kanban system

**Kanban system** is the **the visual pull-control method that authorizes replenishment using cards or digital signals** - it limits work in progress and synchronizes upstream production with downstream consumption. **What Is Kanban system?** - **Definition**: A signaling mechanism where each kanban represents permission to produce or move a defined quantity. - **Core Rule**: No signal means no production, which prevents uncontrolled overbuild. - **System Variables**: Card count, container size, replenishment lead time, and safety buffer. - **Formats**: Physical cards, bins, and electronic kanban integrated with MES or ERP systems. **Why Kanban system Matters** - **WIP Control**: Kanban makes inventory limits explicit and enforceable at daily operations level. - **Flow Stability**: Production pace follows actual withdrawal, reducing schedule oscillation. - **Problem Visibility**: Signal shortages quickly expose bottlenecks and supply issues. - **Simple Governance**: Visual controls improve execution consistency without complex scheduling logic. - **Scalable Lean Tool**: Kanban can be deployed from single cells to multi-line value streams. **How It Is Used in Practice** - **Loop Design**: Define replenishment loops, card quantities, and trigger points by product family. - **Card Tuning**: Adjust kanban count based on demand variation and process lead-time improvement. - **Discipline Audits**: Enforce no-card-no-work rule and monitor card-turn performance daily. Kanban system is **a practical visual engine for pull-based flow control** - clear authorization rules keep production synchronized, lean, and responsive.