Tapered Roller Bearings - TDO (Tapered Double Outer) Imperial Timken 8578 - 8522D

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 8500 Cone Part Number 8578 Cup Part Number 8522D Design Unit Inch Cage Material Stamped Steel Dimensions d - Bore 9 1/2 in D - Cup Outer Diameter 12.9380 in B - Cone Width 2.0625 in C - Double Cup Width 3.25 in T - Bearing Width across Cones 4.5000 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 10.39 in Da - Cup Frontface Backing Diameter 12.40 in Aa - Cage-Cone Backface Clearance 0.24 in a - Effective Center Location3 0.3 in Basic Load Ratings C90 - Dynamic Radial Rating (One-Row, 90 million revolutions)4 30700 lbf C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)5 206000 lbf C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)6 53500 lbf Ca90- Dynamic Thrust Rating (90 million revolutions)7 21400 lbf Factors K - Factor8 1.44 e - ISO Factor9 0.41 Y1 - ISO Factor10 1.66 Y2 - ISO Factor11 2.47 Cg - Geometry Factor12 0.140