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When should you not use a wire rope sling?

When should you not use a wire rope sling?

Hooks that have been opened more than 15 percent of the normal throat opening, measured at the narrowest point, or twisted more than 10 degrees from the plane of the unbent hook. Corrosion of the rope or end attachments. Only extreme corrosion is necessary to reject a sling.

How many times should seizing wire be wrapped around wire rope to make an adequate seizing?

Normally, one seizing on each side of the cut is sufficient. For non-preformed or rotation- resistant ropes, a minimum of two seizings on each side is recommended. These should be spaced six rope diameters apart.

Can a fiber core rope be used in a sling?

•Wire core wire rope (IWRC) must not be used at temperatures above 400°F. •Fiber core wire rope (FC) must not be used at tem- peratures above 180°F. •Fiber core ropes should not be subjected to degreas- ing solvents. Effect of Anchor Shackle Pin or Crane Hook on Sling Eye Read Definition on page 3

How is the strength of a wire sling determined?

The rated capacity of any wire rope sling is based on the minimum breaking force of the wire rope used in the sling and other factors which affect the overall strength of the sling. These other factors include: • Efficiency of the eye splice or end termination attachment. • Number of parts of rope in the sling (applies to braided slings only).

When to use softeners when rigging a rope?

These softeners (5) are available at the tool crib. It’s a good rule to make sure that the length of the arc of contact of the rope is at least equal to one rope lay (above seven times the rope diameter). This is the most common cause of damage to wire rope. Practice proper rigging and use softeners at corners or sharp bends.

What kind of wire is used in Yarbrough slings?

All Yarbrough slings are available with a wide range of standard and custom end terminations and treatments in place of standard eyes. Yarbrough uses small diameter aircraft cable and EIPS or EEIPS IWRC wire rope to fabricate wire rope slings. Wire rope slings fabricated with fiber center wire rope are available on special request.