scope:

This Standard presents a method for measuring filtered linear vibrations of a gear unit. Types of instrumentation,measurementmethods, and testing procedures for the determination of linear vibration levels for specific types of gear units are provided. Vibration limits at discrete frequencies are recommended for acceptance testing. It is not the intent of this Standard to provide unfiltered limits.

The recommended limits and conditions specified herein are intended as the vibration criteria for performance of the gear drive during the equipment manufacturer's test when specifically agreed to by the manufacturer and purchaser.

This Standard is specifically applicable to enclosed speed reducing or increasing gear drive units designed, rated, and lubricated in accordance with product standards of the American Gear Manufacturers Association, as indicated in Table 1---1.

Torsional vibrations of a geared system are not included in this Standard.

NOTE: Compliance with this Standard does not constitute a warranty of the measured gear unit's performance under installed field service conditions.