Trane SHF3136 Shaft 321702-401 Optimized Efficiency: The 3000 RPM

Optimized Efficiency: The 3000 RPM speed rating ensures high-velocity venting

requiring a minimum differential of 5 PSI for proper diaphragm actuation

using an authentic Lennox 21655 ensures that the bore dimensions and keyway alignment meet factory specifications

The spring return action is fixed as Normally Closed (NC) for this specific model

making it highly adaptable for various HVACR hardware replacements

Trane SHF3136 Shaft 321702-401 Optimized Efficiency: The 3000 RPMThe Trane SHF3136 Shaft is a precision engineered 21. 9x1 indoor fan shaft designed for heavy duty commercial and residential HVAC applications. Measuring exactly 21. 90 inches in length with a 1 inch diameter, this OEM blower shaft serves as the critical mechanical link between the drive motor and the blower wheel assembly. Built to handle high rotational torque, the Trane SHF3136 ensures stable fan alignment, reducing vibration that can lead to