Proper bearing lubrication
Proper bearing lubrication
(OP)
I was wondering if there was any solid idea's or evidence on motor bearing lubrication procedure. I have read several different recommendations on the proper way to grease a motor bearing. Some say shut the unit down to grease, but the majority that I can find say lube it while running. I'm on the running side of things, but wanted some more feedback. Thanks.





RE: Proper bearing lubrication
Sometimes however this is just not possible.
RE: Proper bearing lubrication
You will notice some temperature rise, bu th ebearing should settle sown to it's original running temp once it has purged the excess.
How much and how often can be advised by your bearing supplier. The old formula's in the books are good standby's, but modern lubricants are far better than the old ones on which these are based.
Lester Milton
NBC Group Ltd, Telford, Shropshire, UK
RE: Proper bearing lubrication
1. The bearing cannot have a mechanical seal. The grease must be able to flow out past the seal without creating internal pressure. I have seen a bearing go from 25C to 82C in about 2 minutes due to over greasing. The oil will flow out of the grease and then the grease is useless and will provide no lubrication. If unchecked, the bearing will then fail.
2. In motor bearings, a very good long-term grease is needed. One with a type II or III base oil or even a PAO. The grease must be able to last for up to 6 months. Over-greasing of these bearings can cause oil leakage into the windings and subsequent motor failure due to internal grounding. The oil attracts conductive particles and arcs across the small cracks in the winding insulation.
RE: Proper bearing lubrication
RE: Proper bearing lubrication
link: www.UVLM.com
Thanks,
Wally
RE: Proper bearing lubrication