Optimized Mechanical Balance: Precision-ground 1045 steel construction minimizes shaft whip and harmonic vibration across all blower speeds

This 11 inch x 11 inch blower wheel (nominal) features a 1/2 inch bore with a set screw hub for secure mounting to the motor shaft

Verify 120V output from the control board before replacing to differentiate between a cracked element and a logic failure

Its robust construction ensures thermal stability and electrical integrity

To ensure a long service life and accurate readings

Lochinvar & A.O. Smith 100173792 Arm Assembly 323080-701 Optimized Mechanical Balance: Precision-ground 1045The Lochinvar & A. O. Smith 100173792 Arm Assembly is a critical OEM component designed for high efficiency burner management in commercial and residential gas fired systems. Engineered for precision and thermal stability, this gas air arm assembly ensures the correct orientation and alignment of the burner interface, which is essential for maintaining stoichiometric combustion and maximizing heat transfer. Built to withstand the harsh operating