The roller bearing with two raceways is between the inner ring with two raceways and the outer ring with spherical surface, and is equipped with the drum roller bearing. The curvature center of outer race surface is consistent with the bearing center, so it has the same function as the automatic centering ball bearing. When the shaft and shell are flexed, it can be adjusted automatically without increasing bearing burden. The roller bearing can bear radial load and axial load in two directions. The radial load capacity is large, which is suitable for heavy load and impact load.

The inner diameter of inner ring is the bearing of taper hole, which can be installed directly. Or install the fixing sleeve and the disassembly cylinder on the cylinder shaft. The cage is made of sheet metal stamping holder, polyamide forming cage and copper alloy car cage. The roller bearing can bear large radial load and axial load. The raceway of outer ring of this kind of bearing is spherical, so it has the performance of adjusting center. When the shaft is bent or tilted, the center line of inner ring and the center line of outer ring are inclined less than 1 °～ two point five ° When, the bearing can still work.

The inner hole of the roller bearing has two kinds of cylindrical and conical. The taper of the cone inner hole is 1:12 or 1:30. In order to enhance the lubrication performance of the bearings, the annular oil groove and three evenly distributed oil holes are machined on the outer ring of the bearing.

The bearing system of the adjustable roller bearing is suitable for bearing heavy load and impact load, and is widely used in metallurgy, rolling mill, mining, oil, paper making, cement, sugar pressing and other industries, and is an indispensable bearing type in our machinery industry.