Which statement describes roller bearings?

Which statement describes roller bearings?

• A. Absorb loads created by drive shafts and gears
• B. Used in areas of high centrifugal force and absorb radial loads only
• C. Support radial and axial load
• D. Allow accessory shafts to rotate freely

Answer: (B)

Think of roller bearings as devices that carry the loads between a rotating shaft and its housing by using rollers to roll frictionlessly. The key point is that their design lets them handle radial loads (loads perpendicular to the shaft) and, depending on the design, axial loads (thrust along the shaft) as well. Many roller bearings are chosen specifically because they can take substantial radial loads, and some configurations (like tapered or certain spherical designs) are also capable of carrying axial loads. The statement that describes roller bearings most accurately is that they support both radial and axial loads. The idea of operating in areas of high centrifugal force isn’t a defining feature of roller bearings, and saying they absorb radial loads only misses the fact that many types can also handle axial loads. The other descriptions either oversimplify or are not representative of the typical function of roller bearings.

Think of roller bearings as devices that carry the loads between a rotating shaft and its housing by using rollers to roll frictionlessly. The key point is that their design lets them handle radial loads (loads perpendicular to the shaft) and, depending on the design, axial loads (thrust along the shaft) as well. Many roller bearings are chosen specifically because they can take substantial radial loads, and some configurations (like tapered or certain spherical designs) are also capable of carrying axial loads.

The statement that describes roller bearings most accurately is that they support both radial and axial loads. The idea of operating in areas of high centrifugal force isn’t a defining feature of roller bearings, and saying they absorb radial loads only misses the fact that many types can also handle axial loads. The other descriptions either oversimplify or are not representative of the typical function of roller bearings.