Series  121000 Cone Part Number  EE121140 Cup Part Number  121265 Design Units  Imperial Bearing Weight  518.5000 lb 235.2000 Kg Cage Type  Pin-Type D - Cup Outer Diameter  26.5000 in 673.100 mm d - Cone Bore  14.0000 in 355.600 mm B - Cone Width  6.0000 in 152.400 mm C - Cup Width  4.5000 in 114.300 mm T - Bearing Width  6.0000 in 152.400 mm Z - Number of Rollers Per Row  21 R - Cone Backface "To Clear" Radius1  0.630 in 16.000 mm r - Cup Backface "To Clear" Radius2  0.250 in 6.35 mm da - Cone Frontface Backing Diameter  17.01 in 395.99 mm db - Cone Backface Backing Diameter  16.73 in 424.94 mm Da - Cup Frontface Backing Diameter  24.15 in 611.90 mm Db - Cup Backface Backing Diameter  23.74 in 603.00 mm Ab - Cage-Cone Frontface Clearance  0.26 in 6.60 mm Aa - Cage-Cone Backface Clearance  0.86 in 21.84 mm a - Effective Center Location3  -0.96 in -24.40 mm C90 - Dynamic Radial Rating (90 million revolutions)1  215000 lbf 957000 N C1 - Dynamic Radial Rating (1 million revolutions)2  830000 lbf 3690000 N C0 - Static Radial Rating  1380000 lbf 6140000 N Ca90 - Dynamic Thrust Rating (90 million revolutions)3  138000 lbf 616000 N K - Factor1  1.55 e - ISO Factor2  0.38 Y - ISO Factor3  1.6 G1 - Heat Generation Factor (Roller-Raceway)  4540 G2 - Heat Generation Factor (Rib-Roller End)  230.6 Cg - Geometry Factor  0.223

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