What Does LEAN Mean? Definition & Core Principle

LEAN means reducing the lead time of a process to an absolute minimum—by systematically identifying, minimizing, and completely eliminating waste (Muda).

The LEAN approach makes a fundamental distinction between two forms:

Obvious waste:
Immediately apparent inefficiencies such as long lead times, defective components, or unused materials.
Hidden Waste:
Activities that appear necessary but do not add direct value to the product—such as unnecessary search and retrieval paths, oversized intermediate storage areas, or redundant documentation steps.

Diagram of the 7 Types of Waste in the LEAN Process

The 7 Types of Waste (7 Mudas) in the Workplace

To make waste in everyday industrial operations more tangible, the LEAN philosophy categorizes it into seven core areas:

1. Transportation: Unnecessary movement of materials and workpieces between workstations.

2. Inventory: Excessive buffer stock that ties up capital and takes up space.

3. Movement (Motion): Unnecessary or non-ergonomic walking and reaching patterns among employees.

4. Downtime: Production stoppages due to missing materials, delayed deliveries, or machine jams.

5. Overproduction: The production of parts that are not currently needed or requested.

6. Overprocessing: Unnecessarily complex process steps or quality characteristics that offer no benefit to the customer.

7. Defects & Rework: Defective products that result in additional time and material costs.

Our Goals: Reduce lead times, enable one-piece flow

A consistent LEAN approach follows clear operational milestones:
Establishing one-piece flow: Flow-oriented production without intermediate stops, in which a workpiece moves continuously from station to station.
Minimal lead times: Organizing workflows so that production and delivery are completed in the shortest possible time.
Maximum process stability: Robust, error-free processes that reduce the workload on employees and guarantee on-time delivery.

List of LEAN Experiences at RK Rose+Krieger

Why LEAN Is a Way of Life at RK Rose+Krieger

At RK Rose+Krieger, LEAN is not just a theory—it’s the DNA of our product development. Every workstation we design is based on the principles of lean, fluid assembly processes.

Experience from over 4,000 projects
Over 20 years of practical experience: Since 2001, we have been developing future-proof industrial workstation solutions for a wide variety of industries.
Over 4,000 completed solutions: From standardized single workstations to highly complex, interlinked workstation systems in assembly lines.
Modular system: All workstation systems are built modularly using RK Rose+Krieger’s proven portfolio of components.
Ergonomics meets efficiency: We combine state-of-the-art equipment with ergonomic design to protect your employees’ health while increasing productivity.

Take the next step toward waste-free manufacturing

Would you like to design your workstations according to LEAN principles or optimize existing production lines as a chain?

Work with our experts to develop a customized workstation concept.

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