Muncy Machine and Upson-Walton

Swage button ferrule wire rope best practice Muncy

Swage button ferrule wire rope best practice Muncy

What is a swage button ferrule?

Wire rope is terminated in many different ways. One way is to swage a button (also known as a ferrule or dead end or knob) on the end of the wire rope. This termination can be used to seize the rope, hold the end in a slot where there is no direct load (like on a drum in a winch or equipment), or used for a direct load.

Before you start swaging a button ferrule

Trained, competent professionals should only make rigging to terminate wire rope. It is important to understand the button and wire rope manufacture’s warnings and instructions. Many button manufacturers, including Muncy, base their ratings on using certain wire rope constructions. Know which after swage dimensions your customer and the fittings manufacturer require, including any applicable tolerances.


Best practice for swage button ferrules

Rigging shops and their customers, the end users, often ask whether the wire rope should stick out at the end of the button. The wire rope should extend 1/2 to 1 time the wire rope diameter before swaging. This allows the button to swage wire rope the entire inside diameter. Wire rope can be cut at an angle. If the rope does not stick out of the button, and the wire rope is cut unevenly, the assembly may lose strength and efficiency if the inside diameter doesn’t have the entire wire rope swaged. Some end users may not want to sharp wires extending out of the button and for the wires to be trimmed away. This practice is fine, being careful not to grind or cut the button while trimming or grinding the wire.

Note: this article is for informational purposes only. The reader should not rely on anything written herein and the author makes no warranties whatsoever.

Author: Muncy Industries


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