Tapered Roller Bearings - TNA (Tapered Double, non-adjustable) Imperial Timken NA72212 - 72488D
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Описание
NA72212 Specifications Cone Part Number NA72212 Cup Part Number 72488D Design Unit Inch Dimensions d - Bore 2.1250 in D - Cup Outer Diameter 4-7/8 in T - Bearing Width across Cones 3.0625 in C - Double Cup Width 2.1875 in Abutment and Fillet Dimensions R - Cone Backface "To Clear" Radius1 0.09 in r - Cup Backface "To Clear" Radius2 0.06 in db - Cone Backface Backing Diameter 2.91 in Da - Cup Frontface Backing Diameter 4.56 in Basic Load Ratings C90 - Dynamic Radial Rating (90 million revolutions)3 9620 lbf C1 - Dynamic Radial Rating (1 million revolutions)4 64600 lbf Ca90- Dynamic Thrust Rating (90 million revolutions)5 12100 lbf C90(2)- Dynamic Radial Rating (Two-Row, 90 million revolutions)6 16800 lbf Factors K - Factor7 0.79 e - ISO Factor8 0.74 Y1 - ISO Factor9 0.92 Y2 - ISO Factor10 1.36