Several customers have asked, "What would I safely size a locating step for a Misumi linear guide rail?" We do not specify the chamfer size on most of our linear guide rails and it's not easy to determine the maximum radius on the step. If you look at our height adjust blocks (GETA for miniature guides and BETA for standard guides), you will see the reference step feature for each size of the corresponding linear guide. You will also find step height and maximum radius for this product. It is safe to use the same dimensions for your locating step feature. The spacer height is configurable in 1mm increments. Many of our linear guides are now offered with mounting dowel holes on either the rail or blocks or both, which will allow you to get by without the locating steps altogether.
To find the actual chamfer size of a linear guide rail, please see our Global Voice article below: Explanation of Linear Guides The Design of the Slide Guide Mounting Face.