Description
Product Overview
The CMFG V‑belt pulley is engineered for demanding industrial environments. With a 3.15 inch outer diameter and a fixed 1‑1/8 inch bore, this pulley delivers a stable, low‑vibration connection for power transmission. Constructed from high‑grade cast iron, it offers superior strength, wear resistance, and rust‑sprayed protection. The two‑groove profile accommodates standard “4L”/”A” and “5L”/”B” V‑belts, making it a versatile replacement for a wide range of machinery.
Usage
Designed for material handling systems, conveyor drives, and general mechanical applications, this pulley fits seamlessly into existing drive trains. It is ideal for factories, warehouses, and processing plants where reliable torque transfer is critical. 
Why Choose Us
CMFG combines decades of engineering expertise with rigorous quality control. Each pulley is statically balanced and undergoes a rust‑spraying finish to extend service life. Our standard keyseats and finished bore ensure easy installation and consistent alignment, reducing downtime. Backed by a one‑month worry‑free return service, you can trust the durability and performance of every unit.
Key Features
- Robust cast‑iron construction for long‑lasting durability
- Fixed 1‑1/8″ bore ensures precise shaft fit and alignment
- Two‑groove design compatible with common V‑belt profiles
- Statically balanced to minimize vibration and wear
- Rust‑sprayed finish protects against corrosion in harsh environments
FAQ
What belt sizes are compatible with this pulley?
The two‑groove profile is designed for standard “4L”/”A” and “5L”/”B” V‑belts, which are widely used in industrial drive systems.
Can this pulley be used with a variable speed drive?
Yes, the static balance and sturdy cast‑iron material make it suitable for variable speed applications, provided the belt tension is correctly set.
Is the bore type fixed or adjustable?
The bore is a fixed 1‑1/8 inch size, offering a secure, slip‑free connection to matching shafts.
How do I install the pulley?
Align the keyseat with the shaft key, slide the pulley onto the shaft, and secure it with the set screw. Ensure the belt is properly tensioned before operation.
What warranty does CMFG provide?
CMFG offers a one‑month worry‑free return service for any defects or installation issues, reflecting confidence in product quality.




MinerGuy V-Belt Pulley Cast Iron 5/8 Bore Industrial Use
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