GB/T 6404.1-2005: Acceptance code for gear units -- Part 1: Test code for airborne sound

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Scope

This Part of GB/T 6404 specifies the instructions and standardized conditions necessary
for the determination of the airborne sound emission of gear units and gearmotors. It
also specifies the allowed measurement methods, together with the operating and
mounting conditions used for the test.
The emission characteristics include emission sound pressure levels at specified
positions and the sound power level. The determination of these quantities is necessary
for
a) manufacturers of gear units or gearmotors, in order that they may be able to
declare the emitted sound,
b) for comparing the sound emitted by gear units and gearmotors under service
operation, and
c) for the purpose of noise control at the design stage.
This Part of GB/T 6404 has the aim of ensuring, with its use, the reproducibility of the
determination of the airborne sound emission characteristics within specified limits
determined by the grade of accuracy of the basic measurement method used. The sound
measurement methods allowed by this Part of GB/T 6404 are engineering methods
(grade 2) and survey methods (grade 3).

Basic Data

Standard ID	GB/T 6404.1-2005 (GB/T6404.1-2005)
Description (Translated English)	Acceptance code for gear units -- Part 1: Test code for airborne sound
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	J17
Classification of International Standard	21.200
Word Count Estimation	41,471
Date of Issue	2005-09-19
Date of Implementation	2006-04-01
Older Standard (superseded by this standard)	GB/T 6404-1986
Adopted Standard	ISO 8579-1-2002; IDT
Regulation (derived from)	Announcement of Newly Approved National Standards No. 12 of 2005 (total 86)
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine of the People Republic of China, China National Standardization Administration Committee
Summary	This standard specifies: Identify the gear unit and with a motor gear issued -, airborne noise the necessary instructions and standard conditions. Combined for testing the operating conditions and installation conditions. Also gives allowed measuring methods.