Description
Product Overview
The CMFG V‑belt pulley is engineered from high‑quality cast iron, providing exceptional strength and resistance to wear. With an outside diameter of 3.55 inches and a fixed 3/4 inch bore, it fits a wide range of industrial machines. The single‑groove design accommodates standard “4L” or “A” and “5L” or “B” V‑belts, ensuring smooth power transfer and minimal slip. Each pulley is statically balanced and receives a rust‑spraying finish for extended service life.
Usage
Designed for heavy‑duty applications, this pulley excels in conveyor systems, material handling equipment, mixers, and other machinery that rely on reliable belt drive performance. Its classic V‑belt profile integrates seamlessly into existing drive designs, making it a versatile choice for manufacturers, maintenance technicians, and plant engineers seeking dependable motion control.

Why Choose Us
CMFG combines decades of engineering expertise with rigorous quality control. Each pulley undergoes precise casting, machining, and balancing processes, guaranteeing dimensional accuracy and consistent performance. Our rust‑resistant coating protects against corrosion in harsh environments, and we back the product with a one‑month worry‑free return service.
Key Features
- Durable cast iron construction for high load capacity
- Fixed 3/4 inch bore ensures secure shaft fit
- Single groove compatible with standard V‑belts (4L/A, 5L/B)
- Statically balanced and rust‑sprayed for long‑term reliability
- Easy installation with standard keyseats and finished bore
FAQ
What belt sizes are compatible with this pulley?
The pulley is designed for standard “4L” or “A” and “5L” or “B” V‑belts, fitting most common industrial V‑belt applications.
Can this pulley be used with a rotating shaft?
Yes, the fixed 3/4 inch bore provides a secure fit for rotating shafts, and the standard keyseat ensures proper torque transmission.
Is the pulley suitable for outdoor use?
The rust‑sprayed cast iron finish offers good corrosion resistance, making it suitable for outdoor or damp environments when properly maintained.
What is the return policy?
CMFG offers a smooth, worry‑free return service within one month of purchase if the product does not meet your expectations.
How do I install the pulley?
Align the bore with the shaft, insert the key into the keyseat, and secure with set screws if provided. Ensure the belt is properly tensioned before operation.




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