Sling angle chart. Slings should never be used at angles less than 30 degrees.

Sling angle chart When a sling is being used in a vertical position (a straight pull), a Working Load Limit (WLL) applies. How to Select the Proper Sling Size 1) Select the type of sling to be used. The Mar 9, 2024 · The Sling Angle Calculator: Unveiling its Significance Enter the sling angle calculator, a digital wizard that simplifies complex calculations, empowering riggers to make informed decisions. The Mar 24, 2021 · As this angle decreases the sling leg load increases. Learn safe ranges (45°–60°) and apply results in your lift plan. ). Multiply the rated capacity for the basket hitch as indicated on the sling tag by the reduction factor. Sling Angle Factor What is a Sling Angle Factor? Simply put, the sling angle factor (SAF) is the multiplier used to determine the additional tension on a sling (or other rigging hardware) when angles are applied. Measured from a common horizontal plane to the hoisting Type of hitch/method of rigging Effect of angle on capacity Chemical environment compatibility Protection from load edges Temperature of load and lift environment Condition of sling – passes all inspection criteria Site Content MULTIPLE SLING CALCULATOR Calculates sling loads with 2 or more slings, at different angles for a given weight. The result is the safe capacity designation for that sling in that rigging configuration. Oct 13, 2025 · Sling angle charts cross-reference sling length and vertical height to determine precise angles and load factors. Do not exceed rated capacities. Slings should never be used at angles less than 30 degrees. Rated Capacities for Slings Use the following calculator to determine the rated capacity required by the sling(s). Mar 1, 2023 · In conclusion, sling angles do matter. Sling-To-Load Angles and Choker Hitch Angles MUST be calculated by a qualified person, as defined by OSHA, "A person who, by possession of a recognized degree or certificate of professional standing in an applicable field, or who, by extensive knowledge training, and experience, has successfully demonstrated This load chart is specifically for Pewag manufactured slings but it shows the load capacities for grade 8 and grade 10 Alloy steel chain slings which are the standard used for chain slings in general use. Understanding and calculating the correct sling angle is essential for the safety and efficiency of lifting operations. It provides a scientific method to calculate the optimal angle for slings used with cranes, hoists, and other lifting devices, ensuring that loads are balanced and secure during lifting. Weight of Load (lbs) Number of Legs Supporting Load 90 8 This document provides charts showing how sling angles affect lifting capacity. Our helpful spreadsheets will calculate the basic sling leg lengths and suggest some top-selling standard sling types and sizes to meet your capacity. When using the Angle Factor Load Table, use the next larger load factor when the angle falls between the values on the table. For instance, try 45 or 30 degrees. Jul 3, 2021 · The Sling Working Load Limits chart is separated into different types of slings with each table showing different: Sling diameters Part numbers Sling types Chain sizes Also, the chart shows the sling angle and how much the sling can lift from that angle. Lifting Sling Load Equations and Calculator Mechanics and Machines Calculations Menu Application of Slings for lifting considerations and sling lifting load calculations (bottom). Sling angle can be determined mathematically or measured. Determine the associated reduction factor (see chart). USING AN ANGLE FACTOR CHART To use an angle factor chart, you first need to determine the sling angle. It helps determine the increased tension in a sling when the lifting angle is less than 90 degrees, ensuring safe and efficient lifting operations. Imagine one carries a weight with one’s arm hanging down, and then try lifting the same weight sideways up and away […] 4 Leg Hitch Calculator TOTAL LOAD WEIGHT: Pounds: Kilograms: Known Angle A: degrees from horizontal Calculate Reset Lifting load calculator for precise sling forces, angles, and center of gravity. A sling angle is a measure of the angle between the centerline of a sling and the length of either side of the sling. Do not use angles less than 30 degrees! How to calculate your Chain Sling correctly To ensure safe lifting operations with your chain slings, it's essential to understand how the maximum load is influenced by factors such as tool dimensions and lifting angles. Sling angles below 30° are strongly discouraged. The starting, or target angle for multiple leg slings should be 60 degrees from the horizontal. Understanding the effect of angles on sling capacities is a critical part of safe rigging. Learn how to calculate sling angles and their effects on sling tension and capacity using a chart and formulas. Sling Specification Tables - Sling tables throughout our site contain the Working Load Limits of slings rigged with these hitches at certain