BS EN 13411-9:2021

What is BS EN 13411‑9 about?   

BS EN 13411‑9 specifies the minimum requirements for solid thimbles made of steel or cast iron for terminations of stranded steel wire ropes. 

BS EN 13411‑9 covers the following hazardous that is recognized as being typical for solid thimbles for general purposes: 

• Contact with rough surfaces, sharp edges, and corners as well as protruding parts, the origin of which relates to the shape and/or superficial finishing 
• Break-up during operation, the origin of which relates to the mechanical strength, which can result in a hazard to hand and/or falling parts 

Note 1: BS EN 13411‑9 is applicable to ferrule-secured terminations with solid thimbles in combination with ferrules (see EN 13411-3), that have an efficiency factor KT of at least 0,9, and to spliced terminations with solid thimbles (see EN 13411-2), that have an efficiency factor KT of at least 0,8, which are used as accessories for steel wire ropes, such as slings or wire rope assemblies, having a lifting, lowering or loadbearing effect in hoisting equipment. 

Note 2: Round thimbles (thimble with rotational symmetry around the bore) are not subject to this document. 

Who is BS EN 13411‑9 for?  

BS EN 13411‑9 on terminations for steel wire ropes is useful for:  

• Thimbles manufacturers  
• Crane operators 
• Maintenance servicemen 
• Safety regulatory bodies 

Why should you use BS EN 13411‑9?   

Solid thimbles play a major role in cranes. Unsafe termination of wires can lead to hazardous situations and can cause damage to goods and injury to people.  

Accidental release of a load due to failure of the solid thimble directly or indirectly endangers the life or the health of those persons within the danger zone. Assembly faults can also lead to premature failure.  

BS EN 13411‑9 contains requirements regarding the dimensions enabling the correct assembly.  

BS EN 13411‑9 specifies requirements for the design, manufacture, and testing of solid thimbles, to ensure that the required level of performance is obtained to exhibit the required strength and endurance 

BS EN 13411‑9 specifies the minimum requirements for solid thimbles made of steel or cast iron for terminations of stranded steel wire ropes.  

The use of BS EN 13411‑9 can help mitigate and reduce the risks of hazardous situations. BS EN 13411‑9 can be used by machine manufacturers to produce safe solid thimbles.