Solid Sheave Pulley For V Belts 3L And 4L With Shaft Hole Keyway And Push Screw Machining Standardization Inch Size Japanese Standard Quality Consistent Casting To Machining High Precision Industrial Pulley

1-Piece 2-A-1 Solid V-Belt Pulley for 3L/4L Belts
✔️ One-pc solid pulley for 3L/4L V-belts, bore 50.8mm

The 2-A-1 (50-A-1) solid sheave pulley is a single-piece V-belt pulley designed for belts sized 3L and 4L. It features a standardized shaft hole, keyway, and push screw machining to ensure easy mounting and interchangeability, aligning with Japan's pioneering inch-size standard. From casting to final surface treatment, production stays consistent with tight balance tolerances according to JIS B 1854-1987 for general-use V-pulleys.

✅ Bore: 50.8 mm (2.00 in)
✅ Groove shape: A 11U
✅ Grooves: 1
✅ Machining: Shaft hole, keyway, push screw standardized
✅ Balance: Outer circumference imbalance 0.2% of pulley mass or 3 g, whichever is larger
✅ RoHS: 10
✅ Interchange: Japan's first standard inch-size product for 3L/4L belts

💡 What is a solid sheave pulley used for in V-belt drive systems?

This handy drive component keeps belts aligned and torque transfer smooth. - Solid V-belt pulley for 3L/4L belts with 50.8 mm bore and A11U groove
- Standard inch-size format from Japan for quick replacement
- Balanced per JIS B 1854-1987 to minimize vibration in belt drives