Finding the right double groove V-belt pulley can improve efficiency and reduce wear in motorized and mechanical systems. The following selection highlights five well-rated options from trusted brands, focusing on standard bore sizes, double-groove design, and compatibility with A, AX, 3L, and 4L belt profiles. Each entry includes key specifications to help you compare fit and performance at a glance.
| Product | Brand | Bore | Outside Diameter | V-Belt Compatibility |
|---|---|---|---|---|
| Saelno 2BK40-1-1/8 | Saelno | 1 1/8 in | 3.95 in | A, AX, B, BX, 4L, 5L |
| Saelno 2AK20-5/8 | Saelno | 5/8 in | 2 in | A, AX, 3L, 4L |
| QWORK 2AK3058 | QWORK | 5/8 in | 3.05 in | A, 3L, 4L (A & AX) |
| Saelno 2AK30-5/8 | Saelno | 5/8 in | 3.05 in | A, AX, 3L, 4L |
| QWORK 2AK2734 | QWORK | 3/4 in | 2.75 in | A, 3L, 4L (A & AX) |
Saelno 2BK40-1-1/8 Double Groove Pulley
Brand: Saelno. This double groove pulley features a 3.95 inch outside diameter and a 1 1/8 inch bore, making it compatible with A, AX, B, BX, 4L and 5L V-belts. The pulley includes a standard 1/4X1/8 keyseat to secure mounting and offers a robust cast iron construction for strength and wear resistance. Its 2-groove design provides versatility for multi-speed drive configurations in small to mid-size machines. Ideal for motor-driven applications requiring precise belt alignment and reliable power transfer.
Saelno 2AK20-5/8 Double Groove Pulley
Brand: Saelno. This 2-groove pulley has a 2 inch outside diameter and a 5/8 inch bore with a cast iron body. It is designed for V-Belts in sections A, AX, 3L and 4L. Features include standard keyseats (3/16X3/32) for secure mounting and a compact footprint suitable for compact drive systems or equipment with space constraints. Suitable for precise belt alignment and smooth operation in small machinery.
QWORK 2AK3058 Double Groove Pulley/Sheave
Brand: QWORK. This 3.05 inch OD, 5/8 inch bore fixed-bore pulley fits A, 3L and 4L V-Belts (A & AX). The two-groove design supports dual-belt drives with reliable rigidity. Cast iron construction provides durability and resistance to wear and deformation under typical loads. Suitable for small power transmission setups requiring consistent belt tracking and simple mounting.
Saelno 2AK30-5/8 Double Groove Pulley
Brand: Saelno. This double-groove pulley offers a 3.05 inch outside diameter with a 5/8 inch bore, designed for A, AX, 3L and 4L V-Belt systems. Cast iron construction provides rigidity and wear resistance, while 2 grooves support multi-belt arrangements. It includes standard keyseats (3/16X3/32) for secure mounting and alignment, making it suitable for compact drive assemblies in machines and equipment needing dependable belt control.
Saelno 2AK30-3/4 Double Groove Pulley
Brand: Saelno. This 3/4 inch bore, 3.05 inch outside diameter double groove pulley is intended for A AX 3L and 4L V-Belt configurations. Cast iron construction and standard keyseats enhance mounting reliability. The 2-groove design enables dual-belt drive applications, improving power transmission efficiency in compact machinery where space is at a premium.
Buying Guide: Key Considerations For Selecting a Double V-Belt Pulley
- Bore size compatibility: Ensure the bore matches your shaft diameter and that you can secure the pulley with a compatible hub or set screw.
- Outside diameter and belt section: Verify the pulley OD aligns with your belt profile (A, AX, 3L, 4L) to maintain correct belt tension and alignment.
- Number of grooves: Double grooves support two belts; confirm your drive system requires dual-belt power transmission and whether staggered or parallel belt arrangement is preferred.
- Material and durability: Cast iron is common for rigidity and wear resistance, but consider aluminum or other materials if weight reduction or corrosion resistance is a priority.
- Keyways and mounting: Check for standard keyseats and keyway dimensions to ensure accurate axial alignment and preventing slippage under load.
- Application context: Look at the intended load, operating speed, and belt type to ensure the pulley matches A, AX, 3L, or 4L belt standards for reliable operation.
- Quality and finish: Inspect for proper finish, bearing support (where applicable), and leakage resistance in pumps or machinery exposed to fluids or dust.
When selecting a double groove V-belt pulley, the goal is to balance fit, durability, and efficiency within your machine’s constraints. The listed options provide a range of bore sizes, outer diameters, and belt compatibilities, enabling you to match most common compact drive systems used in workshops, DIY projects, or light industrial equipment.