Product category:
Machine Safety Components
News Release from: J Lanfranco | Subject: ERM, ESL and HCE nuts and locking strips
Edited by the Engineeringtalk Editorial
Team on 18 June 2004
Self-locking fasteners can be reused 25
times
Lanfranco of France, a specialist in safety assembly fittings, is unveiling the star products of its range, the ERM, ESL and HCE nuts and locking strips.
Lanfranco of France, a specialist in safety assembly fittings, is unveiling the star products of its range, the ERM, ESL and HCE nuts and locking strips Their self-locking performance ensures complete assembly reliability validated by vibration loosening tests conducted by official laboratory CETIM
This article was originally published on Engineeringtalk on 5 Aug 2003 at 8.00am (UK)
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Unlike other self-locking nuts on the market, Lanfranco nuts can be re-used up to 25 times.
They provide very high resistance to vibration and ensure high-security fitting, in particular for the railway sector.
Lanfranco of France manufactures and distributes a full range of self-locking nuts and modular fittings for the railway, defence, public works and new energies sectors.
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Applications for the company's fittings include, among others, the production of specialist equipment for the quarrying and mining industries.
Lanfranco recommends its ESL nuts for standard or safety assemblies.
The self-locking system employs compression of the flanks of several screw threads in two zones.
More particularly, it is used in the railway sector for fixing parts under the chassis of carriages (compressors, transformers, air-conditioning units, and cabinets for various types of equipment), and for bolting shock-absorbers, traction motors, pantograph strips as well as brakes.
With the same self-locking system as in ESL nuts, ERM nuts also have an integrated conical washer that maintains tension in the assembly.
They are used for all standards of safety assembly jobs requiring parts to be maintained under compression.
ERM nuts are recommended for electrical connections (shunts) and for assemblies of several superposed items or flexible materials (composites, elastomers, etc).
HCE nuts are most commonly used for standard or safety assemblies with several nuts, more particularly when costs need to be kept under control (rail laying in the railway industry, for instance).
The self-locking system employs the compression of one or two threads in a single zone.
Locking strips are multi-point self-locking fittings positioned in a section with specific centre distances (defined by the customer) and providing lateral freedom (or leeway).They are generally used to connect several fixation points in a single operation without the need to closely align holes.
The locking nuts display excellent resistance to temperature, depending on the protective coating chosen.
They can be manufactured in different materials (carbon steel or similar, stainless steel, non-ferrous metals, titanium, etc) and can be tapped according to different standards (ISO, inch, gas thread, etc).
They can be supplied with numerous types of corrosion-proof, anti-seizing or even aesthetic coatings.
The self-locking torque of these nuts complies with standards NFEN ISO 2320 for steel and NFE 25035 for stainless steel.
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