Tapered Roller Bearings - TDI (Tapered Double Inner) Imperial Timken 52387D - 52639

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 52000 Cone Part Number 52387D Cup Part Number 52639 Design Unit Inch Cage Material Stamped Steel Dimensions d - Bore 3.8750 in D - Cup Outer Diameter 6-3/8 in B - Double Cone Width 3.1250 in C - Cup Width 1.5625 in T - Bearing Width across Cups 3.5311 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 4.29 in Db - Cup Backface Backing Diameter 5.67 in Ab - Cage-Cone Frontface Clearance 0.12 in Basic Load Ratings C90 - Dynamic Radial Rating (One-Row, 90 million revolutions)3 13000 lbf C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)4 87500 lbf C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)5 22700 lbf Ca90- Dynamic Thrust Rating (90 million revolutions)6 10600 lbf Factors K - Factor7 1.23 e - ISO Factor8 0.47 Y1 - ISO Factor9 1.42 Y2 - ISO Factor10 2.12 Cg - Geometry Factor11 0.152 Spacer Note Spacer shows standard nominal .01 radii, actual bearing may vary