Question

The unit of lathe which houses the lathe spindle and controls levers for speed selection

Answer 1

The Head stock is the lathe spindle which controls levers for a speed selection in the house. It consists of drivers unit and hollow spindle like feed reverse lever, main spindle, and cone pulley, etc.

For this Head stock, it consists of rear gears, for machine spindle and it will keep the alignment later in the bed to the fixed part in lathe bed at left side.