Mekaniska system och komponenter: allmänt

Kommittébeteckning: SIS/TK 111 (Vibration och stöt)
Källa: ISO
Svarsdatum: den 31 aug 2020
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ISO 21940-11:2016 establishes procedures and unbalance tolerances for balancing rotors with rigid behaviour. It specifies a) the magnitude of the permissible residual unbalance, b) the necessary number of correction planes, c) the allocation of the permissible residual unbalance to the tolerance planes, and d) how to account for errors in the balancing process. NOTE In ISO 21940-14, the assessment of balancing errors is considered in detail. Fundamentals of rotor balancing are contained in ISO 19499 which gives an introduction to balancing. ISO 21940-11:2016 does not cover the balancing of rotors with flexible behaviour. Procedures and tolerances for rotors with flexible behaviour are dealt with in ISO 21940-12.

Kommittébeteckning: SIS/TK 111 (Vibration och stöt)
Källa: ISO
Svarsdatum: den 31 aug 2020
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This part of ISO 21940-14 specifies the requirements for:

a) identifying errors in the rotor balancing process;

b) assessing the identified errors;

c) taking the identified errors into account;

d) evaluating the residual unbalance in any two correction planes

Kommittébeteckning: SIS/TK 103 (Fästelement)
Källa: CEN
Svarsdatum: den 1 sep 2020
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This document specifies the characteristics of hexagon head bolts, in steel and stainless steel, with metric coarse pitch threads M1,6 to M64, and with product grades A and B.

NOTE If in certain cases other specifications are requested, property classes and stainless steel grades can be selected from ISO 898-1 or ISO 3506-1, and dimensional options from ISO 888 or ISO 4753.

Kommittébeteckning: SIS/TK 103 (Fästelement)
Källa: CEN
Svarsdatum: den 1 sep 2020
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This document specifies the characteristics of hexagon head bolts with reduced shank (shank diameter  pitch diameter), in steel and stainless steel, with metric coarse pitch threads M3 to M20, and with product grade B.

NOTE 1 If in certain cases other specifications are requested, property classes and stainless steel grades can be selected from ISO 898-1 or ISO 3506-1, and dimensional options from ISO 888 or ISO 4753.

NOTE 2 For hexagon head bolts with full shank, see ISO 4014.

Kommittébeteckning: SIS/TK 103 (Fästelement)
Källa: CEN
Svarsdatum: den 1 sep 2020
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This document specifies the characteristics of hexagon head bolts, in steel, with metric coarse pitch threads M5 to M64, and with product grade C.

NOTE If in certain cases other specifications are requested, property classes can be selected from ISO 898-1 and dimensional options from ISO 888 or ISO 4753.

Kommittébeteckning: SIS/TK 103 (Fästelement)
Källa: CEN
Svarsdatum: den 1 sep 2020
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This document specifies the characteristics of hexagon head screws, in steel and stainless steel, with metric coarse pitch threads M1,6 to M64, and with product grades A and B.

NOTE If in certain cases other specifications are requested, property classes and stainless steel grades can be selected from ISO 898-1 or ISO 3506-1, and dimensional options from ISO 888 or ISO 4753.

Kommittébeteckning: SIS/TK 103 (Fästelement)
Källa: CEN
Svarsdatum: den 1 sep 2020
Se merSe mindre
 

This document specifies the characteristics of hexagon head screws, in steel, with metric coarse pitch threads M5 to M64, and with product grade C.

NOTE If in certain cases other specifications are requested, property classes can be selected from ISO 898-1, and dimensional options from ISO 888 or ISO 4753.

Kommittébeteckning: SIS/TK 103 (Fästelement)
Källa: CEN
Svarsdatum: den 1 sep 2020
Se merSe mindre
 

This document specifies the characteristics of hexagon head screws, in steel and stainless steel, with metric fine pitch threads M8×1 to M64×4, and with product grades A and B.

NOTE If in certain cases other specifications are requested, property classes and stainless steel grades can be selected from ISO 898-1 or ISO 3506-1, and dimensional options from ISO 888 or ISO 4753.

Kommittébeteckning: SIS/TK 103 (Fästelement)
Källa: CEN
Svarsdatum: den 1 sep 2020
Se merSe mindre
 

This document specifies the characteristics of hexagon head bolts, in steel and stainless steel, with metric fine pitch threads M8×1 to M64×4, and with product grades A and B.

NOTE If in certain cases other specifications are requested, property classes and stainless steel grades can be selected from ISO 898-1 or ISO 3506-1, and dimensional options from ISO 888 or ISO 4753.