Oilers/Plant Tenders (HHC) Civil Service Practice Exam

What is the nature of grooves found in plain sleeve bearings?

1. They are usually deep grooves with vertical sides

2. They are shallow and rounded

3. They are not commonly found

4. They are U-shaped

The correct answer is: They are usually deep grooves with vertical sides

The nature of grooves found in plain sleeve bearings is characterized by their typical format, which includes being deeper with vertical sides. These grooves are designed to accommodate lubrication and allow for the movement of lubricants throughout the bearing surface, reducing friction and wear during operation. The depth and vertical orientation of these grooves can effectively retain oil, ensuring there is a steady supply of lubrication to facilitate smoother movement between the bearing and the shaft it supports. This design feature significantly enhances the lifespan and performance of the bearing. A deep groove with vertical sides helps prevent the loss of lubricant under load and enhances the ability of the bearing to handle various operational stresses. This configuration contrasts with other bearing designs or methods, which may employ different groove shapes or depths, but for plain sleeve bearings, this design is integral to their functionality. Therefore, the correct choice accurately reflects the standard engineering principles governing the construction and operational characteristics of plain sleeve bearings.