EN 13411-3 Round Wire Rope End Stop 3.1 T And TKH Ferrules

Product Description

3.1 T AND TKH FERRULES TKH ferrule EUROPEAN STANDARD SYSTEM – EN 13411-3
GENERAL DESCRIPTION
The aluminium ferrules, type T and type TKH correspond to the European standard for turnback ferrules (also known as ferrule secured eye terminations, FSET). The standard is EN 13411-3. The ferrule system is specified in Appendix 1. The ferrules are extruded seamlessly over mandrel and the aluminium alloy is EN AW-5051A according to EN 573-3. There is a conical ferrule called TK which is similar to the TKH but without the inspection hole. The TK ferrule does not comply with the EN standard. If used in any application the selection table is the same as for TKH. Special care has to be taken when using the TK ferrule due to lack of inspection hole.
APPLICATIONS
The aluminium ferrules are the most commonly used ferrules on the market today. They have a vast variety of applications, especially in the lifting gear industry. The T ferrules and TKH ferrules are thoroughly specified and very well defined for many different wire rope applications. Four different cases are tested and verified according to the standard, EN 13411-3. The ferrules can be used for fibre core single layer wire ropes, steel core single layer wire ropes, rotation resistant wire ropes and spiral strand ropes. Always use new wire ropes.
THE CORRECT SIZE OF THE SLING EYE
If a thimble is not used, the distance from the swaged ferrule to the inner bearing point of the soft eye must be at least 15 x the wire rope diameter (D), as per the figure. The width of the eye without load shall be approximately half its length. When using a pin or a hook, the minimum eye size should be verified with the formulas below.