: (d_ref=30) mm, (z=20), α=30°, fit H/h, grade 6 Expected: m=1.5, (d_ae=33.3) mm, (d_fe=26.25) mm, tooth thickness nominal 2.356 mm, allowance 0 to -0.032 mm.
DIN 5480 uses specific addendum and dedendum coefficients to ensure compatibility between the shaft (W) and hub (N): Root Diameter (Shaft, df1d sub f 1 end-sub ): Tip Diameter (Hub, da2d sub a 2 end-sub ): Root Diameter (Hub, df2d sub f 2 end-sub ): 4. Calculate Inspection Dimensions din 5480 calculator
DIN 5480 tolerances account for form errors (lead error, profile error). : (d_ref=30) mm, (z=20), α=30°, fit H/h, grade
: [ d_ae = d + 2 \cdot m \cdot h_aP^* ] with (h_aP^* = 0.45) for side fit (DIN 5480-1 Table 1). : [ d_ae = d + 2 \cdot m \cdot h_aP^* ] with (h_aP^* = 0
DIN 5480 is the German standard for involute splines with a reference diameter instead of a pitch diameter as in ISO 4156. It is widely used in automotive, aerospace, and general mechanical drive systems.