Welcome to Associated Wire Rope & Rigging .

8125 Saran Drive Playa del Rey, CA 90293
Mon - Sat 10.00 - 18.00
Get Free Quote
Call Us +1 310 448 544

Turnbuckles

Ropeblock Full Catalog

This foundational 2-page document introduces the turnbuckle series, highlighting key features such as standard locking nuts and optional turning wheels or ratchets. It includes a comprehensive technical matrix for the Jaw-Jaw configuration (Model SPS TR), covering Working Load Limits (WLL) from 1.7 to 176.3 UStons. The document provides detailed dimensional parameters for thread sizes, take-up lengths, and physical weights, serving as a primary reference for heavy-duty in-line tensioning.

Request Pricing & Availability
Download PDF

Engineered for Precision Tensioning: High-Capacity Turnbuckles with Trapezoid Thread

Ropeblock Turnbuckles are high-performance tensioning devices engineered for heavy-duty industrial and maritime rigging. Utilizing a robust trapezoid thread design, these turnbuckles provide reliable length adjustment and load securement for working loads ranging from 1 to 160 tons. Their versatile design allows for nearly any combination of end fittings, ensuring a perfect fit for complex structural and crane rigging systems.

Maximum Safety & Quality Compliance
  • Structural Safety Factor: Engineered with a Minimum Ultimate Strength of 5 X WLL to ensure maximum structural integrity under load6666.
  • Standardized Dimensions: Manufactured in general accordance with NEN 3305 for consistent quality and geometric reliability.
  • Secure Locking: Factory supplied with lock nuts as standard; locking plates, bolts, and other specialized devices are available on request to prevent unintended rotation.
  • Operational Guidelines: Designed strictly for straight or in-line pull only to maintain load stability.
Industrial Versatility & Customization
  • Configurable End Fittings: Available in any combination of jaws, round eyes, stud eyes, and welding ends (no stub ends).
  • Specialized Control: Can be supplied with an integrated turning wheel or ratchet on request for easier on-site adjustment.
  • Durable Finishes: Standard blue primer (RAL 5017) coating is provided, with options for custom colors, galvanization, or ISO 12944 compliant marine coatings.
  • Tailored Engineering: While standard sizes are readily available, Ropeblock welcomes enquiries for custom-designed solutions and non-standard sizing to meet specific project needs.

Turnbuckle Technical Specifications (Trapezoid Thread)

Below is a representative selection of turnbuckle configurations. Please contact our technical team for full dimensional details (A, P, Q, S, T, U, V, W) and specialized combinations based on your specific rigging requirements.

⚠ Safety Warning: Always adhere to the recommended Working Load Limit (WLL) and ensure the turnbuckle is used for straight or in-line pull only. Improper loading can lead to structural failure. Refer to the comprehensive safety documentation on pages 136-149 for full maintenance and installation procedures.