Which of the following types of bearings are...

🔍 Key Concepts

• Difference between radial bearings (supporting the shaft weight) and thrust bearings (taking axial propeller thrust) in a propulsion shaft line • Typical construction features of line shaft (intermediate shaft) bearings on ships (mounting style, lining material, lubrication method) • Common design of thrust bearings such as Kingsbury or pivoted-shoe types

💭 Think About

• First, decide: does a line shaft bearing primarily carry radial load, thrust load, or both? Eliminate any option that is clearly a thrust‑only design. • Look for clues in each choice that suggest it is used for continuous, steady radial support of a long shaft in a tunnel (think: pedestal bearing along the shaft line). • Consider which description best matches a bearing that can self-align with small shaft misalignments and is simple to lubricate over long periods.

✅ Before You Answer

• Identify which option clearly describes a thrust bearing (axial load, pivoted shoes/segments) and set that aside. • Look for words like sleeve, babbitt-faced, and ring-oiled and think about how those relate to common line shaft pedestal bearings. • Check which design would best handle slight misalignment in a long shaft (hint: a certain feature in one option allows the bearing shell to tilt slightly).

Which of the following types of bearings are used as line shaft bearings?

Tapered roller, split type radial

Segmental, pivoted-shoe thrust

Rigidly mounted, radial sleeve

Ring-oiled, babbitt-faced, spherical seat, shell

🔍 Key Concepts

💭 Think About

✅ Before You Answer