Our linear products are delivered with end stops: pin covered with rubber. They are designed as permanent end stops.
In case of additional end stops, it is important not to bump on the plastic part of the runner.
End stop for transportation:
Our linear products can also be delivered with transport end stops that are designed only to prevent the carrier from coming out of its rail. They should not be used as permanent end stops.
It is very important to retain the runners with end stops. Indeed, if the runner should come out of its guidance rail, the balls, not being trapped would fall free and get mixed up. It would then be impossible to mount the runner again as we make up for the manufacturing tolerances by using slightly different ball diameters.