Swivel Hoist Rings: Specifications & Safety Information

AS WITH ALL MECHANICAL DEVICES, REGULAR INSPECTION FOR WEAR AND STRICT ADHERENCE TO THE SAFETY PRECAUTIONS IS NECESSARY TO PREVENT MISUSE FAILURE

Regardless of the 5:1 safety factor on hoist rings, NEVER EXCEED THE RATED CAPACITY. Rated capacities are marked on each hoist ring. This safety margin is needed in case of misuse, which could drastically lower load capacity

  • Make sure the hoist ring pivots and rotates in all directions freely (Fig. 2)
  • Tighten mounting bolts to torque recommended (the torque values are stamped on each hoist ring). Periodically check torque because bolts could loosen in extended service
  • Do not apply shock loads. Always lift gradually. Repeat magnaflux testing if shock loading ever occurs.
  • Do not use spacers between the hoist ring bushing and the mounting surface
  • Thread engagement when installing in steel should be a minimum of 1-1/2 times the bolt diameter. For softer materials, such as aluminum, thread engagement should be a minimum of 2 times the bolt diameter. The 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 (nuts & washers must be of the same grade as the Hoist Ring.
Safety Swivel Hoist Rings - Safety Precautions
Safety Swivel Hoist Rings - Safety Precautions
Safety Swivel Hoist Rings - Safety Precautions
Safety Swivel Hoist Rings - Safety Precautions

Hoist Ring DO's & DON'Ts

DO’s

  • Observe working load limitations, paying careful attention to angular lifts (Fig. 4)
  • Visually inspect each hoist ring prior to each lift
  • Ensure Hoist Rings are tightened to the recommended Torque values
  • Assure proper thread depth and length of thread engagement (1-1/2 times for steel, 2 times for softer material such as aluminum (Fig. 3)
  • Make sure Hoist Rings have free travel – they must swivel and pivot without restriction (Fig. 2)

DON’Ts

  • Never pull the hoist ring bar from the side
  • Never use an oversized hook (Fig. 1)
  • Never use an excessive angle
  • Never apply shock loads
  • Never steam clean or degrease a hoist ring
  • Never allow the side of a hoist ring to make contact with the lift

Important: The load on each hoist ring is not simply total weight divided by the number of hoist rings. The resultant force can be significantly greater at shallow lift angles and unevenly distributed loads. See the example below:

Safety Information