As with all mechanical devices, regular inspection for wear and strict adherence to use instruction is necessary to prevent misuse failure.
- Despite the 5:1 safety factor, NEVER EXCEED THE RATED LOAD CAPACITY. This safety margin is needed in case of misuse, which could drastically lower load capacity.
- Tighten mounting screws to recommended torque. Periodically check torque because screws could loosen with extended service.
- Tensile strength of parent material should be above 80,000 PSI to achieve full load rating. For weaker material, consider through-hole mounting with a nut and washer on the other side.
- AVOID SHOCK LOADING. Always lift gradually. Repeat magnetic particle inspection if shock loading ever occurs.
- Never exceed the rated load capacity of the hoist ring.
- Tensile strength of material to be lifted should be at least 80,000 PSI for full load rating. For lower tensile materials, increase thread length or use a through hole with a nut and washer on other side.
- Do not allow hoist rings to bind. If necessary use a spreader bar to avoid binding.
See example below.
- Spacers should not be used between the hoist ring and the mounting surface.
- Mounting surface must be flat and smooth for full contact with the safety hoist ring. Tapped mounting holes must be perpendicular to the mounting surface.
- Mounting screws should be tightened to the recommended torque. Torque should be checked periodically as bolts could loosen in extended service.
- Never lift with any device, such as hooks, chains or cables that could spread or damage the bail.
- Never apply shock loads and use good lifting practices. Always lift gradually. If shock loading ever occurs, the safety lifting device should be magnetic particle inspected.
- After installation, always check that ring rotates and pivots freely in all directions.