FAG 1315 -M Self-Aligning Ball Bearing - 75 mm ID, 160 mm OD, 37 mm Width, Cylindrical Bore, Normal Misumi but they are essentially to

but they are essentially to provide a better protection and grip for your tools

The wing nut is robust and resistant

This induces currents in the component

Superior alignment performance and long-term industrial durability are achieved with an innovative instrument design that offers high measurement accuracy and excellent protection against dust and water in harsh environments

hard-to-access spaces

FAG 1315 -M Self-Aligning Ball Bearing - 75 mm ID, 160 mm OD, 37 mm Width, Cylindrical Bore, Normal Misumi but they are essentially toSelf Aligning Ball Bearing Self Aligning Ball Bearings have two rows of balls and a common concave sphered raceway in the outer ring. They are insensitive to angular misalignment of the shaft relative to the housing. Manufactured to precision tolerance class for demanding applications. Suitable for use in a wide range of industrial applications where reliability and performance are essential.