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What is JIT and JIS in manufacturing?

Nov 1, 2023 | 3PL Services

Efficiency is fundamental in modern manufacturing. To maintain a competitive edge, manufacturers are constantly seeking ways to streamline their processes. 

Two methodologies that have revolutionized the industry are Just in Time (JIT) and Just in Sequence (JIS). 

Let’s delve into the world of JIT and JIS in manufacturing!


JIT and JIS process in manufacturing

In manufacturing, JIS and JIT are essential concepts. 


Just in Time

JIT involves producing only what is needed, when it is needed, and in the exact amount required. 

JIT aims to eliminate waste, reduce excess inventory, and synchronize production with customer demand. 

This practice is based on efficiency, minimizing storage costs, and optimizing production workflows.


Just in Sequence

JIS is an extension of JIT, particularly applied in assembly processes. JIS focuses on delivering components directly to the assembly line in the required sequence. 

Just in Sequence process ensures that parts arrive precisely when they are needed in the assembly process, reducing the risk of errors and enhancing efficiency.


The Principles of JIT and JIS

Although Just in Time and Just in Sequence complement each other, each one is made up of specific principles.


JIT Principles

  • Waste Reduction: JIT seeks to eliminate various forms of waste, including overproduction, excess inventory, and unnecessary transportation. 
  • Small Batch Production: Just in Time advocates for small, frequent production runs rather than large batch production. 
  • Synchronized Production: JIT aligns production with customer demand, ensuring that items are produced just in time to meet orders. 


JIS Principles

  • Sequential Delivery: JIS ensures that components arrive in a specific order to match the assembly process. This sequence prevents assembly line disruptions and errors.
  • Efficient Component Management: JIS requires efficient component management, often involving close collaboration with suppliers and meticulous sequencing.
  • Error Reduction: By delivering components in sequence, Just in Sequence reduces the chance of assembly errors and enhances overall efficiency.


Just in Time and Just in Sequence in Practice

JIT and JIS process are used in various forms for many industries. Some examples are the following. 

Talking about the automotive industry, Toyota’s renowned production system is a prime example of JIT in action. 

It enabled Toyota to become one of the world’s largest automakers, renowned for its efficiency and quality.

However, in automobile assembly, Just in Sequence process ensures that components arrive in precise sequence for efficient assembly, preventing assembly line stoppages.


Are you ready to optimize your manufacturing operations?

Explore the implementation of JIT and JIS to achieve efficiency and cost-effectiveness. All the information you need will be found on our social networks.

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Reach out to experts in the field to learn how these methodologies can revolutionize your manufacturing processes! 

Contact us to learn more!

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