Where is cylindrical roller bearing used?

Cylindrical rollers and raceways are line contact bearings. Load capacity, mainly bear radial load. The friction between the rolling element and the rib of the ferrule is small, which is suitable for high-speed rotation. According to whether the ring has ribs, it can be divided into NU, NJ, NUP, N, NF and other single row cylindrical roller bearings, and NNU, NN and other double row cylindrical roller bearings. The bearing has a detachable inner ring and outer ring.

Cylindrical roller bearings with no ribs on the inner ring or outer ring, the inner ring and outer ring can move relative to the axial direction, so they can be used as free end bearings. A cylindrical roller bearing with double ribs on one side of the inner ring and outer ring, and a single rib on the other side of the ring, which can withstand a certain degree of axial load in one direction. Steel stamping cages are generally used, or copper alloy car-made solid cages. But there are also some polyamide shaped cages.

According to whether the ring has ribs, there are single row bearings such as NU, NJ, NUP, N, NF, and double row bearings of NNU and NN. The bearing has a detachable inner ring and outer ring. Cylindrical roller bearings with no ribs on the inner ring or outer ring, the inner ring and outer ring can move relative to the axial direction, so they can be used as free end bearings. Cylindrical roller bearings with double ribs on one side of the inner ring or outer ring and single ribs on the other side of the ring can withstand axial loads in one direction to a certain extent.

Cylindrical roller bearings are suitable for double-supported short shafts with good rigidity, shafts that cause axial displacement due to thermal elongation, and machine parts that need to be separated for installation and disassembly. Mainly used in large motors, machine tool spindles, axle boxes, diesel engine crankshafts, and gearboxes for automobiles and tractors.