Tapered Roller Bearings - TDI (Tapered Double Inner) Imperial Timken LM278848D - LM278810

Описание

TDI bearings have a one-piece double inner race and two single outer races and are typically supplied complete with an outer race spacer as a pre-set assembly. The bearing can be used at fixed positions on rotation shaft applications. For rotating housing application it can be used to float on the stationary shaft. Specifications Series LM278800 Cone Part Number LM278848D Cup Part Number LM278810 Design Unit Inch Cage Material Pin-Type Note This part has a non-standard shoulder design. Please email customer CAD for shoulder details to ensure the proper design of mating components. Related Assembly Number(s) LM278848D-902A2 Dimensions d - Bore 23.0625 in D - Cup Outer Diameter 30.3750 in B - Double Cone Width 9.0625 in C - Cup Width 3.8125 in T - Bearing Width across Cups 9.0624 in Abutment and Fillet Dimensions R - Cone Backface "To Clear" Radius1 0.25 in r - Cup Backface "To Clear" Radius2 0.250 in da - Cone Frontface Backing Diameter 24.25 in Db - Cup Backface Backing Diameter 28.58 in Ab - Cage-Cone Frontface Clearance 0.31 in Basic Load Ratings C90 - Dynamic Radial Rating (One-Row, 90 million revolutions)3 192000 lbf C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)4 1290000 lbf C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)5 334000 lbf Ca90- Dynamic Thrust Rating (90 million revolutions)6 109000 lbf Factors K - Factor7 1.76 e - ISO Factor8 0.33 Y1 - ISO Factor9 2.03 Y2 - ISO Factor10 3.02 G1 - Heat Generation Factor (Roller-Raceway) 11600 G2 - Heat Generation Factor (Rib-Roller End) 784 Cg - Geometry Factor11 0.291 Spacer Note Spacer shows standard nominal .01 radii, actual bearing may vary