When replacing the ball screw or ball nut there are two different styles, 1610 or 1616. This chart will show which one goes with each rail.
Ball Screw:
1616:
Foreman/Journeyman Length:
Woodworker Length:
1610:
Ball Nut:
1616:
1610:
How to replace ball nut and ball screw videos:
How to clean ball nuts:
X50/1616:
X35/1610:
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