Series A4000 Cone Part Number A4059 Cup Part Number A4138 Design Unit Inch Cage Material Stamped Steel Dimensions d - Bore 0.5901 in 14.989 mm D - Cup Outer Diameter 1.3775 in 34.989 mm B - Cone Width 0.4326 in 10.988 mm C - Cup Width 0.3437 in 8.730 mm T - Bearing Width 0.4330 in 10.998 mm Abutment and Fillet Dimensions R - Cone Backface "To Clear" Radius1 0.03 in 0.8 mm r - Cup Backface "To Clear" Radius2 0.05 in 1.27 mm da - Cone Frontface Backing Diameter 0.75 in 19 mm db - Cone Backface Backing Diameter 0.77 in 19.5 mm Da - Cup Frontface Backing Diameter 1.28 in 32.51 mm Db - Cup Backface Backing Diameter 1.14 in 28.96 mm Ab - Cage-Cone Frontface Clearance 0.07 in 1.8 mm Aa - Cage-Cone Backface Clearance 0 in 0 mm a - Effective Center Location3 -0.1 in -2.5 mm Basic Load Ratings C90 - Dynamic Radial Rating (90 million revolutions)4 767 lbf 3410 N C1 - Dynamic Radial Rating (1 million revolutions)5 2960 lbf 13200 N C0 - Static Radial Rating 2580 lbf 11500 N Ca90 - Dynamic Thrust Rating (90 million revolutions)6 594 lbf 2640 N Factors K - Factor7 1.29 e - ISO Factor8 0.45 Y - ISO Factor9 1.32 G1 - Heat Generation Factor (Roller-Raceway) 2.3 G2 - Heat Generation Factor (Rib-Roller End) 4.12 Cg - Geometry Factor10 0.0355