# Critical Concepts of Tolerance Stacks ASME Y14.5 -1994 & 2009 Advanced Level

This 3-day advanced-level course provides an in-depth explanation of how to use tolerance stacks to analyze product designs and how to use geometric tolerances in stacks. The course can be conducted in three eight-hour sessions or with flexible scheduling, including five mornings or five afternoons.

You’ll learn the essential methods and concepts used for creating 1D part and assembly tolerance stacks. The course discusses how virtual condition affects part assembly, stack methods, and using the stack form and spreadsheet. You’ll practice calculating part and assembly stacks using coordinate dimensions, runout/concentricity, equal bilateral/unilateral profile, multiple geometric tolerances, position tolerances (RFS & MMC) with datum references at MMB, and using form and orientation applied to features and features of size.

•  Critical Concepts of Tolerance Stacks Course Book
•  Critical Concepts of Tolerance Stacks Exercise Workbook
• Tolerance Stacks Drawing Package
• Tolerance stack Excel spreadsheet template
• Tolerance Stacks Summary Chart
• Y14.5-1982 / 1994 / 2009 Effects on Tolerance Analysis Comparison Chart

The course features all the topics covered in the 2-day foundational level course, including numerous practice problems and in-depth coverage of tolerance stacks applications based on the ASME Y14.5 1994 and 2009 Standards. However, this advanced-level class provides even more tolerance stacks practice with fifteen additional stack-up exercises.

## What Will You Learn

After completing this advanced-level course, you’ll be able to:
• Describe how virtual condition affects the assembly of parts
• Explain the importance of tolerance stacks and be familiar with stack methods, the stack form and the stack spreadsheet
• Calculate part stacks using coordinate dimensions, runout and concentricity tolerances, equal bilateral and unilateral profile tolerances, multiple geometric tolerances, position tolerances at RFS and MMC with datum references at MMB
• Calculate assembly stacks using coordinate dimensions, runout and concentricity tolerances, equal bilateral and unilateral profile tolerances, multiple geometric tolerances, position tolerances at MMC with datum references at MMB
• Calculate stacks using form and orientation applied to features and features of size

## Is This Course For You

This course is valuable for individuals who create or interpret engineering drawings; product and gage designers; process, product, and manufacturing engineers; supplier quality engineers/professionals; CMM operators; buyers/purchasers; checkers; inspectors; technicians; and sales engineers/professionals..

## Materials Provided

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## Course Requirements

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## Topics

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