Tapered Roller Bearings - TNA (Tapered Double, non-adjustable) Imperial Timken NA691 - 672D
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Описание
NA691 Specifications Cone Part Number NA691 Cup Part Number 672D Related Assembly Number(s) NA691-90079 Design Unit Inch Dimensions d - Bore 4 in D - Cup Outer Diameter 6.6250 in T - Bearing Width across Cones 3.625 in C - Double Cup Width 2.75 in Abutment and Fillet Dimensions R - Cone Backface "To Clear" Radius1 0.14 in r - Cup Backface "To Clear" Radius2 0.030 in db - Cone Backface Backing Diameter 4.65 in Da - Cup Frontface Backing Diameter 6.34 in Basic Load Ratings C90 - Dynamic Radial Rating (90 million revolutions)3 15400 lbf C1 - Dynamic Radial Rating (1 million revolutions)4 104000 lbf Ca90- Dynamic Thrust Rating (90 million revolutions)5 12400 lbf C90(2)- Dynamic Radial Rating (Two-Row, 90 million revolutions)6 26900 lbf Factors K - Factor7 1.24 e - ISO Factor8 0.47 Y1 - ISO Factor9 1.43 Y2 - ISO Factor10 2.14