I am in the process of refurbishing this "PTO assembly" I got at a swap meet a few weeks ago.
As you can see, it is a severely shortened drive shaft set-up with matching length of drive shaft, one end to the u-joint as normal and the other end sticking out past the roller bearing with a flat belt pulley attached. There is a grease cup that has been tapped into the bolt that hold the bearing sleeve in place. That should work great for greasing the roller bearing, but what about the thrust ball bearing? Will any grease make its way there? I will pack it full of grease once I assemble the unit...is that enough?
A seal is being fabricated for the open end of the roller bearing so that all of the grease doesn't go out that end.
So--a well-greased thrust bearing should be ok?
Thanks for your input.
Seems like it would not be hard to take it apart after a few hours of use to see how much grease is still in it and go from there.
You can always repack it once in a while but I would guess there is not much pressure or thrust against it and it would be a long time before it would get dry enough to cause heat & wear.
consider how slow it will be running compared to late model car or truck's center drive shaft carrier bearing that doesn't get greased and lasts for over 100,000 miles.
Pack it with any chassis grease but disc brake wheel bearing grease is what I would use.
Aaron,
Thanks for the comments. I will use your idea about disc brake wheel bearing grease. That should hold it pretty well. After all, it will get rather limited use...