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  • BSI
    BS ISO 21940-32:2012 Mechanical vibration. Rotor balancing - Shaft and fitment key convention
    Edition: 2012
    $435.35
    / user per year

Description of BS ISO 21940-32:2012 2012

This part of ISO 21940 specifies one convention for balancing the individual components (shaft and fitments) of a keyed rotor assembly. This provides compatibility of all balanced components so that when they have been assembled the overall balance tolerance and/or vibration limit for the rotor assembly is met.

This part of ISO 21940 specifies that half-keys be used when balancing the individual components of a keyed rotor assembly. It also specifies a marking of the components balanced in accordance with the key convention used.

This part of ISO 21940 applies to rotors balanced in a balancing machine, in their own bearings or in situ. The key convention can also be applied when measuring the residual unbalance and/or vibration of rotors with keyways, but to which fitments have not yet been assembled.

In addition to applying to keys of constant rectangular or square cross-section mounted parallel to the shaft centreline, this part of ISO 21940 also applies to keys mounted on tapered shaft surfaces, to woodruff, gibhead, dowel and other special keys. The principle of the half-key convention is applied as is appropriate to the particular shape and location of the special key.



Standard NumberBS ISO 21940-32:2012
TitleMechanical vibration. Rotor balancing - Shaft and fitment key convention
StatusUnder Review
Publication Date2012-04-30
ReplacesBS 7130:1989
Identical National Standard OfISO 21940-32:2012
DescriptorsMechanical components, Shafts (rotating), Rotors (mechanical), Balancing, Rotating parts, Marking, Keys (engineering)
ICS21.120.40 Balancing and balancing machines, 21.120.10 Shafts
CommitteeGME/21/5
ISBN978 0 580 71415 3
PublisherBSI
Pages28

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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