Lean Manufacturing Cheat Sheet

The core ideas of Lean Manufacturing distilled into a single, scannable reference — perfect for review or quick lookup.

PiqCue — piqcue.com/lean-manufacturing/cheatsheet

Quick Reference

Seven Wastes (Muda)

The seven categories of non-value-adding activities in manufacturing: overproduction, waiting, transportation, overprocessing, inventory, motion, and defects. Identifying and eliminating these wastes is the foundation of lean manufacturing.

Kaizen (Continuous Improvement)

A philosophy and practice of making small, incremental improvements on a continuous basis, involving all employees from top management to frontline workers. Kaizen events are focused improvement workshops typically lasting three to five days.

Just-in-Time (JIT)

A production strategy that produces items only as they are needed, in the quantities needed, and at the time needed. JIT reduces inventory costs, minimizes waste, and increases responsiveness to customer demand.

Kanban

A visual scheduling system that controls the flow of materials and work through a production process. Kanban uses cards, bins, or digital signals to trigger the production or movement of items only when downstream processes require them.

Value Stream Mapping (VSM)

A lean tool that visually documents every step in a process from raw material to customer delivery, identifying value-adding and non-value-adding activities, information flows, and key metrics like cycle time and lead time.

Jidoka (Autonomation)

The practice of building quality into the production process by giving machines and workers the authority to detect abnormalities and stop production immediately to prevent defects from passing downstream.

5S Methodology

A workplace organization method consisting of five steps: Sort (seiri), Set in order (seiton), Shine (seiso), Standardize (seiketsu), and Sustain (shitsuke). It creates a clean, organized, and efficient work environment.

Poka-Yoke (Error-Proofing)

Design techniques that make it impossible or immediately obvious when an error occurs, preventing defects before they happen rather than detecting them afterward through inspection.

Takt Time

The rate at which a finished product must be completed to meet customer demand, calculated by dividing available production time by customer demand. Takt time synchronizes the pace of production with the pace of sales.

Gemba (The Real Place)

The lean principle of going to the actual place where work is done to observe processes, understand problems, and make decisions based on firsthand information rather than reports or assumptions.

Key Terms at a Glance

Andon:A visual management system that displays the status of a production line and alerts teams to quality or process problems.

Bottleneck:The process step with the lowest capacity that limits the throughput of the entire production system.

Cellular Manufacturing:Arranging workstations and equipment in a sequence that supports a smooth flow of materials and components through the process with minimal transport or delay.

Continuous Flow:A production method where work-in-progress moves through the process one piece at a time without stopping or accumulating between steps.

Cycle Time:The actual time required to complete one cycle of a process or operation from start to finish.

Five Whys:An iterative root-cause analysis technique that involves asking 'why' five times to trace a problem back to its fundamental cause.

Gemba:The actual place where value-creating work is performed; the principle of going to the source to observe and understand.

Heijunka:Production leveling that distributes production volume and mix evenly over time to reduce variability and smooth workflow.

Hoshin Kanri:A strategic planning and management method that aligns organizational goals from top leadership through every level of the company.

Jidoka:The principle of building quality into production by enabling machines and workers to detect and stop for abnormalities immediately.

Just-in-Time:A production strategy that produces the right item, in the right quantity, at the right time to minimize inventory and waste.

Kaizen:The practice of continuous incremental improvement involving all employees in identifying and eliminating waste.

Kanban:A visual signal-based system that controls the production and movement of items based on actual consumption rather than forecasts.

Lead Time:The total elapsed time from order placement to delivery of the finished product to the customer.

Muda:Any activity that consumes resources but creates no value for the customer; waste in any of seven categories.

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