In addition, highly accurate manufacturing processes make adjustment of the bearings against each other more reliable, which dramatically improves performance especially during the very first hours of operation.
CL7C specification bearings
Tapered roller bearings produced to the CL7C specifications are
intended for bearing arrangements supporting heavy axial loads, for
example, gearbox pinion bearing arrangements. These bearings, which
are mounted with preload, have special friction characteristics,
higher running accuracy and higher axial load carrying capacity to
provide a constant, accurate mesh.
In contrast to the bearings for general use, CL7C specification bearings can be adjusted to within narrow limits using the frictional torque method, which considerably simplifies the adjustment process.
With CL7C specification bearings there is practically no running-in wear. As a hydrodynamic lubricant film in the roller end/flange contacts is established from the outset, there is virtually no loss of preload and the preload can be maintained at a constant high level throughout operation.
Bearings with flanged outer ring
Certain sizes of single row tapered roller bearings are also
available with a flange on the outer ring. Bearings having this
external flange can be axially located in the housing to provide a
simplified, more compact bearing arrangement. The housing bore is
simpler to produce, as no shoulders are required.