Tapered Roller Bearings - TDI (Tapered Double Inner) Imperial Timken 688TD - 673

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 675 Cone Part Number 688TD Cup Part Number 673 Design Unit Inch Cage Material Stamped Steel Dimensions d - Bore 3.9453 in D - Cup Outer Diameter 6.6919 in B - Double Cone Width 3.7500 in C - Cup Width 1.1875 in T - Bearing Width across Cups 3.7500 in Abutment and Fillet Dimensions R - Cone Backface "To Clear" Radius1 0.03 in r - Cup Backface "To Clear" Radius2 0.130 in da - Cone Frontface Backing Diameter 4.45 in Db - Cup Backface Backing Diameter 5.91 in Ab - Cage-Cone Frontface Clearance 0.12 in Basic Load Ratings C90 - Dynamic Radial Rating (One-Row, 90 million revolutions)3 14600 lbf C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)4 97800 lbf C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)5 25400 lbf Ca90- Dynamic Thrust Rating (90 million revolutions)6 11700 lbf Factors K - Factor7 1.24 e - ISO Factor8 0.47 Y1 - ISO Factor9 1.43 Y2 - ISO Factor10 2.14 Cg - Geometry Factor11 0.106 Spacer Note Spacer shows standard nominal .01 radii, actual bearing may vary