RKB taper roller bearings have the elements like frustum of cone and roll on tapered surface which converges towards a single point on the bearing axis.
The single row taper roller bearings are of separable design: the outer ring/cup and the inner ring/cone with rollers and cage assembly can be separately mounted. The two parts are interchangeable.
The metric single bearings have standardized dimensions as listed in the ISO 355/1977 and those designated with prefix J conform to American AFBMA 19.1/1987.
The inch size bearings conform to American AFBMA 19/1974.
The taper roller bearings can carry only single direction axial loads. Under pure radial loads, an axial force is induced within the bearings.
A correct operational clearance has to be identified for the correct performance and reliability of the application.
For large size and/or heavy engineering applications, the steel pin-type cage and case hardened carburizing alloy steels can be considered.
They can also be produced with a rib on the outer cup as a flange to be used when the housing cannot be manufactured with shoulder, but only with a passed through hole so that, in this case, axial location can be provided by the bearing cup.
RKB produces the single row taper roller bearings as ready-to-mount matched pairs.
The matched pairs in “O” back-to-back (designation DB) or “X” face-to-face (designation DF) arrangements, locate the shaft in both axial directions and the optimum axial play is adjusted and guaranteed after mounting.
In case of taper roller bearings, clearance should be in radial direction, but it is measured and adjusted in axial direction.
