Question

which of the following elements is not used as a roller in roller bearings?​

Answer 1

Answer:

.A plain bearing, or more commonly sliding bearing and slide bearing (in railroading sometimes called a solid bearing, journal bearing, or friction bearing), is the simplest type of bearing, comprising just a bearing surface and no rolling elements.

Answer 2

The radial load-carrying capability of cylindrical bearings is used as a roller in roller bearing.

Cylindrical bearings:

• Taper roller bearings and spherical bearings are great.
• In roller bearings, all three can be employed as roller elements.  
• Tapered roller bearings use conical rollers running on conical courses.

The radial load-carrying capability of cylindrical bearings :

• The "inner race" is often an integrated part of the shaft or stub shaft, rather than a distinct inner race for roller bearings.
• This minimizes complexity, weight, and concentricity tolerance accumulation.
• Overall, this is a good deal, but the cost of replacement or repair is likely to be more than.
• If the inner races were distinct.