specified angles. This document provides general information about the effects of angles on sling use. 3 Sling Bridle: Required sling length This calculator is used when 3 slings will be attached to a load with 3 equally spaced attachment points that are all an equal distance from the centre of gravity and an ideal sling angle is selected. Calculate sling angles, leg tension, and reduction factors with worked examples. By viewing this page you are acknowledging that the calculator provided is for general purpose use only and is only as accurate as the variables entered into it. To determine capacity at an angle, multiply the rated capacity by the angle factor in the charts. As the angle decreases the stress imposed on the leg of a sling increases. NOTE: If the calculated Head Room is greater than the available Head Room, try typing in a smaller angle for Known Angle A. Learn how to calculate the lifting capacity of slings at different angles of lift and choke. Sling Angle Factor Calculator Determine accurate sling angle factors, enhance lifting safety, and ensure compliance with rigging and material handling standards. These charts provide immediate access to critical reduction and tension factors without requiring complex trigonometric calculations in the field. Multiply the actual load weight by this percentage, then add the answer to the actual load to be lifted. Aug 12, 2025 · Calculate sling angles and tension forces quickly with our free Sling Angle Calculator. Use this chart for all type slings: rope, chain or synthetic web. Learn how to calculate sling angles for safe lifting. If you can measure the angle of lift or the length and height of the sling as rigged, you can determine the properly rated sling for your lift. Jul 26, 2023 · Lifting Slings What Is a Sling Angle, and How Can Knowing Them Make Our Lifts Better? Are you having problems maximizing the lifespan of your slings? One of the root causes could be improper use leading to added stress. Divide sling height* [H] by sling length* [L]. Using the angle from horizontal, read across the Angle Chart to the corresponding number in the Reduction Factor column. Utilize the manufactures capacity charts and perform the simple calculations for angles that are not included in the charts. Sling-To-Load Angles and Choker Hitch Angles MUST be calculated by a qualified person, as defined by OSHA, "A person who, by possession of a recognized degree or certificate of professional standing in an applicable field, or who, by extensive knowledge training, and experience, has successfully demonstrated Calculate the Sling to Load Angle (see below — Sling To Load Angle). Slings with adequate capacity to handle the “scale” weight of the load have catastrophically failed because the Sling-to-Load Angle and increased tension were not taken into account. A sling angle of 60° or more is preferred. The rated capacity is based both on sling fabrication components (minimum breaking force of rope used, splicing efficiency, number of parts of rope in sling and number of sling legs) and sling application components (angle of legs, type of hitch, D/d ratios, etc. Sling Load Chart As the sling-to-load angle decreases, so does the rated capacity of a sling. This principle May 20, 2024 · Mode factors are the calculations used to determine the tension when lifting with two or more slings/chains at an angle greater than vertical. Wire Rope Sling CapacitiesWe Provide Wire Rope, Chain, Synthetic Slings, Cargo Control, Hardware, Fall Protection, and various other types of equipment for the utility, Marine, and construction industries. The Increased Tension method provides the increased tension as a function of the sling angle. Read the “increase in stress” as a percentage factor. 4) Multiple this angularity factor by the total load to be lifted. If not considered, the rigging gear can be severely overloaded to a point of failure. Features that affect the rated capacity of the sling and that shall be considered in calculating 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. As the angle from horizontal decreases, the reduction factor decreases and the tension factor increases. OR b. The sling leg load of two vertical slings is one-half of the total load for each Jan 12, 2021 · To gain a better overall idea of what a sling angle is and how to calculate it, read this detailed article, which provides an in-depth explanation. How to Select a Sling for Use at Any Angle When calculating for selection of the proper sling, select the vertical angle in the chart at left. 2) Determine the maximum angle from the vertical atwhich the sling or any leg of the sling will be used. Accurate angle measurements can help avoid overload risks and ensure secure rigging for heavy loads. Reduction Factor [RF] x the sling's rated capacity for the type hitch that will be used = Sling's Reduced Rating. Example Let’s look at two methods used to calculate the load on a particular sling leg. Slings should have a minimum design factor appropriate to the type of material asspecified in the appropriate section. 