Sling Angle Chart, To determine capacity at an angle, multiply the rated capacity by the angle factor in the charts. . Here is a clear, easy‑to‑use chain sling load safety chart to help you select the correct chain sling working load limit (WLL) for your lifting operations. See examples of reduction factor, tension factor and minimum sling rating for different angles and loads. See tension, utilization, warnings, plus PDF and CSV. The tension on each leg of the sling is increased as the angle of lift, from horizontal, decreases. Enter load, legs, and angle reference choice here. About this free rigging calculator This free online rigging calculator helps you estimate sling angle, per‑leg line tension, and simple load sharing for common lifts. Works with both metric and imperial units. Wear or damage to sling webbing Refer to the Effect of Angle chart in the General Information section of the Lift-All catalog. Includes sling angle charts, formulas, and examples for calculating safe lifting loads. 9 and WSTDA standards and regulations All sling webbing contained in this catalog is recommended for general purpose lifting. Use it as a sling angle calculator or two‑leg bridle calculator to visualize how moving the hook or widening pick points changes tension. Always protect synthetic slings from being cut by corners and edges. Sling Angle Calculator: How to Use It Safely Check sling angles, load multipliers, and leg tension in minutes so every lift stays within safe limits. The capacity of round slings and choker hitches decreases as the angle from horizontal increases. Return-eye (reversed-eye) sling is formed by using multiple widths of webbing held edge-to-edge. These charts provide immediate access to critical reduction and tension factors without requiring complex trigonometric calculations in the field. To determine the actual sling capacity at a given angle of choke, multiply the sling capacity rating (for a choker hitch) by the appropriate reduction factor determined from the tables below. Sling webbing has surface yarns connected from side to side, which not only protect the core yarns, but position surface and tensile yarns to work together to support the load. Our helpful spreadsheets will calculate the basic sling leg lengths and suggest some top-selling standard sling types and sizes to meet your capacity. 184, ASME B30. A wear pad is attached on one or both sides of the sling body and on one or both sides of the loop eyes to form a loop eye at each end which is at a right angle to the plane of the sling body. Aug 12, 2025 · Calculate sling angles and tension forces quickly with our free Sling Angle Calculator. This chart supports safe planning and use of lifting equipment, showing how safe working load changes with chain grade, leg configuration and sling angle. Sep 8, 2022 · Learn how sling angles affect sling capacity and tension. Refer to the chain chart on this page and the Effect of Angle chart in the General Information section of the Lift-All catalog. Sling Angle Calculator Plan safer picks by checking sling angles quickly. Download PDF files with charts and formulas for round slings, choker hitches and nylon webbing slings. As the sling legs spread out, the angle creates extra tension and the sling must be derated. Slings should not be used at angles of less than 30°. Learn safe ranges (45°–60°) and apply results in your lift plan. Learn how to calculate the lifting capacity of slings at different angles of lift and choke. Sling capacity decreases as the angle from horizontal decreases. Download our Basket Chain Slings Catalog Single, Double, Triple & Quad Chain Slings What is the ideal sling angle? The ideal sling angle is a 90 degree angle vertical hitch, where the sling legs lift straight up-and-down and no angle tension is added. It is most desirable for a sling to have a larger angle of lift, approaching 90°. Oct 13, 2025 · Sling angle charts cross-reference sling length and vertical height to determine precise angles and load factors. Perfect for riggers, crane operators, and engineers. Learn how to calculate sling angles and their effects on sling tension and capacity using a chart and formulas. Calculate sling angles, leg tension, and reduction factors with worked examples. The 11. Lift-All web slings meet or exceed OSHA 1910. - Calculating Sling Angles Why are Sling Angles important? Rigging slings and lifting slings are made of cable, chain, rope or webbing, and are used to safely move large loads. Lower angles increase tension quickly, so riggers try to keep sling angles high and avoid shallow angles that can overload the sling When a choke hitch is used, and the angle of choke is less than 120 degrees, the sling choker hitch capacity decreases. For example, a sling rated at 5,200 lbs in a basket hitch would have a 4,500 lb capacity at a 60 degree angle. This document provides charts showing how sling angles affect lifting capacity.
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