Double Row Cylindrical Roller Bearing

Based on the different bore types, ZWA’s double-row cylindrical roller bearings are divided into two types, one is with cylindrical bore and the other is with a tapered bore. Based on a different arrangement of flanges on the inner ring and outer ring, and also the cage design,  ZWA’s double-row cylindrical roller bearings are divided into NNU, NN, and NNUP types. For the NNU type, there are ribs on both sides of the outer ring but no ribs on the inner ring. For NN type, there are ribs on both sides of the inner ring but no ribs on the outer ring. For the NNUP type, there are ribs on both sides of the outer ring and ribs on one inner ring. While mounting the NNUP types, do make the marked ribs outward. In general, NU and NN types are used on the free end and NUP types on the fixed end. 

ZWA offers double row cylindrical roller bearings both with machined brass and steel cages. With continuous efforts in improving the quality,  as one of the leading China cylindrical roller bearing manufacturers and a double row cylindrical roller bearing factory, ZWA has helped customers realize the following goals by providing two-row cylindrical roller bearings:

• Reduce the cost 

• Increase productivity 

• Prolong the equipment service life 

• Improve the sustainability  

The features of two-row cylindrical roller bearings are as follows

• Compact internal structure 

• Higher stiffness

• Higher load capacity ability 

• Small deformation after high load 

• Lower friction 

• Longer service life 

• Improve the operational reliability 

• Separable and interchangeable 

• High-speed ability 

• The applications of two-row cylindrical roller bearings are as follows:

• The spindle of tooling machine, rolling mills, gearboxes, grinding machines and so on.