Skip to content Skip to navigation

Design and Theory

In a round rail linear guide the outer race is the linear bearing while the inner race is the shaft.  In this training section we will be focusing on the linear bearing (outer race).

Inner and outer race

Linear bearings are made in closed and open configurations.  The following video explains the differences between closed and open ball bushing bearings and which one to choose.

Closed vs open linear bearings

Learn more about selecting shafting here.

Round vs Square rail

The advantage of RoundRail is its inherent ability to accommodate torsional misalignment (caused by inaccuracies in carriage or base machining or by machine deflection) with little increase in stress to bearing components. This important feature to all Ball Bushing® Bearing systems reduces installation time and cost, while maximizing performance.

back to top