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Engineer the lift!!
DME recommends the use of Center Pull Style swiveling and pivoting hoist rings, rather than
conventional eye bolts.
Are you using the proper hoist ring for the application?
Is the hoist ring free to swivel and pivot? Any movement restrictions?
Are lifting hole(s) in the proper location?
Do you have the correct hole size for the hardware – safe lift capacity?
Are the holes tapped deep enough to ensure full thread engagement? (See figure #3 on the
Installation Information page)
Recommended hole depth:
Steel – 1-1/2 times the bolt diameter (min.)
Aluminum – 2 times the bolt diameter (min.)
RULE OF THUMB, IF IN DOUBT – DON'T!!
Applied Load Changes With Sling Angle
DME swiveling hoist rings are designed and rated to be pulled at any angle at the rated load. However, the
applied load on a multipoint lift will increase if the sling angle is less than 90°. Be sure to consider the sling
angle when selecting lifting equipment. See illustration below.
DO'S
1.
Observe working load limitations (be especially
careful with eyebolts used for angle lifts – see sling
angle chart).
2.
Visually inspect hoist ring prior to use.
3.
Fully tighten hoist ring to recommended torque. Full
thread engagement is required (no space between
swivel bushing and lift).
4.
Assure proper thread depth – do not shim.
5.
Make sure hoist rings have free travel – it must swivel
and pivot without restrictions.
6.
When installing in soft material, such as Aluminum,
the minimum effective thread engagement should be
two times the diameter of the bolt (1-1/2 times bolt
diameter – steel).
DME Company 29111 Stephenson Highway Madison Heights MI 48071
DME Hoist Rings - Engineer the Lift
DON'TS
1. Never pull a DME Center Pull Style hoist ring from
the side.
2. Never use an oversized hook in eyebolts or hoist
rings (see figure #1 on Installation Information
page).
3. Never use excessive sling angle.
4. Never steam clean or degrease hoist rings (could
cause rusting or binding).
5. Never apply shock loads.
6. Never allow the side of the hoist ring to make
contact with the lift (see figure #2 on the
Installation Information page).
7. DME hoist ring components are not
interchangeable with other manufacturers hoist
rings.
800-626-6653
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Table of Contents
Summary of Contents for DME Engineer Hoist Rings
- Page 1 Applied Load Changes With Sling Angle DME swiveling hoist rings are designed and rated to be pulled at any angle at the rated load. However, the applied load on a multipoint lift will increase if the sling angle is less than 90°. Be sure to consider the sling angle when selecting lifting equipment.
- Page 2 For through-hole applications, be sure that nut/washer are the same quality grade as the hoist ring Periodic visual inspection and pull testing is recommended as damage can occur from improper usage. DME Company 29111 Stephenson Highway Madison Heights MI 48071 800-626-6653...
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