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Construction Block With Shackle 4 Sheaves
Covers high-capacity 4-sheave blocks for loads between 45 and 210 UStons. The tables provide dimensions for large-diameter sheaves (up to 630mm) and high-load bronze bearing systems.
Heavy-Duty Multi-Line Lifting: Construction Block with Shackle (4 Sheaves)
The Construction Block with Shackle (4 Sheaves) is a high-capacity rigging component designed for complex lifting and construction applications requiring extreme mechanical advantage through multi-line reeving. These blocks feature a quadruple-sheave configuration and are supplied with a high-strength shackle attachment as standard. Each unit is engineered for long-term durability and is standard-fitted with bronze bearings to ensure smooth operational rotation under heavy loads..
Engineered Safety and Structural Integrity
- Structural Safety Factor: Every block is manufactured to meet a Minimum Ultimate Strength of four times the Working Load Limit (4 X WLL).
- High-Capacity Range: Standard 4-sheave models support Working Load Limits (WLL) starting at 45 UStons and scaling up to 210 UStons.
- Quality Assurance: While standard models are featured, Ropeblock welcomes inquiries for custom-engineered versions to meet unique project demands.
- Design-Led Production: All dimensions provided in technical tables are indicative; a definitive technical drawing is submitted for approval prior to production to ensure precise fitment.
Advanced Configuration and Operational Integration
- Attachment Versatility: Beyond the standard shackle, optional configurations are available, including units with a hanger, pin, swivel eye, or swivel jaw.
- Broad Wire Compatibility: Optimized for a wide range of wire rope diameters, from 1/2″ up to 1-1/2″.
- Service Life Optimization: Users are advised to adhere to wire rope manufacturers’ D/d ratio guidelines to ensure proper sheave-to-rope diameter compatibility and longevity.
4-Sheave Construction Block Technical Specifications
The following table details standard 4-sheave Construction Block models. Please contact our technical department for full dimensional approval (∅D1, ∅D2, B, ∅D, ∅P, TD, ∅Z, T, TA, TB, TL, W) prior to ordering
⚠ Safety Warning: Always strictly adhere to the rated Working Load Limit (WLL). The Minimum Ultimate Strength is rated at 4 X WLL. Before installation or operation, consult the comprehensive warning and safety guidelines on page 136 and pages 138-149.