Series  34000 Cone Part Number  34274 Cup Part Number  34478D Design Units  Imperial Bearing Weight  4.7886 lb 2.1721 Kg Cage Type  Stamped Steel D - Cup Outer Diameter  4.7812 in 121.442 mm d - Cone Bore  2.7540 in 69.952 mm B - Cone Width  0.9060 in 23.012 mm C - Double Cup Width  1.5000 in 38.100 mm T - Bearing Width across Cones  2.0625 in 52.388 mm Z - Number of Rollers Per Row  24 Ka - Locking Pin Diameter  N/A Kb - Locking Pin Depth  N/A R - Cone Backface "To Clear" Radius1  0.080 in 2.000 mm r - Cup Frontface "To Clear" Radius2  0.03 in 0.8 mm db - Cone Backface Backing Diameter  3.19 in 81.00 mm Da - Cup Frontface Backing Diameter  4.60 in 116.84 mm Aa - Cage-Cone Backface Clearance  0.10 in 2.50 mm C90 - Dynamic Radial Rating (One-Row, 90 million revolutions)1  5960 lbf 26500 N C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)2  40000 lbf 178000 N C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)3  10400 lbf 46100 N Ca90 - Dynamic Thrust Rating (90 million revolutions)4  4600 lbf 20500 N K - Factor1  1.3 e - ISO Factor2  0.99 Y1 - ISO Factor3  0.68 1.01 Y2 - ISO Factor4  1.01 G1 - Heat Generation Factor (Roller-Raceway)5  69.3 G2 - Heat Generation Factor (Rib-Roller End)  27 Cg - Geometry Factor6  0.109

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