thermal fitting calculations as per din 7190

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Calculations - Thermal Fitting - DIN 7190 Sheet 2 of 6

Inputs:Description Symbol Units HSIS Gear Mech Pump Joint 3

Nominal Diameter of the Joint [mm] 750 70

[mm] 749.925 69.985

[mm] 750.000 70.000

[mm] 750.088 70.002

[mm] 750.138 70.015

α 1.15E-05 1.10E-05 Material

DF

Lower deviation of the joint diameter DF for the outer part (Hub) AuA

Upper deviation of the joint diameter DF for the outer part (Hub) AoA

Lower deviation of the joint diameter DF for the inner part (Shaft) AuI

Upper deviation of the joint diameter DF for the inner part AoI

Coefficient of linear expansion of part to be heated [1/ºC]

Co. of linear expansion - α - 1/ºC

Adhesion co. , νll

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Steel 1.10E-05 0.11

Calculations SG iron 1.25E-05 0.1Assembly by Thermal Fitting Cast Iron 1.05E-05 0.12Description Symbol Units Aluminium 2.20E-05 0.07Max interference Ug [mm] 0.213 0.030 Bronze CuSn6 1.70E-05 0.07

V 52 68Required temperature of the part while Joining, above ambient temperature [ºC]