🔍 Key Concepts

• Interference fit between bearing and shaft means the bearing bore is slightly smaller than the shaft diameter at normal temperature • Thermal mounting relies on differential expansion or contraction between parts to allow assembly • Consider safety, control of temperature, and risk of damaging the bearing or changing its metallurgy

💭 Think About

• Which part do you normally change the temperature of for an interference fit: the bearing, the shaft, or either one? Why? • For a precision roller bearing, which heating or cooling method allows controlled, uniform temperature change without creating hot spots or condensation? • Think about which method might risk altering the heat treatment of the bearing or shaft, or introducing moisture or cracks.

✅ Before You Answer

• Which option gives uniform, controllable temperature across the whole bearing or shaft surface? • Which method is commonly recommended in industry for mounting interference-fit bearings? • Eliminate any method that might create thermal shock, localized overheating, or structural damage to the bearing.