Series 3400 Cone Part Number 3490 Cup Part Number 3423D Design Unit Inch Cage Material Stamped Steel Dimensions d - Bore 1 1/2 in 38.1 mm D - Cup Outer Diameter 3.2500 in 82.550 mm B - Cone Width 1.1721 in 29.771 mm C - Double Cup Width 2.1875 in 55.563 mm T - Bearing Width across Cones 2.6251 in 66.678 mm Abutment and Fillet Dimensions R - Cone Backface "To Clear" Radius1 0.14 in 3.600 mm r - Cup Backface "To Clear" Radius2 0.03 in 0.8 mm db - Cone Backface Backing Diameter 2.05 in 52 mm Da - Cup Frontface Backing Diameter 2.99 in 74.93 mm Aa - Cage-Cone Backface Clearance 0.04 in 1 mm a - Effective Center Location3 -0.34 in -8.6 mm Basic Load Ratings C90 - Dynamic Radial Rating (One-Row, 90 million revolutions)4 6100 lbf 27100 N C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)5 41000 lbf 182000 N C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)6 10600 lbf 47200 N Ca90 - Dynamic Thrust Rating (90 million revolutions)7 3820 lbf 17000 N Factors K - Factor8 1.6 e - ISO Factor9 0.37 Y1 - ISO Factor10 1.85 Y2 - ISO Factor11 2.75 Cg - Geometry Factor12 0.0781