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Difference Between Traditional and Lean Manufacturing System


For years manufacturers have created products in anticipation of having a market for them. Operations have traditionally been driven by sales forecasts and firms tended to stockpile inventories in case they were needed. A key difference in Lean Manufacturing is that it is based on the concept that production can and should be driven by real customer demand. Instead of producing what you hope to sell, Lean Manufacturing can produce what your customer wants with shorter lead times. Instead of pushing product to market, it's pulled there through a system that's set up to quickly respond to customer demand. 
Difference Between Traditional and Lean Manufacturing
Lean organizations are capable of producing high-quality products economically in lower volumes and bringing them to market faster than mass producers. A lean organization can make twice as much product with twice the quality and half the time and space, at half the cost, with a fraction of the normal work-in-process inventory. Lean management is about operating the most efficient and effective organization possible, with the least cost and zero waste.

Business Strategy Product-out strategy focused on exploiting economies of scale of stable product designs and non-unique technologies Customer focused strategy focused on identifying and exploiting shifting competitive advantage.
Customer Satisfaction Makes what engineers want in large quantities at statistically acceptable quality levels; dispose of unused inventory at sale prices Makes what customers want with zero defect, when they want it, and only in the quantities they order
Leadership Leadership by executive command Leadership by vision and broad participation
Organization Hierarchical structures that encourage following orders and discourage the flow of vital information that highlights defects, operator errors, equipment abnormalities, and organizational deficiencies. Flat structures that encourage initiative and encourage the flow of vital information that highlights defects, operator errors, equipment abnormalities, and organizational deficiencies.

External Relations
Based on price
Based on long-term relationships
Information Management
Information-weak management based on abstract reports
Information-rich management based on visual control systems maintained 
by all employees
Culture of loyalty and obedience, subculture of alienation and labor strife
Harmonious culture of involvement based on long-term development of human resources
Large-scale machines, functional layout, minimal skills, long production runs, massive inventories
Human-scale machines, cell-type layout, multi-skilling, one-piece flow, zero inventories
Operational capability
Dumb tools that assume an extreme division of labor, the following of orders, and no problem solving skills
Smart tools that assume standardized work, strength in problem identification, hypothesis generation, and experimentation
Maintenance by maintenance specialists
Equipment management by production, maintenance and engineering
"Isolated genius" model, with little input from customers and little respect for production realities.
Team-based model, with high input from customers and concurrent development of product and production process design

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