cylindrical roller bearing / single-row / double-row / steel
Zhejiang Tianma Bearing Group Co.，Ltd.
high-speed, with cage, high-precision, long-life, high-temperature, large
transmission, for rolling mills, for motors, for pumps, for generators, for industry, for agricultural applications, for conveyors, for compressors, for machines, for automobiles, for heavy vehicles, spindle, for railway applications
Max.: 220 mm
Min.: 10 mm
Max.: 1,900 mm
Min.: 52 mm
Max.: 120 mm
Min.: 21 mm
TMB cylindrical roller bearings are available in many designs, series and sizes. The major design differences between the bearings presented in this section are in :
Number of roller rows (one, two or four)
Type of cage (with, without or special designs)
Bearings with a cage can accommodate heavy radial loads, rapid accelerations and high speeds.
Full complement bearings (without a cage) incorporate a maximum number of rollers and are therefore suitable for very heavy radial loads at moderate speeds.
High-capacity cylindrical roller bearings combine the high load carrying capacity of a full complement bearing with the high speed capability of a bearing with cage.
The configuration of the inner and outer ring flanges (position and number of guide flanges)
High load carrying capacity
Accommodate axial displacement
Except for bearings with flanges on both the inner and outer rings.
The open flange design, together with the roller end design and surface finish, promote lubricant film formation resulting in lower friction and higher axial load carrying capacity.
Long service life
The logarithmic roller profile reduces edge stresses at the roller/raceway contact and sensitivity to misalignment and shaft deflection.
Enhanced operational reliability
The surface finish on the contact surfaces of the rollers and raceways supports the formation of a hydrodynamic lubricant film.
Separable and interchangeable
The separable components of cylindrical roller bearings are interchangeable (fig. 4). This facilitates mounting and dismounting, as well as maintenance inspections.