ÖNORM EN ISO 10441

1.1 This International Standard specifies the requirements for couplings for the transmission of power between the rotating shafts of two machines for service in special purpose applications in the petroleum and natural gas industries. Such applications will typically be in large and/or high speed machines in services that may be required to operate continuously for extended periods, are often unspared and are critical to the continued operation of the installation. By agreement, it may be used to apply to other services. NOTE Couplings for general purpose, less critical applications are covered in ISO 14691. 1.2 Couplings covered by this International Standard are designed to accommodate parallel (or lateral) offset, angular misalignment and axial displacement of the shafts without imposing unacceptable mechanical loading on the coupled machines. It is applicable to gear, metallic flexible-element, quillshaft and torsionally resilient-type couplings. It is not applicable to other types, such as clutch, hydraulic, eddy-current, rigid, radial spline, chain and bellows types. 1.3 This International Standard is applicable to the design, materials of construction, manufacturing quality, inspection and testing of couplings. It does not include criteria for the selection of coupling types for specific applications. NOTE It is strongly recommended that, when users fit new couplings to existing equipment, which are different from those originally fitted, they consult the vendor who originally had unit responsibilty for the equipment train, to ensure proper application of this International Standard. It will generally be necessary to recalculate the rotor dynamics of the train.