Question

Bed of lathe machine is made up of cast iron because it has
1. Good shock-absorbing property
2. Good electrical property
3. Good surface finish
4. Very low density
5. Good thermal conductivity

Answer 1

Correct Answer - Option 1 : Good shock-absorbing property

Concept:

The bed is the base or foundation of the lathe. It is massive (heavy) and rigid casting made in one piece to resist deflection and vibrations.

It holds or supports all other parts, that is, headstock, tailstock, and carriage, etc.

The beds are mostly made of close-grained grey cast iron. Cast iron has a very high damping capacity. ​Cast iron can withstand more compressive load and resist vibration.