Oilers/Plant Tenders (HHC) Civil Service Practice Exam

Disable ads (and more) with a membership for a one time $2.99 payment

Prepare for the Oilers/Plant Tenders Exam with our comprehensive quiz. Utilize flashcards and multiple choice questions with hints and explanations to excel in your civil service test. Start your preparation now!

Start Multiple Choice Practice Test
Start Flash Cards

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

In a common two-part journal bearing, what is the preferred groove configuration?

  1. One circumferential groove

  2. Multiple shallow grooves

  3. One groove lengthwise at the top

  4. Three grooves evenly spaced

The correct answer is: One groove lengthwise at the top

The preferred groove configuration in a common two-part journal bearing is characterized by having one groove lengthwise at the top. This design allows for effective lubrication flow across the bearing surface. The lengthwise groove can help to strategically direct oil towards the area of highest wear or load, ensuring that the bearing is properly lubricated. In journal bearings, lubrication is essential for minimizing friction and wear, and the single groove allows for a consistent film of lubricant to form. This design also reduces the risk of trapping air or debris within the bearing, which can occur more easily with multiple grooves or circumferential patterns. Choosing a single groove in a lengthwise orientation maximizes the contact area for the oil supply while ensuring that the oil is efficiently delivered across the entire bearing surface, enhancing performance and durability.

More Questions Like This