Seven Eighths Inch Bore Solid Pulley With Four Inch Outside Diameter For V Belts Size A Four L Five L Cast Iron Construction One Groove Precision Machined With Hex Set Screws And Keyway AK4078 For Reliable Belt Drive And Easy Replacement

Solid bore pulley, single pulley, 7/8 in bore, 4 in OD
✔️ OD 4 in, bore 7/8 in, 1 groove, cast iron, 4L/5L belts

This sturdy solid pulley is a single-piece cast iron component designed for V-belt drives. It fits standard 4L and 5L belt sizes and uses a 7/8 in bore on a shaft, delivering dependable power transfer in shop equipment, conveyors, and other small machinery.

✅ Bore: 7/8 in (22.23 mm)
✅ Outside diameter: 4 in (101.6 mm)
✅ Belt compatibility: 4L, 5L, 1 groove
✅ Material: cast iron for strength and long life
✅ Mounting: hex set screws and keyway for secure fit

💡 What is a pulley used for in a belt drive system?

A handy, general overview of its role in power transmission.

- Transfers motion between rotating shafts via belts
- Keeps belt alignment and tension for smooth operation
- Works with common V-belt sizes like 4L and 5L
- Made from durable cast iron for long service life