Series 775 Cone Part Number 779 Cup Part Number 774D Design Unit Inch Cage Material Stamped Steel Dimensions d - Bore 3.8750 in 98.425 mm D - Cup Outer Diameter 7.1250 in 180.975 mm B - Cone Width 1.8900 in 48.006 mm C - Double Cup Width 3.3750 in 85.725 mm T - Bearing Width across Cones 4.1250 in 104.775 mm Abutment and Fillet Dimensions R - Cone Backface "To Clear" Radius1 0.14 in 3.600 mm r - Cup Backface "To Clear" Radius2 0.06 in 1.5 mm db - Cone Backface Backing Diameter 4.57 in 116 mm Da - Cup Frontface Backing Diameter 6.65 in 168.90 mm Aa - Cage-Cone Backface Clearance 0.13 in 3.3 mm a - Effective Center Location3 -0.32 in -8.1 mm Basic Load Ratings C90 - Dynamic Radial Rating (One-Row, 90 million revolutions)4 20200 lbf 89700 N C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)5 135000 lbf 603000 N C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)6 35100 lbf 156000 N Ca90 - Dynamic Thrust Rating (90 million revolutions)7 13300 lbf 59200 N Factors K - Factor8 1.51 e - ISO Factor9 0.39 Y1 - ISO Factor10 1.75 Y2 - ISO Factor11 2.61 Cg - Geometry Factor12 0.107