|
I haven't read the whole thread so forgive me if I'm making a useless post.
Every time I've had a bearing fail, it has been on the bottom side of the spur gear, and never on the sector or bevel. My guess is that is because on the sector gear and spur gear, mechanical contact is made on both ends of the gear, whereas the spur gear only makes mechanical contact on one side. That put's almost the entire load of the spur gear on one bearing bushing.
|