Thomson currently has two account systems - one for the website and CAD model downloads, and one for e-commerce. We understand that two logins is an inconvenience and are working to consolidate our systems into one login process. Until we’re able to consolidate the two logins, please follow these guidelines:
Roller profile rail bearings are similar to the ball profile rail bearings except
using rollers instead of balls bearings. Roller profile rail has lower elastic
deformation under load compared to a ball carriage, making it
Roller profile rails provide an even higher level of rigidity than double-backed ball profile rails by using roller bearings instead. Roller profile rails use the equivalent of a back-to-back bearing arrangement, complemented by special rollers that are crowned to prevent roller edge loading when misalignment is present. The result is lower elastic deformation as the load increases compared to a ball carriage or face-to-face bearing arrangement. Roller guides have a higher load capacity than profile rails with ball bearings as a result of the increased contacting surface across the length of the roller, due to the ball’s single point of contact versus a roller’s line contact area. This results in a substantially higher load carrying capacity and lower wear with minimum rolling friction. The cost of this increased precision and rigidity is even less tolerance for installation variance than double-backed ball profile rails.