cylindrical roller bearing / single-row / double-row / steel
CRB Zhejiang Tianma Bearing Group Co.,Ltd.



  • Rolling element:

    cylindrical roller

  • Configuration:

    single-row, double-row

  • Material:


  • Other characteristics:

    high-speed, with cage, high-precision, long-life, high-temperature, large

  • Applications:

    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

  • Inside diameter:

    Max.: 220 mm

    Min.: 10 mm

  • Outside diameter:

    Max.: 1,900 mm

    Min.: 52 mm

  • Width:

    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)
Bearing features
High load carrying capacity
High stiffness
Accommodate axial displacement
Except for bearings with flanges on both the inner and outer rings.
Low friction
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.