This article first appeared in the Railway-News magazine, Issue 3 2022.
An ISO 9001-certified company since 1998, we have since then made safety-critical fasteners our speciality. We are also known as a reliable supplier and manufacturer.
The Lanfranco product range is as diverse as it is specific, due to the large diversity of applications. Our products will make any critical bolted assembly secure. The use of Lanfranco’s self-locking nuts increases the safety of the rolling stock as well the track where many applications such as splice joint bars, crossings, signalling, catenaries and electrical connection depends on a good assembly.
The most relevant example might be the fastening of railway crossings like diamond junctions for freight cars in Canada that must handle severe climatic conditions and heavy vehicles.
The track is generally poorly maintained (overloaded freight vehicles, high temperatures).
Obviously, it’s not the only place where you can find severe problems. Splice joint bars also face severe conditions, and the track is far from being first on the list for maintenance. Difficult access to some parts of the network combined with the lack of availability of maintenance teams always lead to the same issue: loosening.
Rolling stock, as well as interiors, bogies, shock absorbers, brakes and door and window fastenings require safety, speed and reliability.
The J. Lanfranco slotted nuts have proved for many years that they are fully adapted for those applications and are reliable at dealing with loosening difficulties.
Whatever the environment – cold, heat, humidity, corrosion – our self-locking nuts bring added value with a longer lifespan as well as lower costs and maintenance times.
Our double slot nuts, all-metal and reusable ESL, THU and ERM (data sheets available on www. lanfranco.fr), can prevent you from stopping a production line or losing an electrical connection as well as reducing your maintenance costs.
Lanfranco lock nuts have the best resistance to vibration under any conditions: shock, impact, extreme temperatures and corrosion.
Use the form opposite to get in touch with J. Lanfranco & Cie directly to discuss any requirements you might have.