7/8 Inch Bore V Belt Pulley With 3.95 Inch Outside Diameter One Groove Cast Iron Sheave For A AX 3L 4L V Belts Statically Balanced Rust Resistant Finish Standard Keyseat 3/16 X 3/32 For Industrial Drives AK4178 Pulley

7/8 Bore V-Belt Pulley, 3.95 in OD Cast Iron
✔️ 1 groove, 7/8 in bore, 3L/4L AX belts, cast iron ready

This single V-belt pulley has a 7/8 inch bore (22.23 mm) and a 3.95 inch outside diameter (100.33 mm). It supports belts in sections A, AX, 3L, and 4L for reliable power transmission on motors, compressors, and shop equipment. Cast iron construction is static-balanced and coated to resist rust for long service life.

✅ Outside diameter: 3.95" (100.33 mm)
✅ Bore: 7/8" (22.23 mm)
✅ Groove: 1, compatible with A AX 3L 4L belts
✅ Keyseat: 3/16" x 3/32" (4.76 mm x 2.38 mm)
✅ Material: cast iron, statically balanced
✅ Finish: surface anti-rust sprayed
✅ Screws included: 2 mounting screws
✅ Application: power transmission for compressors, motors, table saws

💡 What is a V-belt pulley used for in power transmission systems?

Here's a handy, concise explanation to help you understand how these pulleys support drive systems: - They transfer rotary motion between shafts via a V-belt drive - Match bore size and groove count to your shaft and belt section (A, AX, 3L, 4L) - Keep pulleys aligned and belts properly tensioned to maximize life