Fields of application:Benefits:

MSR and MSA series locknuts areprecision nuts whose system-specific benefits can be used in every mecha- nical engineering sector. Where fast- spinning and/or dynamic stressed industrial spindles are used, the precision of the locknuts, their axial rigidity and high level of dynamic safety ensure opti- mum results for the entire bearingThe locknut is designed rotationallysymmetric without any imbalancing properties such as grooves, slots etc. The clamping screws distributed evenly around the centre (in a circle) together with the ideally configured elastic diaphragm of the locknut will result in even clamping forces all around the spindle thread. These clamping forces ensure intensive contact between the thread flanks of the professional nut and spindle, resulting in a high degree of axial rigidity around the entire periphery of the nut (elimi- nating soft spots). Adaptation of little imperfect shapes and surface com- pression on the thread occurring in conventional nuts as a result of sub- jection to operating loads are antici- pated by the design feature of the SPIETH locknuts. The resulting system. Repeated precision adjust-ments can be carried out using the locknut on the same spindle. The locknut can simply and precisely assume the function of shaft collar or lay-on surface. Even if there are only demands for a high security of the connection, these locknuts can be ideally applied. reduction in axial pretension caused by the named anticipation is simply compensated during mounting by applying a higher moment of preten- sion. The end face of the locknut can be aligned until completely free of play. Little errors in the run-out accu- racy of the connecting components can be compensated – if necessary– by individual adjustment of the clam- ping screws. Unilateral tensions areoften the cause of poor concentricityin mounted spindles. Despite a spindle thread produced to ISO stan- dards, flank play can be restricted during mounting right down to zero, so permitting precision adjustment of the locknut's contact surface.

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