scope:

This standard describes the instrumentation, measuring methods and test procedures necessary for the determination of a gear unit`s sound pressure levels for acceptance testing. Sound power measurement methods are provided in annexes A, B and C for use when required by specific contract provisions between the manufacturer and purchaser.

Application

This standard is applicable to gear drives designed and rated in accordance with the following standards: ANSI/AGMA 6010-F97, Standard for Spur, Helical, Herringbone and Spiral Bevel Enclosed Drives; ANSI/AGMA 6011-H97, Practice for High Speed Helical and Herringbone Gear Units; ANSI/AGMA 6019-B89, Standard for Gearmotors Using Spur, Helical, Herringbone, Straight Bevel or Spiral Bevel Gears; and ANSI/AGMA 6021-G89, Standard for Shaft Mounted and Screw Conveyor Drives Using Spur, Helical and Herringbone Gears.

ANSI/AGMA 6025-D98 applies to only those gear units which are lubricated in accordance with manufacturer's recommendations and tested in a system of connected rotating parts free from serious critical speeds, torsional vibrations or overloads as tested at the gear unit manufacturer's facility.

Where performance of actual shop tests to determine sound level is required, it shall be the responsibility of the purchaser to so state in his inquiry and order.

NOTE: The gear unit is only part of the total acoustic system which includes, in addition to the gear unit, the prime mover, driven equipment, gear unit mounting, foundation and acoustic environment. Each of these might affect the measured level of sound emitted from the gear unit. Unless otherwise agreed, the gear manufacturer's responsibility is to ensure that the level of noise emitted from a gear unit under the test conditions in his factory is within contractually specified or negotiated limits.

Special contractual considerations are discussed in annex D.

CAUTION: Compliance with this standard does not constitute a warranty of the measured gear unit sound levels under installed field service conditions.