One Groove Cast Iron Pulley With 0.75 Inch Bore And 4.25 Inch Outer Diameter For V Belts 4L And 5L, Solid Machined Pulley With Finished Bore, Standard Keyseat, And Static Balancing For Smooth Performance

Single 4.25 in cast iron pulley, 3/4 in bore
✔️ Pack: 1 piece, fits 4L/5L belts, single groove

This is a single-groove cast iron pulley designed for belt drives using V-belts in 4L or 5L sizes. It is commonly used on small machines, woodworking tools, and light conveyors where a reliable, rigid drive is needed.

✅ Outside diameter: 4.25 in (108 mm)
✅ Bore: 0.75 in (19.05 mm)
✅ Material: cast iron, precision machined, statically balanced
✅ Belt compatibility: 4L, A, 5L, B belts; one groove

💡 What is a belt pulley used for in compact belt-drive systems?
In practical terms, a belt pulley transfers rotation from the driver to the driven shaft and helps maintain belt tension and alignment in compact setups.
- transfers torque efficiently in narrow belt drives
- cast iron provides rigidity and long life
- single groove supports common belt types such as 4L/5L