Durable 4 inch cast iron dual groove pulley designed for B5L belts and a 1-3/8 inch shaft, featuring a solid steel H bushing for a secure, wobble-free drive in air compressors and other belt driven equipment

4 Inch Cast Iron Dual Groove Pulley for B5L Belts
✔️ 4" OD dual groove, 1-3/8" H bushing, single unit

This heavy-duty dual-groove cast iron pulley is designed for air compressors and other belt-driven equipment. It accepts B5L belts and fits a 1-3/8" shaft, using a solid steel H bushing for a tight, secure mount.

✅ Outside diameter: 4"
✅ Dual grooves for B and 5L belts (5L)
✅ Includes 1-3/8" H bushing (solid steel)
✅ 2-piece pulley design for secure shaft mounting
✅ Cast iron construction for durability under heat and stress
✅ Belt compatibility: B5L; A/4L may sit lower in groove

💡 What is a dual-groove pulley used for in belt drive systems?

This handy part lets you run two belts from one shaft, improving load handling and alignment.

• Helps synchronize two belts for better power transfer
• Reduces belt wear by keeping paths aligned
• Best with 5L/B belts on compatible shafts
• Solid cast iron with a secure steel H-bushing