Motion Control & Drives


High strength bolting solutions

March 2024 Motion Control & Drives

BMG’s Nord-Lock Expander System pivot pin components offer dependable solutions that combat the challenges of lug wear in the marine and shipping sector. Pivots, which are at the centre of any rotational movement, often experience lug wear, which occurs due to the clearance between the bore and the conventional pin. This is commonly repaired with line boring, a technique associated with high costs and protracted downtime.

“Through Nord-Lock’s advanced Expander System, which embraces advanced pivot pin technology, BMG specialists are able to supply the correct pivot to prevent problems that lug wear causes to mobile cranes at harbours. This maximises uptime, enhances safety on site, and minimises maintenance costs,” says sales manager, Maryna Werner. The Expander System, which comprises an assembly that includes an axle tapered at both ends, two expansion sleeves, two tension washers, and two fasteners, has been designed for convenient onsite repairs. Even in a situation where the lugs are badly worn, a repair can be made in the field, with minimum downtime. The sleeves of the Expander System simply expand to conform with the wear pattern and lock the system in place, without the need for time-consuming and costly welding and line boring. Once retorqued, the system locks from both sides, significantly increasing stability.

This system has also been designed to improve safety on site. By replacing a traditional straight pin with an Expander System pivot pin of the same diameter, the risk of axle breakage is reduced, and the strength of the machine is enhanced through the system’s double-sided axial locking design.

There are many other benefits, which include a permanent solution to lug wear, quick and easy installation and removal, increased service life of bushings, bearings and seals, and greater safety. A key advantage of this system over conventional pivot pins is pressure distribution. A conventional system only distributes the load onto a very small area, where the Expander System distributes pressure over the whole contact area in the direction of the force. There is no need for additional fastening holes, threads or welding of locking rings on the machine, and no need for fine machining in the lugs, as this system makes it possible to use wide tolerances. The Expander System can also be combined with Nord-Lock washers for enhanced efficiency in vibration-intense applications.

BMG’s customised Expander System pivot pins are specifically adapted to suit exact requirements through the use of specific materials, hardening treatments, surface coatings, and the correct tolerance for each application. The system is also suitable for use in many other industries, including construction, steel, railway, bridge building, mining and quarrying, forestry and agriculture, manufacturing and processing, shipbuilding, power generation, oil and gas, transportation, and machine building. BMG specialists work closely with customers in all sectors to offer a complete service solution, where the team’s technical expertise supports quality structural fasteners and fastening components.


Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

WEBER-HYDRAULIK modernises warehouse in record time
Motion Control & Drives
WEBER-HYDRAULIK is a leading international specialist in customised hydraulic solutions. After its old buffer warehouse had become outdated and was partially worn out mechanically, the decision was made to completely renovate it.

Read more...
OMC deploys cobots to improve throughput ten times
Motion Control & Drives
OMC, a pioneer in optoelectronics design and manufacture, is investing to introduce innovative cobot technology onto its fibre optic production line.

Read more...
Yaskawa Southern Africa launches laser welding cell
Yaskawa Southern Africa Motion Control & Drives
Yaskawa Southern Africa has partnered with Industrial Manufacturing Systems South Africa to introduce the Megmeet laser welding cell, a breakthrough solution combining precision robotics with cutting-edge laser technology.

Read more...
Next-gen planetary gearboxes
SEW-EURODRIVE Motion Control & Drives
Leading the way in planetary gear unit innovation, SEW-EURODRIVE is extending its reach across a growing range of industries, delivering the advantages of this powerful technology through locally engineered solutions that ensure faster lead times.

Read more...
Record-breaking dragline relocation
Motion Control & Drives
Draglines are key pieces of equipment in open-pit mining. BHP Mitsubishi Alliance entrusted Mammoet with the relocation of a 3100 ton Marion 8050 dragline from one end of the Peak Downs coal mine in Queensland, Australia to another, a full 27 km away.

Read more...
igus expands 3D printing capabilities
igus Motion Control & Drives
Motion plastics specialist, igus South Africa has introduced a new 3D printing service capable of producing custom parts in two engineering-grade polymers with exceptional strength and without the need for lubrication.

Read more...
Bühler adds new die refurbishment machine
Motion Control & Drives
Bühler has reinforced its commitment to customers in southern Africa with the installation of a new die refurbishment machine at its Johannesburg workshop.

Read more...
SEW-EURODRIVE drives innovation at automotive plant
SEW-EURODRIVE Motion Control & Drives
[Sponsored] A major automotive manufacturer in Gauteng has boosted its operational efficiency, safety and energy savings with the installation of SEW-EURODRIVE’s advanced MOVIGEAR mechatronic drive system in its newly expanded buffering zone.

Read more...
Reimagining rotation for a circular and sustainable future
SKF South Africa Motion Control & Drives
Through the design and manufacture of components with sustainability at their core, SKF is reimagining the future of rotation, rolling away from traditional, consumable-based thinking toward a smarter, more sustainable circular approach.”

Read more...
Optimising operational efficiencies through advanced filtration systems
Bearing Man Group t/a BMG Motion Control & Drives
Filtration is the only effective defense against wear and tear when contaminants are present. It is therefore critical that effective filter components are correctly used to ensure dependable performance, high efficiency and extended service life of machinery and vehicles.

Read more...









While every effort has been made to ensure the accuracy of the information contained herein, the publisher and its agents cannot be held responsible for any errors contained, or any loss incurred as a result. Articles published do not necessarily reflect the views of the publishers. The editor reserves the right to alter or cut copy. Articles submitted are deemed to have been cleared for publication. Advertisements and company contact details are published as provided by the advertiser. Technews Publishing (Pty) Ltd cannot be held responsible for the accuracy or veracity of supplied material.




© Technews Publishing (Pty) Ltd | All Rights Reserved