Minimum 46 mm (in this case is equal to the nominal value) Maximum 49.6 mm ( in this case is equal to the nominal value) The fit and the centering accuracy are determined by the deviations of the space widths and thicknesses as well as by the tolerances achieved or specified. Reference diameter is not the Major or Minor diameter of the spline. This condition is met by making the reference diameter equal to the bore of the bearing and then modifying the profiles of the teeth of the hub and the shaft accordingly. External spline have lower case letters and internal splines have upper case lettersĭIN 5480 was structured to permit easy slip-fitting of components such as, for instance, ball or roller bearings. "h" The letter (h) represents the “Deviation Series” of the spline. The number (8) represents the “Tolerance Class” of the spline (Not tip and root diameters). W – stands for “Welle” and denotes a Shaft/External spline N – stands for “Nabe” and denotes a Hub/Internal splineĢ is the Module of the spline (size of the tooth)Ĩh is the Class of Fit. The tooth interlock of a shaft and hub splined connection is determined by the basic rack profile, the reference diameter, the module and the number of teeth. This is a tutorial explaining some concepts on dimensions of the splines ruled by DIN 5480 I will upload some tutorials about DIN 5480 dimensions.
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