 A little more | |
To add to what Torsten said the two tapered bearings go on one end and are either back to back in direct contact or have a spacer that keeps them a distance x apart. The bearing-bearing or bearing-spacer-bearing stack is usually a skant couple of thousandths taller than the holder. This way the whole enchilada has a slight crush when the end plates are tightened down-and is immoveable.
I have one in the other room. Hold on. (Magic time delay while Lance takes a picture or two). Bingo. Take a look. The first is from a big, long screw. The others are from a small slide. On these others note how the assembly on the motor end checks lateral movement while the far end (the thin plate) just has a straight roller bearing that's pressed in. Same effect, different approach. |