32904 Tapered Roller Bearing
The 32904 bearing is a tapered roller bearing with an inner diameter of 20 mm , an outer diameter of 37 mm, a width of 12 mm. It typically uses p0 p4 p5 p6 grade precision tolerances and open type, together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.
Tapered Roller Bearings
The inner and outer ring raceways and rollers of this type of bearing are made with a taper so that the planes of the surfaces of the raceways and roller axis meet at a point. The rollers are guided by the cone (inner ring) back-face rib.
A single-row Tapered roller bearing can support a combined radial and axial load. If either a radial load or bi-directional axial load is to be carried, a pair of bearings must be used in a "ff" "bktbk" ace-to- ace or ac -0- ac position. Tapered roller bearings are separable into the components: outer ring, inner ring and roller assembly.
The non- separable inner ring and roller assembly is called the "cone”, and the outer ring is called the "cup" .Internal clearance is established during mounting by the axial positioning of the cone relative to the cup.
This bearing type can be used in a preload situation to obtain higher rigidity and better running accuracy of the shaft. Double-row and four-row Tapered roller bearings are designed to carry radial and bi-directional axial loads.
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