Series  495 Cone Part Number  495A Cup Part Number  493DC Design Units  Imperial Bearing Weight  8.6202 lb 3.9101 Kg Cage Type  Stamped Steel D - Cup Outer Diameter  5.3750 in 136.525 mm d - Cone Bore  3.0000 in 76.200 mm B - Cone Width  1.1720 in 29.769 mm C - Double Cup Width  2.1250 in 53.975 mm T - Bearing Width across Cones  2.7500 in 69.850 mm Z - Number of Rollers Per Row  23 Ka - Locking Pin Diameter  0.687 in 17.4 mm Kb - Locking Pin Depth  0.218 in 5.5 mm R - Cone Backface "To Clear" Radius1  0.140 in 3.600 mm r - Cup Frontface "To Clear" Radius2  0.03 in 0.8 mm db - Cone Backface Backing Diameter  3.62 in 91.90 mm Da - Cup Frontface Backing Diameter  5.16 in 130.05 mm Aa - Cage-Cone Backface Clearance  0.10 in 2.50 mm C90 - Dynamic Radial Rating (One-Row, 90 million revolutions)1  9000 lbf 40000 N C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)2  60500 lbf 269000 N C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)3  15700 lbf 69700 N Ca90 - Dynamic Thrust Rating (90 million revolutions)4  6850 lbf 30500 N K - Factor1  1.31 e - ISO Factor2  0.97 Y1 - ISO Factor3  0.69 1.03 Y2 - ISO Factor4  1.03 G1 - Heat Generation Factor (Roller-Raceway)5  105 G2 - Heat Generation Factor (Rib-Roller End)  29.3 Cg - Geometry Factor6  0.125

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