Linear bearings and guides should be limited to around 20 feet or less. The components do not lend themselves to butt coupling, which makes exceeding 20 feet quite difficult. A wide range of linear bearings and guides exist. Some are stable in all directions while others can only handle moments around certain axes, e.g. yaw but not pitch. Specifying a bearing that addresses only the forces involved can save money. This is where Motion Solutions engineers can help.