Roller Bearings

Tapered Roller Bearings

Single Row Tapered Roller Bearings

Single row tapered roller bearings are able to harness both radial and axial forces. The axial load capacity depends on the degree of the contact angle. The axial load capacity depends on the degree of the contact angle. These parts are able to control the axial load in one direction only and that is why they are assembled in pairs. The axial clearance or preload designated in these pairs of tapered roller bearings is to be adjusted during assembly. The amount of the axial clearance or preload is determined according to the following criteria: operating conditions; the size and type of the roller bearings; and the specific requirements of the mating arrangements rigidity.

Double Row Tapered Roller Bearings

Double row tapered are used in heavier duty applications, as well as in satisfying the needs of the automobile industry. These are manufactured with a specific axial clearance which is selected to suit the operating conditions in mind.

Four-Row Tapered Roller Bearings

Four-row tapered are suitable for accommodating great radial forces and are used for rolling mill arrangements.

Single Row Cylindrical Roller Bearings

The single row cylindrical are suited to control heavy radial loads operating under high rotational speed. The single row cylindrical roller bearings are separable. They are manufactured in several basic designs:

  • Axially firm (NUP, NH) - which can carry a certain axial load in both directions.
  • Axially loose (NU) - which allows the mutual displacement of the rings in both directions.
  • In the design (NJ, NUJ) - which carries the axial load in one direction.

Multi-Row Cylindrical Roller Bearings

Double row cylindrical are distinguished by great rigidity and are prevailingly used for spindle arrangements of machine-tools and similar equipment. For accommodating high radial forces, it is suitable to use special multi row cylindrical roller bearings, especially in applications with limited space - i.e.- for rolling mill roll arrangements and in the metallurgy and rubber industry, etc..

Crossed Taper Roller Bearings

Crossed taper bearings consist of one outer ring, a two-piece inner ring, tapered rollers and separators. The bearings can accommodate axial and radial loads as well as the tilting moment. Due to their special internal geometry, both frictional loss and heat generation are low. Typical applications include machining center tables, drilling and milling machines, as well as welding equipment and radar aerials (all of which are applications where very high rigidity and accuracy are required).

Double Row Spherical Roller Bearings

Double row spherical bearings can simultaneously accommodate heavy radial loads and axial loads in both directions. The spherical shape of the outer ring raceway enables mutual alignment in operation and secures uniform load distribution on the rolling elements. They are suitable for rolling mill roll arrangements, gearboxes, railway carriages, axle boxes, etc..

Thrust Ball Bearings

Single/Double Direction Thrust Ball Bearings

Single direction thrust ball bearings are designed for carrying axial forces acting in one direction. They cannot accommodate radial forces. To prevent undesirable slipping of the balls due to the centrifugal forces at high rotational speed, they must be loaded by a minimum axial force.

Double direction cylindrical thrust , double direction tapered thrust and thrust ball bearings are suitable for accommodating high axial forces (e.g. rolling mill arrangements),as well as in arrangements where high rigidity in the axial direction is required (e.g. vertical lathe tables).