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Four-row tapered roller bearings    

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Four-row tapered roller bearings
Tapered roller bearings
Tapered roller bearings can be separated from the inner ring and roller, with the composition of the components of the cage and the outer ring can be installed separately. Roller and raceway contact the Department to amend the contact line can reduce the stress concentration. Tapered roller bearing can withstand large radial loads and axial loads. As the tapered roller bearing axial load can only pass one way, therefore, to pass the opposite direction of axial load on the need to install another symmetry with tapered roller bearings.
Tapered Roller Bearings is the largest in the dosage of single row tapered roller bearings. In the car's front wheels in recent years to spend the small size of the double row tapered roller bearings. Four-row tapered roller bearings used in large-scale cold, hot rolling mill and other heavy machines.
Single row tapered roller bearings have a outer ring, the inner ring, and a tapered roller cover from the box-type cage into an inner component. The outer ring and inner ring component can be separated, tapered roller bearings according to ISO standard dimensions, any standard model of a tapered roller bearing outer ring or inner ring and the same model components should be able to outer or inner component and implementation of international exchange. Outer ring of the same model except that the Department of dimensions, tolerances required to comply with ISO492 (GB307) provides, the inner components of the cone angle and cone diameter components must also meet the exchange's requirements.
Typically, single row tapered roller bearing outer ring raceway of the cone angle 10 ° ~ 19 ° before, can also withstand the radial bearing loads and loads to the joint effect. Cone angle is, the ability to withstand the larger axial load. Large cone angle of the bearing, post code plus B, cone angle 25 ° ~ 29 ° between, it can bear large axial load. In addition, the single row tapered roller bearings can be adjusted during installation clearance size.
Double row tapered roller bearing outer ring (or inner) is a whole. Two inner (or outer) face similar small gutter ring, ring clearance is separated by the thickness to adjust, and can also be used to adjust the thickness separated circle double row tapered roller bearings and preloaded.
Tapered roller bearings with radial oriented mainly to bear radial and axial joint load. Bearing load capacity depends on the angle of the outer ring raceway, the greater the angle the greater the carrying capacity. This kind of bearing is a separate bearings, rolling bearings according to the number of rows into single row, double row and four row tapered roller bearings. Single row tapered roller bearing clearance adjustment required to the user during installation; double row and four row tapered roller bearing clearance from the factory has been given based on user requirements, users do not need to adjust.
Tapered roller bearings have tapered inner and outer ring raceways, tapered roller arranged between the two. The surface of the projection lines of all cone bearing axis in the same point together. This design makes tapered roller bearings particularly suitable for bearing complex (radial and axial) loads. Most of the axial load bearing capacity is determined by the contact angle α; α angle increases, the higher the axial load capacity. Angle size of the computational coefficient e to represent; e greater the contact angle the greater the bearing axial load greater applicability.
Tapered roller bearing is usually separated type, that is, with roller and cage assembly of the inner components can be composed of the inner cone and cone outer ring (outer ring) installed separately.
Tapered roller bearings are widely used in automotive, mill, mine, metallurgy, plastics and machinery. 
 
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