Combine Bearing Replacement ?
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=177942
Printed Date: 12 Sep 2025 at 10:35pm
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Topic: Combine Bearing Replacement ?
Posted By: FREEDGUY
Subject: Combine Bearing Replacement ?
Date Posted: 29 Jan 2021 at 6:25pm
There's a post on AT about bearing checking/ replacement on the separator side of a machine (the guy is looking at a JD 9600) and a respondent said 2000 hours was the "replace/trade off" time frame for his operation  . I really thought bearings lasted a little longer than 2000 hours  ?? What have you guys experienced with bearing longevity ?
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Replies:
Posted By: steve(ill)
Date Posted: 29 Jan 2021 at 7:20pm
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80% of all bearings fail due to lack of lube / dirt. another 10% fail due to miss alignment / install damage. VERY FEW fail from being overloaded or end of life.. Most bearings are DESIGNED to run longer hours. I cant speak for that SPECIFIC bearing, but in "GENERAL", ........ Ag equip is designed for 5,000 hours ... ( some applications could be half that) light duty cars / trucks are designed for 2,500 hours industrial equip ( factory) is designed for 20,000 hours
------------- Like them all, but love the "B"s. |
Posted By: shameless dude
Date Posted: 29 Jan 2021 at 9:57pm
| alot of combine bearing fail because the owners/operators power wash them. |
Posted By: JPG AUSTRALIA
Date Posted: 30 Jan 2021 at 12:20am
| Steve is spot on 👍 A bearing will last for nearly ever if it has clean grease and not misaligned,... and no water😀. |
Posted By: FREEDGUY
Date Posted: 30 Jan 2021 at 5:12pm
I have no issues with the replies that Steve posts on the equipment/shops-barns-vehicles sections and I have great respect for them,
 !! He's a straight shooter in those regards !!! |
JPG AUSTRALIA wrote:Posted By: GM Guy
Date Posted: 07 Feb 2021 at 5:17pm
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Depends mostly on lube and load. we rarely rear walker shaft bearings, but usually end up replacing left fan shaft bearings on L/M series. On machines stored outdoors, a shot of teflon infused penetrating oil really helps to limber up an old bearing. ------------- Gleaner: the properly engineered and built combine. If you need parts for your Gleaner, we are parting out A's through L2's, so we may be able to help. |
Posted By: Krazy Karl
Date Posted: 07 Feb 2021 at 7:00pm
| All depends on maintenance. Maybe guy had bad experience once and in his mind replacement during off season is better than down time during harvest. |
Posted By: CrestonM
Date Posted: 13 Feb 2021 at 10:00pm
Would that help only if the seals were bad? |