Series 385 Cone Part Number 386A Cup Part Number 382A Design Unit Inch Cage Material Stamped Steel Dimensions d - Bore 1 7/8 in 47.625 mm D - Cup Outer Diameter 3.8125 in 96.838 mm B - Cone Width 0.8640 in 21.946 mm C - Cup Width 0.6250 in 15.875 mm T - Bearing Width 0.8268 in 21.001 mm Abutment and Fillet Dimensions R - Cone Backface "To Clear" Radius1 0.03 in 0.8 mm r - Cup Backface "To Clear" Radius2 0.03 in 0.76 mm da - Cone Frontface Backing Diameter 2.17 in 55 mm db - Cone Backface Backing Diameter 2.20 in 56.0 mm Da - Cup Frontface Backing Diameter 3.66 in 92.96 mm Db - Cup Backface Backing Diameter 3.50 in 88.90 mm Ab - Cage-Cone Frontface Clearance 0.11 in 2.8 mm Aa - Cage-Cone Backface Clearance 0.03 in 0.8 mm a - Effective Center Location3 -0.12 in -3 mm Basic Load Ratings C90 - Dynamic Radial Rating (90 million revolutions)4 6280 lbf 28000 N C1 - Dynamic Radial Rating (1 million revolutions)5 24200 lbf 108000 N C0 - Static Radial Rating 24100 lbf 107000 N Ca90 - Dynamic Thrust Rating (90 million revolutions)6 3810 lbf 16900 N Factors K - Factor7 1.65 e - ISO Factor8 0.35 Y - ISO Factor9 1.69 G1 - Heat Generation Factor (Roller-Raceway) 42 G2 - Heat Generation Factor (Rib-Roller End) 15.7 Cg - Geometry Factor10 0.0859