What component is fitted in the crankcase frame to support the crankshaft?

Prepare for the Engineman EN A School Test 1. Utilize flashcards and multiple choice questions with detailed explanations to boost confidence and readiness for the test.

Multiple Choice

What component is fitted in the crankcase frame to support the crankshaft?

The crankshaft is supported inside the engine by the main bearings. These bearing shells sit in the crankcase and are clamped by bearing caps to form the main journals on which the crankshaft rotates. They provide a precise, oil-lubricated surface that carries the radial loads from the crank and keeps the shaft properly aligned. Crankshaft bolts are just fasteners that hold parts together and don’t provide spinning support. Connecting rods attach to the crankshaft at the crankpins and transfer piston forces; they don’t support the crank in the frame. Seal rings are for sealing gaps to prevent leaks, not for supporting the crankshaft.

The crankshaft is supported inside the engine by the main bearings. These bearing shells sit in the crankcase and are clamped by bearing caps to form the main journals on which the crankshaft rotates. They provide a precise, oil-lubricated surface that carries the radial loads from the crank and keeps the shaft properly aligned. Crankshaft bolts are just fasteners that hold parts together and don’t provide spinning support. Connecting rods attach to the crankshaft at the crankpins and transfer piston forces; they don’t support the crank in the frame. Seal rings are for sealing gaps to prevent leaks, not for supporting the crankshaft.

More practice questions