PBC Linear often gets inquiries from customers interested in the plain bearing feature of our Gliding Surface Technology in order to solve their long travel applications. Some specific products within this family includes Uni-Guide, Low Profile Uni-Guide, and Mini Rail. In addition, our ceramic coated shafting, also known as aluminum feather shafting, and ceramic coated rail, or feather rail, both fall under the gliding surface category.
Corrosion resistance and light weights are attractive features for these product lines. Although all of them are excellent products and great choices for a wide range of applications, they do not lend themselves well for end joining. The simple reason is that linear plain bearings and carriages that employ plain bearing technology have a precise running clearance for which alignment is critical, and these end joints have a high probability for binding due to misalignment. Also, the carriages for Uni-Guide, Low Profile Uni-Guide, and Mini-Rail are matched to the rail, making the addition of rails problematic.