Four Row Tapered Roller Bearings
The four row taper roller bearing is a most commom radial roll bearing.A bearing with such structure has a high bearing capacity and can bear the combined load which is mainly consisted by the radial load.Its radial loading capacity is 2.5-3.5 times that of a single-row bearings. It can bear bith very high radial and axial loads. Compared to a four-row cylindrical roller bearings, it has a relatively low speed due to the restriction of its structure.The four-row tapered roller bearing can bear axial loads in double direction, so it can be used as a bodorectional thrust bearing.Boundary dimensionsBasic load ratingsDesignationsMassLimiting speedsmmkNCurrentOriginalkgr/mindDTrminr1minCrCorGreaseOil1502101652...................X2207714055...........XXXXBoundary dimensionsBasic load ratingsDesignationsMassLimiting speedsmmkNCurrentOriginalkgr/mindDTrminr1minCrCorGreaseOilXXXXX.747..57..XX.57.X/500771/.57./500X///530771/.57./530X./53010777/.57./53030777///560X-441140180Boundary dimensionsBasic load ratingsDesignationsMassLimiting speedsmmkNCurrentOriginalkgr/mindDTrminr1minCrCorGreaseOil/56010779/./56010777///60010779///600X/600771/./600X./60010777//625777//63010779/.57././630771/.57./630X.57./630X./63010777/./650777/.57./660777//67010779/.57./.57./670X.57./670X./67010777/.57./710X./710771/./710X./71010777/.57././750X./750771/.57./750777/./750X./75010777/././780779/.57./.57././85010777/./95020771/./106020771/.BT4B BT4B BT4B BT4B BT4B BT4B BT4B
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