The Fafnir SM1115K MUB 1-15/16 Roller Ball Bearing With Collar is a Fafnir-brand bearing featuring a built-in collar. The model SM1115K MUB specifies this particular size and configuration within the Fafnir catalog. This collar-equipped roller bearing is used in assemblies that require a bearing with an integrated collar for precise seating and alignment in motion-enabled parts.
