Just-in-time

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Supply Chain Planning. Explanation of Just-in-time philosophy of Taiichi Ohno. ('70)


Just-in-Time

What is Just-in-Time? Definition

Just-in-time was pioneered by Taiichi Ohno in Japan at the Toyota car assembly plants in the early 1970s. It is a manufacturing organization philosophy.  JIT decreases waste by supplying parts only when the assembly process requires them. At the heart of JIT lies the kanban, the Japanese word for card. This kanban card is sent to the warehouse to request a standard quantity of parts as and when they have been used up in the assembly/manufacturing process. JIT requires precision, as the right parts must arrive "just-in-time" at the right position (work station at the assembly line). It is used primarily for high-volume repetitive flow manufacturing processes.


History of Just-in-Time

Historically, the JIT philosophy arose out of two other things:

  1. Japan's wish to improve its production quality. At that time, Japanese companies had a bad reputation as far as quality of manufacturing and car manufacturing in particular was concerned.
  2. Kaizen, also a Japanese method of continuous improvement.

The Just-in-time framework regards inventories as a poor excuse for bad planning, inflexibility, wrong machinery, quality problems, etc. The target of JIT is to speed up customer response while minimizing inventories at the same time. Inventories help to respond quickly to changing customer demands, but inevitably cost money and increase the needed working capital.


In 1990 James Womack wrote a book called "The Machine That Changed The World", introducing the terminology 'Lean Manufacturing'. Also you may encounter the word: 'Lean Production'. The principles behind these approaches do not substantially differ from the techniques developed by Ohno at Toyota.


Attention Areas of Just-in-Time

Typical attention areas of JIT implementations include:

  • Inventory reduction.
  • Smaller production lots and batch sizes.
  • Quality control.
  • Complexity reduction and transparency.
  • Flat organization structure and delegation.
  • Waste minimization.

External extended Just-in-Time

Through the arrival of Internet and Supply Chain Planning software, companies have in the mean time extended Just-in-time manufacturing to outside the company borders. By demanding from their suppliers to deliver inventory to the factory only when it's needed for assembly, making JIT manufacturing, ordering and delivery processes even speedier, more flexible and more efficient. In this way, Integrated Supply Networks (Demand Networks) or Electronic Supply Chains are being formed.


Special Interest Group - Just-in-time


Special Interest Group (1275 members)


Forum - Just-in-time  

Here you will find interesting and educational discussions.


  How to Reduce the Vendor Risks with Just-in-Time ? (1 reactions)
When we execute JIT, we normally require our vendor to prepa...
 
 
 
 
  Can Just-in-Time Work Without Kanban?
Just-in-Time is a basic philosophy or a paradigm. If you rea...
 
 
 
 
  Importance of Inventory Velocity (2 reactions)
Why is inventory velocity so important in supply chain manag...
 
 
 
 
  Experiences with Including Purchased Parts in Kanban (1 reactions)
Taiichi Ohno was plant manager of a Toyota factory wh...
 
 
 
 
  The Impact of JIT on the Organization of Production Planning (1 reactions)
JIT will have a strong impact on your organization of produc...
 
 
 
 
  Lean and JIT Manufacturing (7 reactions)
Is there any difference between Lean and JIT Production?...
 
 
 
 
  Classification of Lean Tools (1 reactions)
Can you briefly explain how to classify lean tools? I mean:...
 
 
 
 
  Kanban and Procurement Planning (2 reactions)
Does the Kanban or the pull system contradict with the procu...
 
 
 
 
  Just-in-time Needs Flexibility (1 reactions)
Of course, Just-in-time needs a flexible manufacturing sy...
 
 
 
 
  List of Barriers to Just-in-Time | Barriers to JIT (4 reactions)
Though JIT as a theoretical concept seems superb, there are ...
 
 
 
 
  JIT in Variable Marketplaces (5 reactions)
In trying to implement a JIT system within my organisation. ...
 
 
 
 
  Information Velocity (2 reactions)
Why is information velocity important in supply chain manage...
 
