Lifting Configuration Working Load Limit Guide
Selecting the correct chain sling configuration is critical for safe lifting operations. Working Load Limits (WLL) vary depending on chain diameter, grade, sling leg arrangement, and the angle of lift. Using the wrong configuration or exceeding rated capacities can lead to equipment failure and serious risk.
The table below outlines standard WLL values for common chain sling setups, including single leg, multi-leg, and endless configurations, to support proper sling selection and lift planning.
Working load limits in tonnes (WLL)
The working load limits stated on the EC Declaration of Conformity supplied with every chain sling have been determined on the basis that the loading of the chain sling is symmetrical (multi leg slings) and there are no particular hazardous conditions.
Periodic Thorough Examination
Throughout the life of the chain sling it is recommended that an examination as per the requirements of Lifting Operations and Lifting Equipment Regulations 1998 (LOLER) takes place. This can be as part of an agreed written plan agreed between a competent person and the owner of the sling.
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| Chain dia. mm | Grade | Factor 1 | Factor 1.4 | Factor 1 | Factor 2.1 | Factor 1.5 | Factor 1.6 |
| 7 | 8 | 1.5 | 2.12 | 1.5 | 3.15 | 2.24 | 2.5 |
| 7 | 10 | 2 | 2.8 | 2 | 4.2 | 3 | 3.2 |
| 8 | 8 | 2 | 2.8 | 2 | 4.2 | 3 | 3.2 |
| 10 | 8 | 3.15 | 4.25 | 3.15 | 6.7 | 4.75 | 5 |
| 10 | 10 | 4.0 | 5.6 | 4 | 8.4 | 6 | 6.4 |
| 13 | 8 | 5.3 | 7.5 | 5.3 | 11.2 | 8 | 8.5 |
| 13 | 10 | 6.7 | 9.5 | 6.7 | 14 | 10 | 10.7 |
| 16 | 8 | 8 | 11.2 | 8 | 17 | 11.8 | 12.5 |
| 16 | 10 | 10 | 14 | 10 | 21.2 | 15 | 16 |
| 19 | 8 | 11.2 | 16 | 11.2 | 23.6 | 17 | 18 |
| 19 | 10 | 14 | 20 | 14 | 30 | 21 | 22.4 |
| 23 | 8 | 16 | 23.6 | 16 | 35.5 | 25 | .26.5 |
| 23 | 10 | 21 | 29.5 | 21 | 44 | .31.5 | 33.5 |
| 26 | 8 | 21.2 | 30 | 21.2 | 45 | 31.5 | 33.5 |
| 26 | 10 | 27 | 38 | 27 | 57 | 40 | 43 |
| 32 | 8 | 31.5 | 45 | 31.5 | 67 | 47.5 | 50 |
| 32 | 10 | 40 | 56 | 40 | 85 | 60 | 65 |
Correct interpretation of Working Load Limits is a fundamental part of lift planning and risk control. Sling angle, configuration, and equipment grade all directly influence load capacity, and these factors must always be considered together — not in isolation. WLL values should never be exceeded, and any uncertainty in setup, loading conditions, or equipment suitability should be reviewed by a competent person before lifting operations begin.
If you need guidance on sling selection, configuration, or lift planning, contact Worlifts today to speak with a member of our lifting equipment team.
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