Tapered Roller Bearings - TDO (Tapered Double Outer) Imperial Timken 389 - 384XD

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 385 Cone Part Number 389 Cup Part Number 384XD Design Unit Inch Cage Material Stamped Steel Dimensions d - Bore 2.1880 in D - Cup Outer Diameter 3.937 in B - Cone Width 0.8640 in C - Double Cup Width 3.7640 in T - Bearing Width across Cones 4.1389 in Abutment and Fillet Dimensions R - Cone Backface "To Clear" Radius1 0.09 in r - Cup Backface "To Clear" Radius2 0.030 in db - Cone Backface Backing Diameter 2.56 in Da - Cup Frontface Backing Diameter 3.74 in Aa - Cage-Cone Backface Clearance 0.03 in a - Effective Center Location3 -0.12 in Basic Load Ratings C90 - Dynamic Radial Rating (One-Row, 90 million revolutions)4 6280 lbf C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)5 42200 lbf C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)6 10900 lbf Ca90- Dynamic Thrust Rating (90 million revolutions)7 3810 lbf Factors K - Factor8 1.65 e - ISO Factor9 0.35 Y1 - ISO Factor10 1.91 Y2 - ISO Factor11 2.84 Cg - Geometry Factor12 0.0859