Just-in-Time (JIT) is an inventory system that aims to reduce waste by receiving goods only as needed, thus keeping inventory low. JIT was first developed in the late 18th century as interchangeable parts but was later refined in Japan after World War II as the Toyota Production System. It relies on an efficient supply chain to produce goods in the necessary quantity, quality and time to meet customer demand. While JIT provides benefits like freeing up capital and focusing on tasks, it is susceptible to delays from vendors and seasonality issues if not implemented properly.

1. JUST IN TIME
Hitesh M.Sharma
B.E.Mech ‘38’
Manufacturing
Vishwatmak Om Gurudev College of Engineering
Sept ,2016

2. What is JIT ?
 An Inventory System that keep inventory low.
 Reducing flow time.
 Only producing for specific customer order.
 Relying on efficient supply chain.
 Free up Capital.
 JIT also known as TPS.

3. Simply JIT means:
“The just in time philosophy in the simplest form
means getting the right quantity of goods at the
right place, in right time”

4. Evolution of JIT:
 First developed in ‘1798’,by Eli Whitney’s as
interchangeable parts.
 Although, in 1948 JIT evolved as “TPS” by
‘Taiichi Ohno’ in Japan.
 Based on trial and error.
 No ‘master plan’.

5. Pros:
 Lean inventory.
 Free up capital.
 On task.

6. Cons:
 Delays.
 Vendor priorities.
 Seasons.

7. Where does JIT work efficiently:
 Few products.
 Constant demand.
 Scale quickly.
 Dedicated vendor.

8. List of companies:

9. Apart from JIT:
 Jidoka – Cause of problem.
 Kanbann- Instruction Card.
 Andon - Light Signals.
 Yo-i-dan – Manually transporting inventory.
 3M’s (muda, muri,mura)

10. References:
 Reid & Sanders, 2007
 https://en.wikipedia.org/wiki/Just-in-time
 Manufacturing planning and control for SCM by
Vollmann, Berry, Whybark, Jacobs.

11. THANKYOU
That’s in short about JIT.
hitesh168@gmail.com