... Ring Inside Dia. (In.)3.0512Outer Ring Inside Dia. (mm)77.5Inner Ring Outside Dia. (In.)2.1063Inner Ring ... Roller Bearing, Open, Bore 40 mm, Bore Dia 1.5748 In, -0.0005 Tolerance, Outside Dia 90 mm, Outside Dia 3.5433 In ... , -0.0006 Outside Dia Tolerance, Width 23 mm, Width 0.9055 ... Photo of our factory: Ntn Cylindrical Roller Bearing, Bore 40 mm