Killing center spindle bearings yearly...
Posted July 09, 2015 - 08:38 AM
I blow the deck off after every use and try to keep everything dry. I don't over tighten the bearings and the belt tension seems good. Any suggestions on what I could be doing wrong?
Posted July 09, 2015 - 08:44 AM
Is the drive belt tension too tight? It will place undue stress on bearings that are not designed to withstand the stress that pulling creates. As the center pulley also provides the force to drive the other blades it does a lot of work..
- boyscout862 said thank you
Posted July 09, 2015 - 08:57 AM
Posted July 09, 2015 - 08:59 AM
Is the spacer between the bearings? If not, the bearings will die very early with any tension on the shaft nut/bolt at all.
- Cvans said thank you
Posted July 09, 2015 - 09:00 AM
It the blade balanced? What about the shaft, is it round and in good shape? How about the housing, is it mounted correctly and tight to the deck?
- Alc, boyscout862 and Bill 76 have said thanks
Posted July 09, 2015 - 09:47 AM
I'm with Daniel on having the correct spacer in place between the two bearings. Another thing to look for is to make sure the spindle shaft is straight. If it is bent even a little your going to damage the bearings in a short time. If you don't have a lathe roll it across a flat surface to check straightness. Is it one or both bearing going out? File off any burrs from the shaft where the bearing sets. Most of these spindle bearings are a press fit and if there are any dings in the shaft that protrude it can distort the inner race on the bearing and cause a failure.
- Alc and HDWildBill have said thanks
Posted July 09, 2015 - 10:44 AM
Edited by Earl, July 09, 2015 - 12:53 PM.
- olcowhand and Cvans have said thanks
Posted July 09, 2015 - 12:11 PM
I'm wondering if its bent or malformed somehow and that's causing you issues.
- Bill 76 said thank you
Posted July 11, 2015 - 09:42 AM
Posted July 11, 2015 - 10:54 AM
- KennyP and Cvans have said thanks
Posted July 11, 2015 - 11:31 AM
My old MTD LT was good about loosing a bearing every year. & yes, they were the cheapys!
Posted July 11, 2015 - 02:27 PM
Have you checked the blade and made sure it is balanced?
Posted July 12, 2015 - 08:40 AM
If this doesn't last I'm going to get a new shaft for it (or a new spindle all together).
- olcowhand, MH81 and HDWildBill have said thanks