Analysis of the structure and characteristics of cylindrical roller bearings

Cylindrical roller bearings are separate bearings, which are very convenient for installation and disassembly. Cylindrical roller bearings are divided into single row, double row and four rows.

Analysis of the structure and characteristics of cylindrical roller bearings

Cylindrical roller bearings can be divided into single-row, double-row and multi-row cylindrical roller bearings according to the number of rows of rolling elements used for bearing installation. Among them, single row cylindrical roller bearings with cages are the most widely used. In addition, there are single-row or double-row full complement rollers and other structures of cylindrical roller bearings.

Single-row cylindrical roller bearings are divided into N-type, NU-type, NJ-type, NF-type and NUP-type according to the ring flange. Cylindrical roller bearings have a large radial load capacity. Depending on the structure of the ring flange, they can also withstand certain unidirectional or bidirectional axial loads.

NN and NNU double row cylindrical roller bearings are compact in structure, strong in rigidity, large in carrying capacity, and small in deformation after being loaded, and are mostly used for supporting machine tool spindles. FC, FCD, FCDP four-row cylindrical roller bearings can withstand large radial loads and are mostly used in heavy machinery such as rolling mills.

Cylindrical roller bearings are mainly used in motors, machine tools, petroleum, rolling mill loading and unloading and handling machinery and various industrial machinery.

According to the presence or absence of ribs, there are NU, NJ, NUP, N, NF single-row bearings, and NNU, NN double-row bearings. Such imported bearings have a separable inner ring and outer ring structure.\

Cylindrical roller bearings with no ribs in the inner ring or outer ring can move relative to the axial direction of the inner ring and outer ring, 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 can withstand a certain degree of axial load in one direction.

Double row cylindrical roller bearings, with high rigidity against radial loads, are mainly used for machine tool spindles.

Generally use steel stamping cage or copper alloy cage. But some also use polyamide shaped cages.