Nord-Lock Group has six state of the art technical centres across the world in order to best support its global customer base. The technical centres are complemented with the experience and skills of in-house engineers who perform customised tests and analysis, both at the centres and on-site for ‘real life’ testing.
The biggest junker machine in the world
Nord-Lock Group’s technical centre in Mattmar, Sweden, is home to the Super Junker – which Nord-Lock states is the biggest Junker machine in the world. “The Super Junker is the only Junker machine to date that can test bolted connections up to size M48. It is compliant to DIN 25201-4, DIN 65151 and ISO 16130,” explains Nord-Lock.
“The Junker test is considered the most severe vibration test for bolted connections. The size of the Junker is not the only impressive thing about it, it was also designed and built by our own engineers – highlighting their immense technical knowledge and bolting expertise.”
Over 1,000 hour of corrosion resistance
The Super Junker is not the only notable testing service developed by Nord-Lock Group. The company reports it was also the first to offer over 1,000 hour of corrosion resistance for all its steel wedge-locking washers, thanks to its modern facilities and specialised technical knowledge. Corrosion is a growing concern across all industries and the Neutral Salt Spray Test (NSST according to ISO 9227) is one of the most established methods to verify corrosion resistance. According to ISO 12944-6:2018, 1,000 hours in a salt spray chamber corresponds to at least C4 High or C5 Medium conditions. This ensures optimum performance over time, even in the most extreme environments.
Customised torque tension testing
Nord-Lock Group’s technical centre in Lyon, France, also offers services that go above and beyond for its customers. The centre’s torque tensile machine is used in accordance with ISO 16047 and measures all the important parameters needed to understand the tightening of a bolted joint. This information allows engineers to predict tightening forces and moment occurring. Deviation can also be statistically determined. Torque tension testing is performed on the customer’s specific application to provide them with the most reliable torque to apply to their specific product.
Will joined Fastener + Fixing Magazine in 2007 and over the last 12 years has experienced every facet of the fastener sector – interviewing key figures within the industry and visiting leading companies and exhibitions around the globe. Will manages the content strategy across all platforms and is the guardian for the high editorial standards that the brand is renowned.
