Understanding “Time Elements in Operations Management"

Cycle Time

Cycle time is the time required to process one piece

For example,

Grinding Cycle time = 100 sec

It includes,

Loading Cycle time + Auto Cycle time + Unloading time

=20 sec +75 sec +5 sec

=100 sec

ie Every 100 sec , we can get one component 

Throughput Time 

Throughput time = Sum of ( Cycle time in entire process of a component)

Total processing time for one component

For example,

Bearing ring throughput time = 240 sec

It means

Parting cycle time +Grinding cycle time +Turning cycle time

=60 sec +100 sec+80 sec

=240 sec

ie To process one bearing ring, the total time required is 240 sec

Lead time 

Lead Time = Sum of ( Cycle time in the entire process of a component) + all non-value added times in the system

ie  Lead time = Throughput time + all waste/delay time in the system

For example,

Bearing Lead time = 2 days, 

It means = 240 sec+all delays leads to 2 days