Description
Product Overview
The 33516 Heavy Duty Swivel Hoist Ring is engineered for the most demanding lifting and rigging tasks. Constructed from forged alloy steel with a minimum tensile strength of 180,000 psi, the ring provides exceptional load‑bearing capacity while maintaining a compact form factor. A black oxide finish protects the steel from corrosion, extending service life even in harsh, moisture‑laden environments. The ring features a 5:1 design factor, meaning it can safely handle five times the working load limit under ideal conditions, offering an added margin of safety for critical operations. Its 360° swivel capability allows the load to rotate freely, reducing stress on the rigging and enabling smoother, more controlled movements. The G‑thread size of 1/2″‑13 and a thread length of 1‑1/4″ ensure compatibility with a wide range of hoist and lifting equipment, while the overall height of 5‑19/64″ provides sufficient clearance for various applications. Each ring undergoes magnetic‑particle inspection in accordance with ASTM E 1444, guaranteeing that any surface or subsurface discontinuities are identified and addressed before the product reaches the customer.
![[Product front view showing all components]](https://www.qanex.store/wp-content/uploads/2026/08/39c187a72f734c96b0e95f0ad0f4dfc3.jpg)
Usage
This swivel hoist ring is ideally suited for industrial, construction, and material handling settings where reliability and safety are paramount. It excels in applications such as overhead crane lifting, gantry systems, hoist assemblies, and rigging setups for heavy machinery. The robust alloy steel construction makes it appropriate for use in environments with exposure to chemicals, saltwater, or extreme temperature fluctuations, while the black oxide coating mitigates rust formation. Operators in manufacturing plants, shipyards, and oil‑field operations will find the 2500 lb working load limit sufficient for moving large components, structural steel sections, and heavy equipment parts. The 360° swivel action reduces the need for additional swivel joints, simplifying rigging configurations and decreasing the overall weight of the lifting system. Its compact dimensions allow for easy integration into confined spaces, making it a versatile choice for both permanent installations and temporary lifting solutions.
Why Choose Us
Choosing the 33516 Heavy Duty Swivel Hoist Ring means selecting a product backed by rigorous quality assurance processes and a commitment to customer satisfaction. Our manufacturing partners employ precision forging techniques and heat‑treatment cycles that produce a uniform grain structure, enhancing fatigue resistance and overall durability. The magnetic‑particle inspection performed on every unit ensures that any potential defects are detected early, providing confidence that the ring meets or exceeds industry standards. In addition, the black oxide finish is applied in a controlled environment to achieve consistent coverage and adhesion, protecting the steel against corrosion without compromising mechanical properties. We stand behind our products with responsive technical support, offering guidance on proper installation, maintenance, and load calculations. Our after‑sales service includes a clear return policy and the availability of replacement parts, ensuring that your lifting operations remain uninterrupted. By partnering with us, you gain access to a reliable supply chain, detailed product documentation, and a team of experts dedicated to helping you achieve safe and efficient material handling.
Key Features
- Forged alloy steel construction delivers high tensile strength and long‑term durability.
- Black oxide coating provides superior corrosion resistance for outdoor and marine use.
- 360° swivel design reduces stress on rigging and enables smooth load rotation.
- 5:1 design factor offers an added safety margin beyond the 2500 lb working load limit.
- Comprehensive customer support and easy access to replacement parts ensure uninterrupted operation.
FAQ
What is the maximum load this hoist ring can safely support?
The ring has a working load limit (WLL) of 2500 lb. With a 5:1 design factor, it can theoretically withstand up to 12,500 lb under ideal, short‑duration conditions, but it should never be used beyond the specified WLL for safety reasons.
Is the black oxide finish suitable for use in saltwater environments?
Yes, the black oxide coating offers enhanced corrosion resistance, making the ring appropriate for marine applications and other environments where exposure to saltwater or high humidity is common.
Can this hoist ring be used with standard 1/2″‑13 G‑threads on my crane?
Absolutely. The ring features a 1/2″‑13 G‑thread size and a thread length of 1‑1/4″, which matches the standard specifications for most overhead cranes and hoist assemblies.
How often should the hoist ring be inspected for safety?
We recommend a visual inspection before each use and a more thorough examination, including magnetic‑particle testing, at regular intervals defined by your organization’s safety protocols or at least annually.
What warranty or after‑sales service is provided?
The product comes with a limited warranty covering manufacturing defects. Our technical support team is available to assist with installation guidance, maintenance advice, and any warranty claims you may need to file.




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