Force Required for Press Fit Cylinder and Hub Design Calculator  
Blocks shown as light blue are editable  
hub diameter do =
 
contact surface diameter, in compression dc =
length of hub and shaft contact l =  
contact pressure applied pc =  
total change in diameter δ =  
Coefficient of friction μ = -  
Temperature t1 =  
coefficient of linear thermal expansion, α =  
Calculated Results   
axial force to press shaft into hub Fa = Eq. 1
axial force press steel shaft into cast-iron hub F =  Eq. 2a, b
axial force to press steel shaft in steel hub F = Eq. 3a, b
transmitted torquefit  without slipping Mt = Eq. 4
temp. which the shaft must be heated t2 ≥ Eq. 5
   
Conversion (rounding is imperfect)  
From Newton (N) to tonf =  
From tonf to Newton (N) =  
From tonf to lbf =  
From lbf to tonf =