The reversible rotation feature and dual mounting options—including shell-band and thru-bolt configurations—ensure seamless installation in tight blower housings

Industrial Durability: Specifically rated for the high-torque and high-pressure demands of commercial water regulation

maintaining operational integrity during high-duty cycles

The P499 series utilizes thin-film sensing technology to maintain signal stability across a wide temperature range

The motor is configured for counter-clockwise (CCW) rotation when viewed from the lead/shaft end

Carrier KR51BF415 Motor Pulley 321894-709 The reversible rotation feature andThe Carrier KR51BF415 Motor Pulley is a precision engineered fixed bore drive component designed for specific Carrier, Bryant, and Payne air handling units and rooftop systems. Featuring a 7 8 inch bore and a 4. 15 inch outside diameter, this Type A belt pulley (also compatible with AX section belts) provides a consistent 1: 1 or reduced drive ratio to maintain precise blower wheel RPMs. Constructed from high grade cast iron, it offers superior