Locating rings are identified by the prefix FRB followed by the part number indicating the width and outside diameter in millimeters e.g. FRB 9.5/100. Locating rings are used in split plummer block housings to locate the shaft axially in both directions.
Locating Rings
The width of the bearing seat in SNL housings is machined in such way that it can accommodate bearings in the locating as well as in the non-locating position.
The locating bearing, which locates the shaft axially in both directions, must be secured in the housing on both sides with a locating ring, in most cases the non-locating bearing is free to move axially in the housing to accommodate thermal expansion of the shaft. However, CARB toroidal roller bearings are an exception. These bearings accommodate axial displacement internally and must therefore be secured in the housing, on both sides, with a locating ring.
Locating rings are identified by the designation prefix FRB followed by figures indicating the width/outside diameter in millimetres, e.g. FRB11.5/100