Just in Time (JIT), TAKT & Single Piece Flow

Just in Time Stock and Inventory Tool

Just In Time (JIT) is one of the key tools used in reducing the cost burden related to high levels of Stock and Inventory, within both Internal and External Supply Chains.

Implementing a Just in Time methodology, as the name suggests, ensures that materials are delivered at their point of use as and when required, not in any other quantity than that which is required, or at a time that suits the supplier rather than the recipient.

Our approach to Just in Time is to evaluate the actual levels of stock in the supply chain and determine optimum stock levels; any excessive stock will then be identified together with its cause. Upstream processes that are identified as the cause of excessive stock will then become the focus for optimisation under the Just in Time philosophy. A key element of JIT is to make clear the relationship between the Customer and Supplier, and emphasise their roles and responsibilities throughout the entire supply chain.


Just in Time Tools

Cellular Manufacture & Single Piece Flow

Cellular Flow Flexible Layout

Single Piece Flow is a concept whereby processes manufacture in the lowest possible denominator (1). This size of batch is acknowledged as the most flexible form of manufacture although in some instances, for example, high-speed manufacture of small items it is recognised that this may be an inappropriate lot size.

Cellular Manufacture involves locating equipment involved in the manufacture of the same product in such a way that materials can be passed in units of (1) from one operation to the next, “Single Piece Flow”. When these individual operations are balanced and working in harmony there is little if any inventory between workstations. In its simplest form, Cellular Manufacture can be considered as merely the linking of operations.



TAKT Definition

TAKT is a German word that translates to Rhythm or Beat, it is used to describe the ideal rate of manufacture that a process should adopt to satisfy the needs of its Customer.

Manufacturing to the TAKT time will ensure that processes generate outputs, which match the actual consumption of their customer, the upstream process. Manufacturing to TAKT adopting a policy of Single Piece Flow, and using Kanban to signal requirements between processes which cannot be linked will have an extremely positive effect on flexibility and stock reduction throughout the entire supply chain.



  • Reduction in Lead Time
  • Reduced Costs of Inventory
  • Less Obsolescence
  • Improved Supplier Performance
  • Quality Concerns and Waste
  • Increased Productivity and Performance
  • Greater Return on Investment
  • Reduced Cost per Part

View success stories where Kaizen Institute Consulting Group helped clients achieve production improvements through Lean Tools.

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Kaizen Institute Consulting Group
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