Double Row Tapered Roller Bearing NA74525/74851CD
Double Row Tapered Roller Bearing NA74525/74851CD
Inner Ring: 5.250in/133.350mm
Outer Ring: 8.500in/215.900mm
Width of Outer Ring: 4.1875in/106.362mm
Width of Inner Ring: 3.1875in/80.962mm
Chamfer of Inner Ring: 0.14in/3.5mm
Chamfer of Outer Ring: 0.06in/1.5mm
Basic Dynamic Load Rating: 495KN
Basic Static Load Rating: 985KN
Gross Weight: 13.5kg
Double row tapered roller bearings can support the combined load which is mainly consisted of radial load. It can restrict the axial displacement of the shaft or housing in the two directions and thus can be used as a bidirectional locating bearing. Double row tapered roller bearings can carry heavy radial and axial loads and are stiff, the axial load carrying capacity of tapered roller bearings increases with increasing contact angle, and are easy to be mounted and dismounted. Double row tapered roller bearings can be used in a preload situation to obtain higher rigidity and better running accuracy of the shaft. CJB provides both back-to-back arrangement (using one double cup and two single-row cones) and face-to-face arrangement (using two single-row cups and one double cone ). Their main use is in gearboxes, hoisting equipment, rolling mills and machines used in the mining industry.
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