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BS 6861-1:1987

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Mechanical vibration. Balance quality requirements of rigid rotors Method for determination of permissible residual unbalance
Available format(s)

Hardcopy , PDF

Superseded date

05-09-2005

Language(s)

English

Published date

30-06-1987

National foreword
Committees responsible
Method
0 Introduction
1 Scope and field of application
2 References
3 Pertinent aspects of the balancing problem
4 Permissible unbalance related to rotor mass
5 Quality grades relating service speed and
    permissible residual specific unbalance
6 Determination of balance quality requirements
7 Allocation of permissible residual unbalance to each
    correction plane on the basis of Uper
8 Determination of the residual unbalances
9 Sources of errors in balancing
Annex
    Example for the general method described in 7.3.3.1
    for two-plane balancing
Tables
1 Balance quality grades for various groups of
    representative rigid rotors
2 Typical examples of recommended deviations
Figures
1 Different representations of the same state of
    unbalance of a rigid rotor
2 Maximum permissible residual specific unbalance
    value corresponding to various balance quality
    grades
3 Rotor dimensions to be used for simplified method
4 Rotor with overhung discs at both ends
5 Rotors with couple correction planes I and II at a
    distance b less than one-third of the bearing span l
6 Rotor dimensions to be used for general method
    calculations
7 Determination of the reponse of the permissible
    residual unbalance to a trial mass
8 Test procedure for determining the residual
    unbalance in one plane
9 Error sources in end-drive elements
10 Rotor dimensions

Gives methods for the determination of permissible residual unbalance and for allocating it to the correction planes.

Committee
GME/21
DocumentType
Standard
Pages
24
PublisherName
British Standards Institution
Status
Superseded
SupersededBy
Supersedes

Standards Relationship
ISO 1940-1:2003 Identical

DEFSTAN 02-327/3(2006) : 2006 REQUIREMENTS AND GUIDANCE FOR THE PROCUREMENT OF PUMPS FOR AUXILIARY SYSTEMS
DEFSTAN 02-305/2(2003) : 2003 REQUIREMENTS FOR GEARING - MAIN PROPULSION
DEFSTAN 02-327/2(2001) : INTERIM REQUIREMENTS AND GUIDANCE FOR THE PROCUREMENT OF PUMPS FOR AUXILIARY SYSTEMS
DEFSTAN 02-309/2(2002) : 2002 REQUIREMENTS FOR GAS TURBINES
DEFSTAN 02-315/3(2005) : 2005 AIR COMPRESSORS
BS 848-6:1989 Fans for general purposes Method of measurement of fan vibration
BS 3790:1995 Specification for endless wedge belt drives and endless V-belt drives
DEFSTAN 02-305/1(2000) : 2000 REQUIREMENTS FOR GEARING - MAIN PROPULSION

ISO 2953:1999 Mechanical vibration Balancing machines Description and evaluation
ISO 5406:1980 The mechanical balancing of flexible rotors
ISO 1925:2001 Mechanical vibration Balancing Vocabulary
ISO 5343:1983 Criteria for evaluating flexible rotor balance
ISO 2371:1974 Field balancing equipment Description and evaluation

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