Tapered Roller Bearings - TDI (Tapered Double Inner) Imperial Timken EE420750D - 421450

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 420000 Cone Part Number EE420750D Cup Part Number 421450 Design Unit Inch Cage Material Stamped Steel Related Assembly Number(s) EE420750D-90015 Dimensions d - Bore 7.5 in D - Cup Outer Diameter 14.5000 in B - Double Cone Width 6.0000 in C - Cup Width 2.5 in T - Bearing Width across Cups 6.2499 in Abutment and Fillet Dimensions R - Cone Backface "To Clear" Radius1 0.13 in r - Cup Backface "To Clear" Radius2 0.130 in da - Cone Frontface Backing Diameter 8.7 in Db - Cup Backface Backing Diameter 13.03 in Ab - Cage-Cone Frontface Clearance 0.14 in Basic Load Ratings C90 - Dynamic Radial Rating (One-Row, 90 million revolutions)3 64300 lbf C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)4 432000 lbf C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)5 112000 lbf Ca90- Dynamic Thrust Rating (90 million revolutions)6 44200 lbf Factors K - Factor7 1.45 e - ISO Factor8 0.4 Y1 - ISO Factor9 1.68 Y2 - ISO Factor10 2.5 G1 - Heat Generation Factor (Roller-Raceway) 1150 G2 - Heat Generation Factor (Rib-Roller End) 128 Cg - Geometry Factor11 0.145 Spacer Note Spacer shows standard nominal .01 radii, actual bearing may vary