Correct option is C
The term
‘Swing over carriage’ refers to the
maximum diameter of the workpiece that can rotate above the saddle of the lathe without interference. It is an important specification that defines the capacity of a lathe machine.
Swing over bed refers to the maximum diameter that can rotate over the lathe bed.
Swing over carriage is smaller because the saddle raises the height of the lathe bed.
The size of a lathe machine is specified by the following points:-
· The length of the bed A maximum distance between live and dead
· The height of centres from the bed
· The swing diameter
· The swing diameter over the bed – It refers to the largest diameter of the work that will be rotated without touching the bed
· The swing diameter over carriage – It is the largest diameter of the work that will revolve over the saddle
· The bore diameter of the spindle
· Horsepower of the motor
