Question 86General Subjects - QMED70% to pass
Why do roller bearings have higher loading capacities than ball bearings?
AI Explanation
The correct answer is C) They have a greater contact area.
Roller bearings have higher loading capacities than ball bearings because they have a greater contact area between the bearing components. The cylindrical shape of roller bearings allows for more surface area to distribute the load, compared to the point contact of ball bearings. This increased contact area enables roller bearings to support heavier loads without exceeding their fatigue life.
The other answer choices are incorrect because they do not directly address the key reason for the higher load capacity of roller bearings. While they may be true in some cases, they do not provide the primary explanation for the superior load-bearing capacity of roller bearings.
Related Questions
#84 An example of an antifriction bearing is a _______________.#85 Which bearing will carry the load on two small points diametrically opposite to each other? #87 In a compression type automatic grease cup, the lubricant is forced into the bearing by _______________.#88 To ensure adequate lubrication and to prevent a high operating temperature, the recommended amount of grease injected into a ball or roller bearing is approximately _______________.#89 Machinery with ball bearings designed to be filled with grease should have the relief plug temporarily removed while grease is being added. This plug should remain out until the machinery has been operated and sufficiently warmed up to ensure that _______________.