Series  39500 Cone Part Number  39578 Cup Part Number  39520 Design Units  Imperial Bearing Weight  3.2000 lb 1.4000 Kg Cage Type  Stamped Steel D - Cup Outer Diameter  4.4375 in 112.713 mm d - Cone Bore  2.1250 in 53.975 mm B - Cone Width  1.1875 in 30.163 mm C - Cup Width  0.9375 in 23.813 mm T - Bearing Width  1.1875 in 30.163 mm Z - Number of Rollers Per Row  21 R - Cone Backface "To Clear" Radius1  0.140 in 3.560 mm r - Cup Backface "To Clear" Radius2  0.130 in 3.30 mm da - Cone Frontface Backing Diameter  2.52 in 64.01 mm db - Cone Backface Backing Diameter  2.76 in 70.10 mm Da - Cup Frontface Backing Diameter  4.25 in 107.95 mm Db - Cup Backface Backing Diameter  3.98 in 101.09 mm Ab - Cage-Cone Frontface Clearance  0.10 in 2.54 mm Aa - Cage-Cone Backface Clearance  0.06 in 1.52 mm a - Effective Center Location3  -0.26 in -6.60 mm C90 - Dynamic Radial Rating (90 million revolutions)1  9730 lbf 43300 N C1 - Dynamic Radial Rating (1 million revolutions)2  37500 lbf 167000 N C0 - Static Radial Rating  50300 lbf 224000 N Ca90 - Dynamic Thrust Rating (90 million revolutions)3  5650 lbf 25100 N K - Factor1  1.72 e - ISO Factor2  0.34 Y - ISO Factor3  1.77 G1 - Heat Generation Factor (Roller-Raceway)  84.3 G2 - Heat Generation Factor (Rib-Roller End)  23.7 Cg - Geometry Factor  0.107

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