Tapered Roller Bearings - TNA (Tapered Double, non-adjustable) Imperial Timken NA643SW - 632D
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Описание
NA643SW Specifications Cone Part Number NA643SW Cup Part Number 632D Design Unit Inch Dimensions d - Bore 2 3/4 in D - Cup Outer Diameter 5.3750 in T - Bearing Width across Cones 3.75 in C - Double Cup Width 3 in Abutment and Fillet Dimensions R - Cone Backface "To Clear" Radius1 0.14 in r - Cup Backface "To Clear" Radius2 0.06 in db - Cone Backface Backing Diameter 3.39 in Da - Cup Frontface Backing Diameter 4.96 in Basic Load Ratings C90 - Dynamic Radial Rating (90 million revolutions)3 13600 lbf C1 - Dynamic Radial Rating (1 million revolutions)4 91200 lbf Ca90- Dynamic Thrust Rating (90 million revolutions)5 8420 lbf C90(2)- Dynamic Radial Rating (Two-Row, 90 million revolutions)6 23600 lbf Factors K - Factor7 1.61 e - ISO Factor8 0.36 Y1 - ISO Factor9 1.86 Y2 - ISO Factor10 2.78