Tapered Roller Bearings - TDO (Tapered Double Outer) Imperial Timken EE420812X - 421455D

Описание

The configuration of the TDO provides a wide effective bearing spread, making it ideal for applications in which overturning moments are a significant load component. TDO bearings can be used in fixed positions or allowed to float in the housing bore. Specifications Series 420000 Cone Part Number EE420812X Cup Part Number 421455D Design Unit Inch Cage Material Stamped Steel Dimensions d - Bore 8.1250 in D - Cup Outer Diameter 14.5000 in B - Cone Width 3.4999 in C - Double Cup Width 5.2500 in T - Bearing Width across Cones 7.4999 in Abutment and Fillet Dimensions R - Cone Backface "To Clear" Radius1 0.25 in r - Cup Backface "To Clear" Radius2 0.06 in db - Cone Backface Backing Diameter 9.41 in Da - Cup Frontface Backing Diameter 13.21 in Aa - Cage-Cone Backface Clearance 0.72 in a - Effective Center Location3 -0.61 in Basic Load Ratings C90 - Dynamic Radial Rating (One-Row, 90 million revolutions)4 64300 lbf C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)5 432000 lbf C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)6 112000 lbf Ca90- Dynamic Thrust Rating (90 million revolutions)7 44200 lbf Factors K - Factor8 1.45 e - ISO Factor9 0.4 Y1 - ISO Factor10 1.68 Y2 - ISO Factor11 2.5 Cg - Geometry Factor12 0.145