Inner Ring (IR) Timken IR-769248

Описание

Ideal choice where the shaft is not practical to use as inner raceway. Designed to meet established inch tolerances. Maximum shaft fillet radius cannot exceed inner-ring bore chamfer as shown. Optional centralized lubrication groove (bore) or through hole available – specify when ordering. Designed to be axially clamped against shoulder for loose transition fit on shaft. After mounting, for tight transition fit (keeping inner ring from rotating relative to shaft), inner-ring O.D. must not exceed raceway diameter on matching bearing. After mounting, if O.D. of inner ring exceeds the required raceway diameter for matching bearing, ring should be ground to proper diameter while mounted on shaft. Unmarked end of inner ring to be assembled against the shaft shoulder to ensure clearing the maximum allowable shaft fillet as indicated in tables shown. Specifications Shaft Diameter 4.750 in Max. Loose Transition Fit S 4.7494 in Min. Loose Transition Fit S 4.7485 in Max. Interference Fit 4.7513 in Min. Interference Fit 4.7506 in Dimensions Dimension D 4.750 in Dimension F 5.7500 in Dimension B 3 in Chamfer rsmin 0.12 in Sub Assembly Part Numbers Used with Bearing Designation HJ-9211648