Cast Iron Pulley Sheave For Small Machinery, 2.5 Inch Outside Diameter, 0.75 Inch Bore, Single Groove V Belt Style A, Keyway Compatible Shaft Pulley, Supports 3L 4L 5L Belts, 2.5D 0.75B, Durable Cast Iron Construction, Replacement Part

This single V-belt pulley is a cast iron part with a 3/4 in bore, built for compact belt-drive setups. Ideal for small motors, hobby machines, and light-duty conveyors, it accepts common belt sizes (3L/4L/A) and includes a keyway for secure shaft mounting.

✅ Outside diameter 2.5 in (63.5 mm)
✅ Bore 3/4 in (19.05 mm)
✅ Length through bore 1.1563 in (29.38 mm)
✅ Belt compatibility 3L, 4L, A (V-style)
✅ Keyway 3/16 x 3/32 in (4.76 x 2.38 mm)
✅ Material Cast iron; single pulley with set screw

💡 What is a V-belt drive pulley used for and how do you pick the right bore and belt size? A quick guide to pulley specs for a reliable drive.
- Bore size matters for shaft fit and clamp load
- OD and belt size affect speed and torque
- Cast iron provides rigidity and longevity
- Verify belt compatibility: 3L, 4L, or A