A dynamic load rating based on 50 km cannot be compared directly with one based on 100 km. For a ball-type linear guide using the same cubic life model, divide the 50 km rating by approximately 1.26 to express it on a 100 km basis. That conversion changes the reference basis, not the guide’s physic

Measure linear rail parallelism by moving a repeatable reference along one established rail and recording the relative position of the second rail. Check lateral separation and height difference separately, then repeat after final tightening. A carriage that travels freely is useful evidence of ass

A linear guide datum shoulder locates the rail or carriage against a reference face. Its height, corner relief and stiffness must match the selected guide drawing. A shoulder that is too high can foul the moving block; an oversized corner radius can prevent the rail from seating even when the mount