Then we put the long end of the allthread through the backside of the wheel hub. Put on a lock washer, and another nut and finger tighten the allthread to the hub (no need to get things tight here - just finger tight is what we want). Do this with all 4 studs, and then run a nut onto the front of each stud so that about 1/4" of allthread is protruding. So, if we look at one stud here starting at the front (left to right in the picture) here is whats important: 1/4" of allthread, 1 nut, more allthread, a nut, a lock washer, the wheel hub, a nut, and then 7/8" allthread.
We take the back magnet rotor (the one with only 4 holes) and turn it so that the magnets face down on the bench. (be sure the bench is clean from metal bits)
Take the back of the hub and put it into the hole in the magnet rotor, such that the ends of the studs (the ends that are 7/8" long) are poking into the 4 holes. We do this to align things before we tighten anything. |
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| 60# 发表于 2010-8-30 13:34 | 只看该作者
The front and back bearings are identical for this wheel hub. Put one of the bearings on the wheel spindle and push it back all the way. It's probably a good time to mention... usually when you order a hub, it comes with a seal. We do not use the seal in a wind turbine, it creates too much friction and prevents easy startup. I believe if we grease the bearing well then they should be fine for quite a long time.
Carefully pick up the hub/back magnet rotor by the studs and place it onto the spindle, up against the back bearing.
Then insert the front bearing. Usually at this time I press a little more grease into the front of the bearing... can't hurt. |
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