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. A simple demonstration makes this very clear. Perfect for riggers, crane operators, and engineers. Northern Strands offers a suite of specialized calculators designed to enhance safety and precision in your rigging and lifting operations. This diagram shows a lifting scenario with two slings at different angles lifting a level load. For best results, we recommend certified training to Oct 3, 2024 · The Sling Angle Factor Calculator is an essential tool for those in the lifting and rigging industries. Optimal horizontal sling angle is 60 degrees. Knowing and understanding sling angles could help you extend the lifecycle of your slings by putting the proper tension on them during a lift. |Understanding the effect of angles on sling capacities is a critical part of safe rigging. Download PDF files with charts and formulas for round slings, choker hitches and nylon webbing slings. This is achieved by having a sling length equal to the distance between pick points. Mar 22, 2024 · Enter the sling height and sling length into the calculator to determine the sling angle in degrees. The capacity of round slings and choker hitches decreases as the angle from horizontal increases. Below, we've compiled the necessary information to help you properly dimension your chain sling. Works with both metric and imperial units. Have a question Oct 3, 2024 · Can the sling angle be greater than 90 degrees? Practically, sling angles are between 0 and 90 degrees. ARC is a factory authorized repair center for IKAR/Ultra Safe retractable lifelines and renfroe clamps. See examples of reduction factor, tension factor and minimum sling rating for different angles and loads. The Capacities for our lifting slings are based on a Design Factor of 5:1, Chain Slings are 4:1. This tool considers the angle of the sling and provides accurate load capacities, offering a glimpse into the intricate dynamics of lifting operations. Consult sling load chart for capacity reduction due to sling angle or type of hitch used. Sling angles and influence on capacity. One method uses a sling angle factor chart, the other method the ratio of the length of the sling divided by the height. This blog will teach you to be prepared when lifting at an angle. a. This gives the rated capacity to look for in selecting the proper size of sling. Sling-To-Load Angle The Sling-to-Load Angle is the angle formed between a horizontal line and the sling leg or body. 3) Using this maximum angle, obtain the corresponding angularity factor the above chart. Ideal for rigging, crane work, and planning asymmetrical lifts. Mar 11, 2025 · The Rigging Angle Calculator is an essential tool for professionals involved in rigging and lifting heavy objects. The tension in each sling is calculated based on the geometry of the setup and the load weight. All sling angles as mentioned in this catalogue are measured from the horizontal. Angles above 90 degrees would indicate an unconventional and potentially unsafe rigging setup. Sling-To-Load Angle is always the angle between the sling leg and the horizontal surface. Multiply the sling leg’s share of the load by the tension multiplier to determine the increased sling leg tension. Whether you’re determining sling tension, calculating sling length, or estimating Wirelock® resin requirements, our easy-to-use tools provide valuable guidance for safe and effective equipment use. When you look at the angle factor column, you will notice a dramatic increase for angles less This load chart is specifically for Pewag manufactured slings but it shows the load capacities for grade 8 and grade 10 Alloy steel chain slings which are the standard used for chain slings in general use. You will need a sling or slings with a rated capacity equal to or greater than the rated capacity required for the corresponding rigging technique. Note that the rated capacity of a 30° Basket is only one half that of a 90° Basket. In addition, we offer inspection and proof testing services. Once you have determined the sling angle, find the corresponding angle factor, and multiply that number by the weight carried in each leg. Aug 15, 2024 · Learn more about the importance of calculating sling angles and how to find the right slings for your lifting tasks. Sling capacity decreases as the angle from horizontal decreases. . This chart shows the relationship between sling angle, reduction factor, and tension factor. Example: Although looking at this chart is pretty straightforward when looking at a basket hitch, you want to understand the working load The operation of this calculator is based on the following: The weight being lifted is symmetrically loaded, with the center of gravity directly in the center, and all leg lengths shall be equal. The Sling-to-Load Angle has a dramatic effect on sling Work Load Limits. It is important for ensuring the proper and safe use of slings in lifting operations. Determine the sling angle from the horizontal and the corresponding tension multiplier (from the chart below).