The Just-In-Time (JIT) system was developed at Toyota Motor Company in Japan in the mid-1970s to eliminate waste and improve productivity. JIT seeks to produce and deliver the right items in the necessary quantity at the exact time they are needed in the production process. It aims to reduce costs, decrease waste, improve quality, and respond rapidly to customer demand through techniques like Kanban cards, continuous improvement efforts, and minimizing inventory levels.

1. JUST-IN-TIME SYSTEMS
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Module - 4

2. HISTORY & DEVELOPMENT OF JIT
 The JIT system was developed at the Toyota Motor
Company in Japan.
 The modern application of JIT was popularized in the
mid 1970s, by Toyota, by Taiichi Ohno and his
colleagues.
 Owing to lack of space and lack of natural resources,
the Japanese have developed an aversion to waste.
 As a result, naturally, JIT philosophy developed in
Japan.
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3. INTRODUCTION
 Manufacturing organizations had faced the challenge of
increasing the quality of their products while lowering
product cost & increasing the speed with which customers
order are filled.
 To meet these challenges firms had to examine new
approaches to their operations philosophies was known as JIT
production system.
 JIT is an approach that seeks to eliminate all sources of
wastage in production activities by providing the right part
at the right time.
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4. WHAT IS JUST-IN-TIME SYSTEM?
• JIT is defined as “a philosophy of manufacturing based
on planned elimination of all waste and continuous
improvement of productivity.
• Several companies use the term “ The Toyota System”
• JIT system are also known as:
“zero inventory”, “Synchronous manufacturing”,
“Material as needed” and “Kanban system”.

5. IMPORTANCE OF JIT SYSTEMS
 To provide products with the most value for the
lowest cost with the faster response time.
 Quick response to market demands provide a
powerful, sustainable competitive advantage.
 It is a weapon of choice in reducing the time-from-
order-to-delivery cycle.
 Utilizing the full capacity of the workers in the JIT
system.
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6. OBJECTIVE OF JIT
 Produce only the products that customers want.
 Produce products only as quickly as customers
want to use them.
 Produce products with perfect quality.
 Produce in the minimum possible lead times.
 Produce products with features that customers
want and no others.
 Produce with no waste of labor, materials or
equipment.
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7. SEVEN WASTES
 Shingo, a Japanese JIT authority & engineer at
Toyota Motor Company identifies seven wastes as
being the targets of continuous improvement in
production process.
 Wastage of overproduction
 Wastage of waiting
 Waste of transportation
 Waste of processing itself
 Waste of stocks
 Waste of motion
 Waste of making defective products 7

8. BASIC ELEMENTS OF JIT
 Flow Layout
 Smoothed build up rate
 Mixed model scheduling
 Small lots & minimum set up time
 Buffer stock removal
 Kanban Card – Pull system
 Quality
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9. BASIC ELEMENTS OF JIT
 Product & process simplification
 Standard container
 Preventive maintenance
 Flexible workforce
 Organization in modules or cells
 Continuous improvement
 JIT purchasing
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10. BENEFITS OF JIT
 Product Cost
 Quality
 Design
 Productivity improvement
 Higher production system flexibility
 Administrative ease & simplicity
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