The Stainless Steel Swivel Pulley Block is a heavy-duty lifting tool designed to change the direction of force while preventing rope entanglement. Unlike fixed pulleys, our Stainless Steel Swivel Pulley Block features a 360-degree rotating top eye, ensuring that your rope, wire, or cable runs smoothly without twisting or knotting, even under dynamic loads.
Product Overview: Precision-cast from Stainless Steel A2 (304) or marine-grade A4 (316), this pulley resists rust and corrosion in the harshest saltwater environments. It is the preferred choice for marine rigging, flagpoles, fitness equipment, and architectural suspension systems.
Stainless Steel Swivel Pulley Block Specifications
| Product Name | Swivel Pulley Block / Single Sheave Pulley |
| Material Grade | Stainless Steel A2 (304) / A4 (316) |
| Wheel Type | Single Sheave (Nylon or Stainless Steel Wheel available) |
| Top Attachment | Swivel Eye (360° Rotation) |
| Rope Compatibility | Suitable for Fiber Rope and Wire Rope (M15 – M100 sizes) |
Engineering Insight: Why is the “Swivel” important?
Using a static pulley typically leads to “rope memory” issues, where the rope naturally twists as it is pulled. This adds friction and can cause the rope to jump off the wheel. The Stainless Steel Swivel Pulley Block eliminates this risk. The head automatically rotates to align with the direction of the pull, reducing wear on both the pulley and the rope by up to 40%.
For more details on pulley mechanics, please refer to the Pulley entry on Wikipedia.
Material Guide: A2 vs A4
- A2 (304): Perfect for home gyms, clotheslines, and garage hoists.
- A4 (316): Essential for sailing yachts, kayak anchors, and coastal flagpoles where saltwater is present.
Frequently Asked Questions (FAQ)
Q: What is the Safe Working Load (SWL)?
A: SWL depends on the size. For example, an M25 pulley typically handles ~150kg, while an M50 handles ~400kg. Please consult our load chart for overhead lifting.
Q: Is the wheel removable?
A: Most standard models have a riveted axle for safety, meaning the wheel is permanent. We also offer “Snatch Blocks” with removable pins if you need to insert a rope from the side.
Need Pulleys in Bulk?
Handan Bolt stocks thousands of Stainless Steel Swivel Pulley Blocks in sizes from M15 to M100. Contact us for wholesale pricing on rigging hardware.
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