Combines Front rotor bearing moly greaseIJIJIJ

Some molys and lithiums dont play well together. If you're running lithium now, stay with it. That bearing should never get hot, if it does, moly grease wont do any good, you have another problem that needs to be addressed. I will grant you that it is a radial bearing that is subjected to some thrust load, but not enough to worry about. Have you been having problems with this bearingIJ If so whatIJ

No problems, just trying to aviod one. New to rotory combine ownership, thought maybe was a problem and big boys decided moly was best way to fix it. Always used IH 251EP in the past to lube all combines and had good luck. Doubt moly was ever used on this one, seems most guys use one type of grease for everything, we use three. Also wondered about mixing, both tubes of grease say do not mix with other soap based grease. Parts guy didn't think it would be a problem but if it was I don't think he would use his money to fix if a problem did arise. Do you know exactly what could happen if mixed. Also are there any patterns as far as wear or bearings failing after so many hours. 99 2388 w_ 1400 sep hours, feeder house was gone through a year before we bought it.

Well, I was considering switching to moly on a few pieces of equipent that have extreme bearing loading going on, a few years back. I did some research on it and found it probably would'nt be a good idea to mix them. I dont understand a lot of the high powered technical words, but I think it has something to do with breaking down the lubricability of the grease when they are mixed. Most of the high end lithium greases out today seem to have a bearing load almost equivelent to the moly anyway, so I'm just going to keep on with the lithium. On the machine wear, well that depends on so many variables that I'd be afraid to answer with anything definate. I'm in Oregon so we are very fortunate in that we usually dont get much rain during harvest, so I dont wash my machine very often with water. I usually get by blowing it off with the blower after removing all shields and panels. If you wash your machine, you will likely have to replace more bearings. After washing it is very important to grease all zerks imediately to avoid rust pitting in the bearings if any moisture were to get in them. Usually the front rotor bearing, if you keep it greased should last a long time. Biggest thing is to make sure you keep the bearing from getting rapped with material stems and vines. If this happens, the bearing will get hot and the seal will fail. Then you got problems. Hope that answers your question somewhat.

Thanks for the info. We always blow combine off with air but do wash the sheet metal from time to time. We don't let anything set out in the weather, have a 78 MF 760 that hasn't been rained on more than 20 times, and thats because we just didn't quite make it to the barn before rains hit. Never saw any advantages to letting machinery sit out, seen some guys let almost new eqiupment sit out for months with empty space in a barn, drives me crazy, just one of my little quirks.

Same here, I cant stand seeing stuff sit out when its not nesasary.

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