Series 475 Cone Part Number 482 Cup Part Number 472 Design Unit Inch Cage Material Stamped Steel Dimensions d - Bore 2 3/4 in 69.850 mm D - Cup Outer Diameter 4.7244 in 120.000 mm B - Cone Width 1.1420 in 29.007 mm C - Cup Width 0.9542 in 24.237 mm T - Bearing Width 1.1730 in 29.794 mm Abutment and Fillet Dimensions R - Cone Backface "To Clear" Radius1 0.14 in 3.600 mm r - Cup Backface "To Clear" Radius2 0.08 in 2.03 mm da - Cone Frontface Backing Diameter 3.03 in 77 mm db - Cone Backface Backing Diameter 3.27 in 83.0 mm Da - Cup Frontface Backing Diameter 4.53 in 115.06 mm Db - Cup Backface Backing Diameter 4.21 in 106.93 mm Ab - Cage-Cone Frontface Clearance 0.12 in 3 mm Aa - Cage-Cone Backface Clearance 0.04 in 1 mm a - Effective Center Location3 -0.16 in -4.1 mm Basic Load Ratings C90 - Dynamic Radial Rating (90 million revolutions)4 8360 lbf 37200 N C1 - Dynamic Radial Rating (1 million revolutions)5 32200 lbf 143000 N C0 - Static Radial Rating 41900 lbf 186000 N Ca90 - Dynamic Thrust Rating (90 million revolutions)6 5500 lbf 24500 N Factors K - Factor7 1.52 e - ISO Factor8 0.38 Y - ISO Factor9 1.56 G1 - Heat Generation Factor (Roller-Raceway) 77.2 G2 - Heat Generation Factor (Rib-Roller End) 23 Cg - Geometry Factor10 0.108