An expanded line of linear ball bearings from Quality Bearings & Components are stocked in both U.S. and European standard specifications. These steel bearings conform to AISI 52100 standards and are hardened to HRc 60-64. They are available in adjustable, open or closed and standard or heavy-duty types. They are stocked in inch and metric sizes with bore sizes that range from .375" to 1.500" (8 mm to 40 mm) diameter. The number of ball circuits in each unit can range from 4 to 8. Unit lengths range from .875" to 3" (25 mm to 80 mm).