Four Row Tapered Roller Bearings

Four-row tapered roller bearings can accommodate combined (radial and axial) loads at low to moderate speeds. They are used almost exclusively in work roll applications such as rolling mills. You can get four-row tapered roller bearings in the TQO and TQI designs.
Four Row Tapered Roller Bearings
Four Row Tapered Roller Bearings

We manufactures four-row tapered roller bearings in the TQO and TQI designs in the following variants.

TQO design bearings (face-to-face arrangement)

TQO design bearings have two pairs of tapered roller and cage assemblies. The two rows of rollers of each pair are arranged face-to-face. Because TQO is the most widely used four-row tapered roller bearing design, We manufactures this design in many variants.

  • open or sealed.
  • with cylindrical or tapered bore.
  • with or without inner ring extension on both sides.
  • with or without helical groove in the bore.

TQI design bearings (back-to-back arrangement)

TQI design bearings have two pairs of tapered roller and cage assemblies. The two rows of rollers of each pair are arranged back-to-back. These bearings provide relatively stiff bearing arrangements, which can also accommodate tilting moments. In those applications the bearings are generally mounted with an interference fit on the roll neck by applying a bearing design with a tapered bore. TQI design bearings are also used for vertical rolls of universal mills. In this case a bearing with a cylindrical bore is required because the inner rings have a loose fit on their seat and the outer rings are mounted with an interference fit in the chocks.

  • with cylindrical or tapered bore.
  • with or without inner ring extension on one side.

Features of four-row tapered roller bearings

  • Well-allocated loads on the four-row rollers.
  • Using high hardness bearing steels, and thus ensure a better wear resistance and long work life.
  • High radial and axial load capacity in two directions.
  • Separable, faster and convenient for mounting, dismounting, inspection, and maintenance .

Appilications of four-row tapered roller bearings

Four-row tapered roller bearings are used successfully worldwide for rolling mill bearing arrangements where rolling speeds are slow to moderate. They are mainly used in the working roll necks of hot or cold rolling mills, and roll neck of cogging mills. They usually clearance fit with roll necks to being mounted and dismounted conveniently.

Related Bearings

Widi is professional bearing manufacturer in China. You can get all this types of bearing from our company.
Four Row Tapered Roller Bearings

Four Row Tapered Roller Bearings

Four-row tapered roller bearings can accommodate combined (radial and axial) loads at low to moderate speeds. They are used in rolling mills.
Double Row Tapered Roller Bearings

Double Row Tapered Roller Bearings

We manufactures double row tapered roller bearings in the TDO and TDI designs, in many variants and with different features.
Single Row Tapered Roller Bearings

Single Row Tapered Roller Bearings

The single row tapered roller bearings are designed to accommodate combined loads, i.e. simultaneously acting radial and axial loads.