Machine Cycle Time

Machine cycle time (Tcm) represents the actual time it takes for one machine to complete all of its operations on one piece, product, patient, file, etc. It is applicable for both single piece and batch machine cycle timeprocessing. Unlike effective machine cycle time, Tcm excludes load and unload time as well as any changeover time.

While Tcm does not reflect operator time, it is critical to understand the relationship between the operator and machine within time and space. Tools such as standard work combination sheets facilitate that understanding, may help identify opportunities for jidoka and provide an important comparison of operator cycle time and takt time.

As with any cycle time measure, machine cycle time should be confirmed through direct observation of multiple cycles. Lean practitioners need to identify and understand significant machine cycle time variation and address appropriately.

machine cycle time1Related posts: The Cycle Time Family, Time

There are 5 Comments

MarkRHamel's picture

Hi there,

Thanks for the comment or should I say, the correction. Very good catch. While the formula was correct, my example was not. It's fixed now, thanks to you.

One way to think of machine cycle time is time per unit, while "rate" is essentially units per measure of time.

Best regards,
Mark

ingfl's picture

In the last formula of Tcm you inverted the numerator with the denominator.

Gregory Idahoise's picture

problem of finding the OEE for a forklift

lloucka's picture

Gregory, the math is the same whether the machine is bolted to the shop floor or is as mobile as a forklift. Is the lift operating as designed, not slow because of poor maintenance or operator training? Is the lift available when needed or is it being recharged or refueled; or broken down, having scheduled service? When in operation is the lift moving goods in the direction of the customer for the first time, or is it hauling scrap or picking up loads that could have been put away in one trip. Maybe ask your question in a different way. Larry