Kugellager und Mehr - Laeppche Unternehmensgruppe

ROLLER BEARINGS – A WIDE VARIETY OF FORMS
FOR MANY DIFFERENT APPLCIATION AREAS

 

RollenlagerIn contrast to the ball bearing, the roller bearing has a significantly higher load bearing capacity. While the load is carried on just a small surface with ball bearings, nearly the entire length of the roller is used to transfer forces. Depending on the design version, the bearings absorb either axial or radial forces. In general, they are less well suited for high speed applications than ball bearings.

Roller bearings are available in a wide variety of forms. The rollers are made of steel. The preferred materials for the cages are:

  • Steel
  • Plastic
  • Brass


Cylindrical roller bearings have solid inner and outer rings and shoulder guided cylinder rollers. Thanks to the highest possible number of rolling elements, they have a particularly high bearing capacity in the radial direction, are very rigid and well suited for space saving designs. In cylindrical roller bearings with a full complement of rollers, a cage is not used in order to include an even greater number of rollers to achieve even higher load bearing capacity.

The special cylindrical roller bearings used in machine tools enable very high precision and allow high speeds. In general, they are mounted on a tapered shaft so that the preloading and bearing clearance can be set exactly. With these bearings, there is practically no slant in positioning of the housing and shaft with respect to each other. Bearings with shoulders on the outer and inner rings can absorb limited axial loads.

Tapered roller bearings consist of rings with tapered raceways and tapered rollers in a window-type cage. They are used as single bearings, in versions where one side is sealed or in open versions with two matching bearings. Because open bearings are not self-retaining, the inner ring with the cage and the rollers can be mounted separately from the outer ring.

Spherical roller bearings are double row, self-retaining rolling bearings with a hollow, spherical outer ring raceway. The rolling elements, held in a cage made of sheet metal, plastic or brass, are barrel-shaped. The inner rings have tapered or cylindrical bores so that large bearings with withdrawal sleeves or adapter sleeves can be mounted.

The setting of the barrel-shaped rollers in the raceway of the outer ring compensates for alignment errors of the bearing seat positioning and shaft deflection. This bearing version is quite inexpensive when its load bearing capacity is taken into consideration, and it is often used in bearing housings.

The characteristics of single-row self-aligning roller bearings are similar to those of spherical roller bearings. They are especially suitable for used with high radial impact loads and when compensation for alignment errors is required. They have a very low axial load bearing capacity.

Roller bearings are used in a wide variety of situations, including:

  • Transportation equipment
  • Rail vehicles
  • Agricultural machinery
  • Lifting equipment
  • Concrete mixers
  • Constructions vehicles
  • Equipment for rolling mills and smelting operations

In the area of roller bearings, our product range includes cylindrical roller bearings, tapered roller bearings, axial-cylindrical roller bearings and spherical thrust roller bearings.