ANSI Vibration Standards

Unbalanced loads in motors and engines can cause damaging vibrations for both equipment and human hearing.

Mechanical vibration in machines can cause extra wear and tear on the equipment and noise. For this reason, the American National Standards Institute or ANSI has issued voluntary standards for how to measure vibration, acceptable levels of vibration, and how to reduce mechanical vibration. Many ANSI standards on vibration have been adopted by the International Standards Organization or ISO.

Setting the Standard for ANSI

ANSI standard 2041 defines the terms used in ANSI's other standards for vibration and shocks. ANSI standard 1940 part 1 defines the general vibration requirements for rigid motors. ANSI standard 1940 part 2 describes the concept of mechanical vibration balance quality.

ANSI Standards for Measuring Vibration

ANSI 2954 S2 defines how to measure mechanical vibration in rotating and reciprocating machinery. ANSI standard 10816 defines how to evaluate the mechanical vibration by measuring non-rotating parts.

ANSI Standards for Motors

ANSI standard 2372 sets the limits for mechanical vibration of machines operating between 10 and 200 rotations per second. ANSI standard 2373 sets the limits for mechanical vibration of electric devices with shafts between 80 and 400 millimeters. Other ANSI standards cover other types of motors.

ANSI Standards for Balancing and Vibration Mitigation

ANSI standard 10814 lists machines that are sensitive to unbalancing. ANSI standard 11342 describes the methods for reducing mechanical vibration by balancing flexible rotors.

References

• "Mechanical Vibration Practice with Basic Theory"; Viswanatha Ramamurti; 2000
• "Machinery Vibration: Measurement and Analysis"; Victor Wowk; 1991
• "Harris' Shock and Vibration Handbook"; Allan Piersol, Cyril Harris, Thomas Paez; 2009
• "Technology for a Quieter America"; Committee on Technology for a Quieter America; 2010
• "Handbook of Condition Monitoring"; B. K. N. Rao; 1996

Resources

• "Human Response to Vibration"; Neil J. Mansfield; 2004
• "The Noise-Vibration Problem-Solution Workbook"; Larry Royster, Julia Royster; 2002