Tapered Roller Bearings - TDO (Tapered Double Outer) Imperial Timken LM742748 - LM742714D

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 LM742700 Cone Part Number LM742748 Cup Part Number LM742714D Design Unit Inch Cage Material Stamped Steel Dimensions d - Bore 8 1/2 in D - Cup Outer Diameter 11.3750 in B - Cone Width 1.8125 in C - Double Cup Width 3 in T - Bearing Width across Cones 3.8749 in Abutment and Fillet Dimensions R - Cone Backface "To Clear" Radius1 0.14 in r - Cup Backface "To Clear" Radius2 0.030 in db - Cone Backface Backing Diameter 9.17 in Da - Cup Frontface Backing Diameter 11.06 in Aa - Cage-Cone Backface Clearance 0.14 in a - Effective Center Location3 0.56 in Basic Load Ratings C90 - Dynamic Radial Rating (One-Row, 90 million revolutions)4 22100 lbf C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)5 148000 lbf C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)6 38400 lbf Ca90- Dynamic Thrust Rating (90 million revolutions)7 18200 lbf Factors K - Factor8 1.21 e - ISO Factor9 0.48 Y1 - ISO Factor10 1.4 Y2 - ISO Factor11 2.09 Cg - Geometry Factor12 0.135