Tapered Roller Bearings - TNA (Tapered Double, non-adjustable) Imperial Timken NA9378 - 9320D
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Описание
NA9378 Specifications Cone Part Number NA9378 Cup Part Number 9320D Related Assembly Number(s) NA9378-90014 Design Unit Inch Dimensions d - Bore 3 in D - Cup Outer Diameter 7.0000 in T - Bearing Width across Cones 4.3125 in C - Double Cup Width 2.9375 in Abutment and Fillet Dimensions R - Cone Backface "To Clear" Radius1 0.14 in r - Cup Backface "To Clear" Radius2 0.090 in db - Cone Backface Backing Diameter 4.13 in Da - Cup Frontface Backing Diameter 6.48 in Basic Load Ratings C90 - Dynamic Radial Rating (90 million revolutions)3 21200 lbf C1 - Dynamic Radial Rating (1 million revolutions)4 142000 lbf Ca90- Dynamic Thrust Rating (90 million revolutions)5 27700 lbf C90(2)- Dynamic Radial Rating (Two-Row, 90 million revolutions)6 36800 lbf Factors K - Factor7 0.76 e - ISO Factor8 0.76 Y1 - ISO Factor9 0.88 Y2 - ISO Factor10 1.31