Barry
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In most recirculating ball steering boxes, the ball nut (the gizmo that surrounds the worm gear and moves axially when the worm gear rotates) has a rack gear that engages a sector gear that rotates a Pitman arm. The Series Alpine steering box is weird in that the ball nut does not have a rack gear that engages a sector gear, but instead has a "tapered pin" that engages a "fork" that rotates the Pitman shaft. Weirdness aside, I am struggling to understand how ball bearings can be split in the Burman box. As with other recirculating ball steering boxes, the ball bearings in the Series Alpine steering box serve to reduce friction and "slop" between the worm gear and the ball nut. The purpose of having many small ball bearings is to distribute the mechanical load among many bearings. It seems to me that ball bearings can only be split by the application of an extreme point load force on only a few balls (maybe only one) rather than being more or less equally distributed among many balls. It also seems to me that the only way that the force can be concentrated on only a few (maybe only one) balls is if the worm gear is worn in spots or if some (maybe only one) of the balls are larger in diameter than others.
I am also struggling to understand what (if anything) that power steering has to do with ball bearing failure. Again, it seems to me that the same amount of torque is applied to the steering shaft whether or not there is any power assist.
Don't claim to have the answer(s), just trying to think logically about the process.
I am also struggling to understand what (if anything) that power steering has to do with ball bearing failure. Again, it seems to me that the same amount of torque is applied to the steering shaft whether or not there is any power assist.
Don't claim to have the answer(s), just trying to think logically about the process.