 
 
 
  Poka Yoke - Explanation (1 reactions)
Poka Yoke is a method that shapes the production process the...
 
 
 
 
  Why is a Sustainable Business Approach Capable of Removing So Much Inefficiency after years of JIT? (1 reactions)
I had a very interesting conversation with someone who has b...
 
 
 
 
  Disadvantages of JIT (14 reactions)
A lean system has no resilience. Integrating JIT as ...
 
 
 
 
  JIT is Playground for Big Companies (4 reactions)
I think that JIT or zero inventory or any system aiming simi...
 
 
 
 
  Customer Support in Just in Time is Needed (1 reactions)
I think for implementing Just-In-Time, the customer must sup...
 
 
 
 
  Intent of Just in Time (4 reactions)
In my view, ultimately the intent of just in time is to mini...
 
 
 
 

Best Practices - Just-in-time

Here you will find the most valuable ideas.


  Definition of Just-in-time (3 reactions)
JIT can be considered as: 1. A way of life 2. A philosophy...
 
 
 
 
  Assumptions of Just-in-time (JIT) (6 reactions)
Assumptions for effective JIT: 1. It depends on the type of...
 
 
 
 
  Combining JIT and Outsourcing (2 reactions)
JIT and outsourcing go hand in hand. On one side it seems c...
 
 
 
 
  Single Minute Exchange of Dies (6 reactions)
Dear reader, I am currently working on a Single Minute Excha...
 
 
 
 
  The Principles of Lean (4 reactions)
Lean works on certain principles: 1. Identify customer spec...
 
 
 
 
  Lean Manufacturing Tools for Beginners (10 reactions)
Could somebody tell me what are the most important lean tool...
 
 
 
 
  Just-in-time: Problematic or Possible? (5 reactions)
Just-in-time (JIT) has always been a troublesome part of the...
 
 
 
 

Expert Tips - Just-in-time

Here you will find high-quality advice from experts.


 

Main Advantages of JIT?

Benefits of Just-in-time...
 
 
 

Lean Tools to Attack Waste

Waste Management, Waste Tools Overview...
 
 
 

7 Things to Avoid in Just-in-Time

Just-in-Time Pitfalls...
 
 
 

Use of Andon as Part of Just-in-time

Signaling Abnormalities...
 
 
 

The 8 Wastes of Lean Explained

Waste Management...
 
 
 

Standard Work in Just-in-Time

Just-in-Time...
 
 
 

Operation Management Issues and Focus Areas

Operations Management, JIT, Kaizen...
 
 
 

How to Focus your Improvement Efforts?

Achieve More With Less, Kaizen, BPR, JIT, Lean, Value Chain...
 
 
 

Synonyms of Just-in-time (JIT)

Other Terms that are used to Indicate JIT...
 
 
 

JIT II

JIT with supplier...
 
 
 

Obtaining a High Supplier Quality

Best Practice to Consider...
 
 

Resources - Just-in-time

Here you will find powerpoint presentations, micro-learning videos and further information sources.


Summary of Lean Manufacturing and Maintenance. History, Tools, PROs and CONs

Operational Excellence, Maximizing Efficiency...
 

The Role of Value Chain Functions, Quality Management and Innovation in Competitive Advantage

Value Chain Management, Quality Management, Innovation, Operational Excellence...
 

Financial Consequences from Implementing Lean Manufacturing

JIT, TQM...
 

Lean Production for a Green Environment

Lean Production, Lean Manufcaturing...
 

Lean Assessment Tool

Lean / Six Sigma Assessment...
 

Managing your Inventory: Quick Introduction to Just in Time, Stock Review and ABC Analysis

Basic Understanding of 3Inventory Management Techniques...
 
 

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Compare with: Kaizen  |  Deming Cycle  |  Scientific Management  |  Six Sigma  |  Value Chain  |  Value Stream Mapping  |  CPFR  |  Bricks and Clicks  |  Delta Model  |  3rd Party Logistics (3PL)  |  RFID Technology


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