Just-in-time

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

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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.


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Recent topics

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  List of Barriers to Just-in-Time | Barriers to JIT      
 
  Customer Support in Just in Time is Needed      
 

Best Practices - Just-in-time
  Definition of Just-in-time
     
 
  Assumptions of Just-in-time (JIT)
     
 
  Combining JIT and Outsourcing
     
 
  The Principles of Lean
     
 
  Lean Manufacturing Tools for Beginners
     
 



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  How to Reduce the Vendor Risks with Just-in-Time ?
     
 
  Just-in-time: Problematic or Possible?
     
 
  Can Just-in-Time Work Without Kanban?
     
 
  Importance of Inventory Velocity
     
 
  Experiences with Including Purchased Parts in Kanban
     
 
  The Impact of JIT on the Organization of Production Planning
     
 
  Lean and JIT Manufacturing
     
 
  Classification of Lean Tools
     
 
  Kanban and Procurement Planning
     
 
  Just-in-time Needs Flexibility
     
 
  JIT in Variable Marketplaces
     
 
  Information Velocity
     
 
  Poka Yoke - Explanation
     
 
  Why is a Sustainable Business Approach Capable of Removing So Much Inefficiency after years of JIT?
     
 
  Disadvantages of JIT
     
 
  JIT is Playground for Big Companies
     
 
  Intent of Just in Time
     
 

Expert Tips - Just-in-time
 

Main Advantages of JIT?

 
 
 

Lean Tools to Attack Waste

 
 
 

7 Things to Avoid in Just-in-Time

 
 
 

Use of Andon as Part of Just-in-time

 
 
 

The 8 Wastes of Lean Explained

 
 
 

Standard Work in Just-in-Time

 
 
 

Operation Management Issues and Focus Areas

 
 
 

How to Focus your Improvement Efforts?

 
 
 

Synonyms of Just-in-time (JIT)

 
 
 

JIT II

 
 
 

Obtaining a High Supplier Quality

 
 



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Resources - Just-in-time

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

 

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

 

Financial Consequences from Implementing Lean Manufacturing

 

Lean Production for a Green Environment

 

Lean Assessment Tool

 

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

 
 

News about Jit Philosophy


     
 

News about Jit Just-in-time


     
 

Videos about Jit Philosophy


     
 

Videos about Jit Just-in-time


     
 

Presentations about Jit Philosophy


     
 

Presentations about Jit Just-in-time


     
 

Books about Jit Philosophy


     
 

Books about Jit Just-in-time


     
 

More about Jit Philosophy


     
 

More about Jit Just-in-time


     



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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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