Discover precision and reliability with our Interference Fit Calculator, designed to offer accurate assessments for engineers and designers. This intuitive tool streamlines the calculation of interference fits, ensuring optimal mechanical connection between components. By inputting essential parameters, users can efficiently determine the required press or shrink fit conditions for various materials. Enhance your project’s success by utilizing our calculator to achieve perfect contact pressure, minimize material stress, and ensure the longevity of your assemblies. Trust our Interference Fit Calculator for enhanced efficiency and accuracy in your mechanical designs.
Parameter Descriptions
da (mm): Outer diameter of the outer part (hub)
df (mm): Fitting diameter (interface diameter)
di (mm): Inner diameter of the inner part (shaft)
lf (mm): Fitting length (contact length)
μ: Coefficient of friction between mating surfaces
Ea (GPa): Elastic modulus of the outer part (hub)
Ei (GPa): Elastic modulus of the inner part (shaft)
νa: Poisson’s ratio of the outer part (hub)
νi: Poisson’s ratio of the inner part (shaft)
σsa (MPa): Yield strength of the outer part (hub)
σsi (MPa): Yield strength of the inner part (shaft)
N (kW): Power transmitted through the assembly
Kc: Overload coefficient for the motor
n (rpm): Rotational speed of the assembly
Ca: Surface roughness compensation for the outer part
Ci: Surface roughness compensation for the inner part
a: Temperature compensation coefficient
c: Assembly method compensation coefficient
ω (mm): Thermal expansion compensation
IT7 (mm): Standard tolerance grade 7
IT6 (mm): Standard tolerance grade 6
Calculator
Calculation Results
Transmitted Torque (T):
N·m
Minimum Pressure for Load Transmission (Pfmin):
MPa
Diameter Ratio of Outer Part (qa):
Diameter Ratio of Inner Part (qi):
Minimum Diameter Change of Outer Part (eamin):
mm
Minimum Diameter Change of Inner Part (eimin):
mm
Minimum Effective Interference (δemin):
mm
Minimum Interference Considering Flattening (δmin):
mm
Maximum Pressure for Outer Part (Pfamax):
MPa
Maximum Pressure for Inner Part (Pfimax):
MPa
Maximum Pressure for Assembly (Pfmax):
MPa
Maximum Transmitted Force (Ft):
N
Maximum Diameter Change of Outer Part (eamax):
mm
Maximum Diameter Change of Inner Part (eimax):
mm
Maximum Effective Interference (δemax):
mm
Initial Basic Interference (δb):
mm
Allowable Minimum Interference [δmin]:
mm
Allowable Maximum Interference [δmax]:
mm
