Cycle Time
Cycle time is the total time required to complete all the steps of a process for one unit of production.
Cycle time measures the total elapsed time from when a task begins until it is completed for a single unit. This includes both value-added time (processing, assembly) and non-value-added time (waiting, moving). It is a direct measure of how long a specific process takes.
Manufacturers track cycle time to understand production capacity and identify inefficiencies. A shorter, more consistent cycle time leads to higher throughput and more predictable delivery dates. Analyzing cycle time data helps pinpoint bottlenecks where work-in-progress accumulates.
To measure cycle time, teams use stopwatches for manual tasks or collect data directly from machines using sensors or MES software. For example, a metal stamping press might record the time from when a steel coil is fed in until a stamped part is ejected. This data is then used to set performance benchmarks and guide continuous improvement efforts.
A medical device assembly station builds a diagnostic kit. The process starts when an operator picks the first component. The process ends when the completed kit is placed in a tray for quality inspection. If this takes 4 minutes and 30 seconds, the cycle time is 4.5 minutes.
What is the difference between cycle time and lead time?
Cycle time is the time to produce one unit. Lead time is the total time from a customer's order to final delivery, which includes cycle time plus other delays.
How does cycle time relate to takt time?
Cycle time is the actual time it takes to make a part. Takt time is the required pace of production needed to meet customer demand.
Does cycle time include non-productive time like waiting?
Yes, a full process cycle time includes all time, including waiting and transport. Machine cycle time may only measure active processing time, so consistency in measurement is important.
What are common ways to reduce cycle time?
Methods include improving workstation ergonomics, reducing machine setup times, automating manual tasks, and eliminating unnecessary movement of materials or people.
Is a shorter cycle time always better?
Usually, but not if it compromises quality or safety. The goal is a short, consistent, and predictable cycle time.
Takt Time
Takt time is the rate at which you need to complete a product to meet customer demand.
Lead Time
Lead time is the total time elapsed from when a customer places an order to when they receive the finished product.
Throughput
Throughput is the rate at which a system produces finished goods over a specific period.
Bottleneck
A bottleneck is the slowest point in a production process that limits the entire system's output.
Overall Equipment Effectiveness
OEEOverall Equipment Effectiveness (OEE) is a metric that measures manufacturing productivity by combining equipment availability, performance, and quality.
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