By replacing critical components annually

Is a minimum operating pressure required

combined with the robust housing

The keyed shaft attachment is enhanced by an external key on the bushing

specifically configured for power closed/spring return open (PC/SRO) operation

Browning 2BK52X 1 3/8 Sheave 320819-301 By replacing critical components annuallyThe Browning 2BK52X 1 3 8 is a heavy duty cast iron sheave engineered for high torque power transmission in commercial HVACR and industrial blower applications. This two groove BK sheave features a static balance to ensure vibration free performance at high RPMs, extending the service life of motor bearings and belts. Designed with a 4. 95 inch outside diameter and a 1 3 8 inch fixed bore, it provides precise alignment for dual belt drive systems.