Four row cylindrical roller bearings

Four row cylindrical roller bearings have conical inner and outer ring raceways with tapered rollers arranged between them.The projection lines of all the conical surfaces meet at the same point of the bearing axis.This design makes tapered roller bearings particularly suitable for bearing composite (radial and axial) loads.The axial load capacity of the bearing is largely determined by the contact Angle α.The larger the alpha Angle, the higher the axial load capacity.
Four row cylindrical roller bearings with small friction between the rolling body and the ring edge, suitable for high-speed rotation.

According to the ring with or without flange, four row cylindrical roller bearings can be divided into NU, NJ, NUP, N, NF and other single row bearings, and NNU, NN and other double row bearings.
The four row cylindrical roller bearings structure with separable inner and outer rings.The cylindrical roller bearings with inner or outer rings without flanges can be used as free-end bearings because the inner and outer rings can move relative to each other in the axial direction.

One side of the inner ring and outer ring is provided with double flaps, and the ring on the other side is provided with a cylindrical roller bearing with a single flaps, which can withstand a certain degree of axial load in one direction.Generally, steel plate stamping cages or copper alloy car cages are used.
Four row cylindrical roller bearings are usually of the disjointed type, that is, a tapered inner ring assembly consisting of an inner ring of the roller and cage assembly may be mounted separately from the taper outer ring (outer ring).
Four row cylindrical roller bearings are widely used in automobile, rolling mill, mining, metallurgy, plastic machinery and other industries.
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