Double-Sheave Mechanical Advantage Block With Swivel Hook
This Double-Sheave Pulley Block is engineered to multiply pulling force, offering a significant mechanical advantage (typically 3:1 or 4:1 reeving) for heavy rigging tasks. Its two parallel sheaves allow for efficient use of multiple cable runs, making it ideal for continuous hoisting or heavy-duty pulling where reducing operator effort is critical.
- Product Introduction
Key Structural Design
Integrated Forged Swivel: The block features a high-strength forged hook connected to a swiveling head, allowing the block to align naturally with the rigging line and prevent twisting under dynamic load.
Dual-Channel Efficiency: Two side-by-side sheaves are mounted on a common axle, ensuring balanced load sharing and effective management of dual-line reeving configurations.
Welded Frame Integrity: The side plates and internal spacers are secured by a robust, welded steel frame (highlighted in red), which absorbs lateral stress and protects the sheaves during operation.
Serviceable Axle: The common axle is designed for secure retention and potential servicing, allowing for inspection or replacement of the internal bearings/bushings to maximize the block's lifespan.
Specifications and Supply
We manufacture these blocks to precise industrial standards, focused on safety and endurance.
Reeving Capability: Designed specifically for multi-fall systems (e.g., 3-fall or 4-fall) to achieve significant force multiplication.
Material: Heavy-duty forged alloy steel for the hook and robust fabricated steel for the side plates.
Certification: Clearly marked with the Working Load Limit (WLL) and supplied with a hook safety latch.
Please provide your required Working Load Limit (WLL) and cable diameter for a comprehensive quote.
Request a Quote
Multiply Your Pulling Power. Secure certified hardware for your mechanical advantage systems. Contact Zhongzao Industry today for pricing on double-sheave blocks.
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