap though, it appears to be on a trailer or van, ie 2 axles. Greasing that would punch the seal inwards with hydraulic pressure.
Most people don't add sufficient grease to a hub to have long bearing life. It has to be above the smallest dia of
the cups to provide recirculation of lubricant when the grease does get soft or liquify a little.
The seal is an oil seal but works for thick stuff like grease too.
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