Sealed bearings on a mower hub?

[joeyd]

Hi - Got a older commercial walk behind here with 1 blade hub that's pretty noisy. Thought the bearings are dry so I went looking for a grease fitting on the hub, but there isn't one. Took apart the the hub and the bearings are sealed on both sides. I've rebuilt a few hubs in the past, including Cubs, and they have a grease fitting and the bearings are open on the inside so the grease gets to them. Anyone have experience with these sealed bearings? How long do they last? Should I drill and tap a hole for the grease fitting and take the seals out of the inside of the new bearings? I guess I'm used to greasing those hubs every now and then.....

 

[lpalma]

Leave them as is, do not remove the seal.

 

[Jay Fetters]

We have three cub pro-z 500

s models at work. All 3 have sealed bearings on the decks and all 3 have over 200 hours with one over 400 hours. I have yet to replace a belt or spindle. There is a night and day difference between cubs commercial products and their residential products.

 

[joeyd]

OK thanks. I'll just put the new bearings in with the seals intact. I'm just familiar with old equipment I guess, kinda like me:>)