NEN EN 50347 : 2001
Current
The latest, up-to-date edition.
GENERAL PURPOSE THREE-PHASE INDUCTION MOTORS HAVING STANDARD DIMENSIONS AND OUTPUTS - FRAME NUMBERS 56 TO 315 AND FLANGE NUMBERS 65 TO 740
12-01-2013
1 Scope
2 Normative references
3 Letter symbols and dimensional sketches
3.1 Letter-symbols for dimensions
3.2 Dimensional sketches
4 Letters for frame sizes and flange numbers
5 Location of the terminal box
5.1 Machines with feet
5.2 Machines with flange only
6 Position of holes in the mounting flange (when
machine also has feet)
7 Fixing dimensions and tolerances
7.1 Foot-mounted machines
7.2 Flange-mounted machines
7.3 Shaft end dimensions
7.4 Parallelity of shaft to foot-face
7.5 Parallelism of keyway to shaft axis
7.6 Lateral displacement of keyway
8 Methods of measurement
8.1 Shaft extension run-out
8.2 Concentricity of spigot and shaft
8.3 Perpendicularity of mounting face of flange to shaft
8.4 Parallelity of shaft to foot-face
8.5 Parrallelism of keyway to shaft axis
8.6 Lateral displacement of keyway
9 Relationships frame sizes - shaft extensions - rated
outputs - flange numbers
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