Posted by Tom Petroff (IL) [108.162.216.13] on Saturday, February 17, 2018 at 18:58:58 :
In Reply to: Re: My theory- posted by Kaegi [172.68.143.51] on Saturday, February 17, 2018 at 18:23:33 :
It's a carry over from the military spec.
Trying to keep grit/water out of the bearings.
Tom