Cast iron

Copper and brass

Close grained iron

White cast iron

Brass

Cast Iron

Lead

Bronze

Regulate cutting action and lubricate surface

Smooth effective operation

Improves dimensional accuracy

Improves cutting ability

As per checklist

As per the knowledge of trainee

As per the knowledge of instructor

As per the knowledge of manager

Maintain machine in good working order

Increase the cost of inspection

Reduce the vibration of machine

To keep the maintenance records