3BK34-7/8PD 3.55″ OD 7/8″ Finished Bore 3-Groove Cast Iron Sheave (A/B V-Belt Pulley)
The 3BK34-7/8PD is a heavy-duty 3-groove cast iron sheave engineered for reliable power transmission in commercial and industrial HVAC and machinery applications.
Key Specifications
Part / Model Number: 3BK34-7/8PD (3BK34-7/8)
Number of Grooves: 3
Outer Diameter (OD): 3.55 Inches
Bore Size: 7/8 Inch Finished Bore
Bore Type: Fixed Bore w/ Standard Keyway & Setscrews
Belt Section Compatibility: A, B, 4L, and 5L V-Belts
Manufactured from high-tensile Class 30 cast iron, the 3BK34-7/8PD is built to resist wear, heat, and distortion under continuous heavy loads. Equipped with a precision 7/8-inch factory-bored hub, integrated keyway, and dual threaded setscrews, this sheave provides a secure, slip-free lock on drive shafts. It is an ideal replacement pulley for commercial air handlers, HVAC blower drives, industrial compressors, electric motors, and agricultural machinery.
