Tapered Roller Bearings - TDI (Tapered Double Inner) Imperial Timken HM256849D - HM256810

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 HM256800 Cone Part Number HM256849D Cup Part Number HM256810 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) HM256849D-90043 Dimensions d - Bore 11.8125 in D - Cup Outer Diameter 16.6250 in B - Double Cone Width 5.9375 in C - Cup Width 2.5 in T - Bearing Width across Cups 5.9375 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 12.68 in Db - Cup Backface Backing Diameter 15.51 in Ab - Cage-Cone Frontface Clearance 0.2 in Basic Load Ratings C90 - Dynamic Radial Rating (One-Row, 90 million revolutions)3 75600 lbf C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)4 508000 lbf C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)5 132000 lbf Ca90- Dynamic Thrust Rating (90 million revolutions)6 43600 lbf Factors K - Factor7 1.73 e - ISO Factor8 0.34 Y1 - ISO Factor9 2 Y2 - ISO Factor10 2.99 G1 - Heat Generation Factor (Roller-Raceway) 2550 G2 - Heat Generation Factor (Rib-Roller End) 282 Cg - Geometry Factor11 0.178 Spacer Note Spacer shows standard nominal .01 radii, actual bearing may vary