There are circumstances which require that multiple chain slings be used to lift a single load. At first glance these charts appear to be simple easy-to-read and follow guidelines for the maximum lifting capacity or working load limit (WLL) that a given alloy chain sling may have at a specific lifting angle. They are reproduced and can be printed as large or small wall posters or as pocket guides that riggers carry with them for quick reference. If you use slings of unequal length apply the SMALLESTsling angle.Īlthough the known trigonometrical functions apply to all stress calculations, many trade publications and standards give specific sling strength calculation examples which one can follow.įor a ‘day-to-day’ practical calculation we found the following method the easiest way to determine the sling size required.Contributed by Bob Kozickie, Technical Sales Support ManagerĪlloy Chain Sling Capacity Charts are published by Standards Associations, chain manufacturers, and virtually every rigging shop in existence. One of the most frequently asked questions.ĪLWAYS apply the HORIZONTAL sling angle. Only where headroom is a limiting factor should sling angles smaller than 30° be applied and careful computation made to ensure that a sling of proper size is used to provide safe working conditions. As can be seen from the table, sling stresses increase tremendously with angles smaller than 45°. When computing sling capacities always take this most important factor into account. Imagine one carries a weight with one’s arm hanging down, and then try lifting the same weight sideways up and away from your body. A simple demonstration makes this very clear.

STEVEN WOLOSHYN Customer Service M: 7 Customer Satisfaction Questionnaire (194k pdf file)Īll sling angles as mentioned in this catalogue are measured from the horizontal.Īs the angle decreases the stress imposed on the leg of a sling increases.

DAVID HOOPER Regional Sales Manager, Quebec M: 5 RICHARD CHEVRIER Customer Service M: 5 WILLAINE JULIASSAINT Customer Service M: 5 PIERRE BARIBEAULT Rigging Consultant M: 5 MICHAEL THUN Rigging Consultant M: 51 Edmonton (7) Click Here for Map and Address.

NATHAN SMITH Rigging Consultant M: 4 JAMIE-LEE KENNEDY Rigging Consultant M: 4 GEORDY CIVIERO Rigging Consultant M: 4 ALEX CRITELLI Rigging Consultant M: 9 SCOTT FLEMING DIRECTOR and Sales/Rigging Training Manager M: 4 Montreal (5) Click Here for Map and Address.

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Automatic & Remote Controlled Load Release Systems.

Load Positioning Swivels and Lifting Eyes.RUD Lifting & Fall Protection Anchorage Points.Twin-Path® and Synthetic Lifting Slings.

Rigging sling chart