MechChem Africa April 2020

⎪ Power transmission, bearings, bushes and seals ⎪

Above: Planetary gear motors with integrated brakes are equipped with a release system for free-slew mode. Centre: Features of Leroy-Somer’s hoisting induction motor range include: high-speed for greater productivity; low inertia for smoother start/run/stop operations; and reduced maintenance requirements. Right: Leroy Somer gantry crane drives feature helical geared motors with an integrated brake driven via a shrink disc.

industry. Leroy Somer drives and motors solutions aredeveloped together tomaximise energysavingsandperformance.Forexample, Dyneo ® permanent magnet solutions and IE2/3 induction solutions, combined with variable speed drive technologies, offer the highest levels of energy saving. In addition, the company offers a com- pact, energy and fuel-saving system called RISGA for diesel electric rubber tyre gantry

(RTG) and mobile harbour cranes (MHC). This system, which is easy to install in new or existing crane cabinets, is designed to manage the generator, allowing its speed to be reduced when idling, while still supplying auxiliaries such as lighting and heating. Fuel consumption savings of approximately 50% are achieved when the crane is idling. Other benefits include fewer refuel stops, reduced wear and extended life of the diesel engine,

All iglidur materials are tested by igus in its own 3 800m 2 test laboratory usingmore than 15 000 application-related tests per year.Thecollectedfindingsareincorporated in the online selection aids such as the igli- dur expert. In the test laboratory, iglidur E7 was impressive in the pivot test at a speed of 0.01 m/s under a load of 1.0 MPa on all shafts, with a very low coefficient of wear of 0.3 to 0.8. Currently, iglidur E7 is available as a plainbearing in12 standarddimensions, but customised designs according to customer specifications are available on request. www.igus.de generator and electrical auxiliaries. Emission and noise levels are also reduced. Through Vert Energy’s comprehensive range of high-performance products and extensive experience in port equipment automation solutions, the company is able to offer port operators faster turn around and delivery of cargo, while increasing productiv- ity, improving safety and enhancing energy efficiency. q

iglidur E7 polymer material used in plain bearings Motion plastics specialist, igus, is expanding its plain bearing rangewith its newand very abrasion-resistant material, iglidur E7. further development of thematerial for igus’ plain bearing range.

The iglidur E7 bearing is specifically designed for low to medium loads in pivot- ing movements and can withstand surface pressures of up to18MPa inmotion. “Due to the very low coefficient of friction of iglidur E7, the drive energy is reduced, saving costs for the user,” explains Stefan Loockmann- Rittich, business unit manager of iglidur plain bearing technology at igusGmbH. The new plain bearing material is ideal for flap or sensor bearings and other suitable ap- plications can be found in packaging, textile machinery and furniture technology.

With specifications such as low coef- ficient of friction and excellent vibration dampening, the tribo-polymer, iglidur E7, has already proven its strengths in the sliding elements of drylin linear technology from igus. Now the plastics specialist has also included the material in its plain bear- ings catalogue. This allows users to benefit from iglidur E7’s low energy properties for rotating or pivoting applications. The low coefficient of friction of the material ensures smooth movements, reduces the required drive energy and saves additional costs. In times of advancing automation, du- rable, cost-effective and, above all, energy- efficientmachine components are called for. igus has been developing tribo-polymers for plain bearing technology that are free of lubricants – and therefore free of main- tenance – since 1983. Iglidur E7 is among a total of 57 iglidurmaterials for various appli- cations in the company’s product range. The tribo-polymer has been used in the sliding elements of drylin linear systems since2012 andhas been available indryspin lead screw nuts since 2018. E7 has already proven itself in ap- plications such as camera lenses, train doors and even 3D printers. Above all, the vibration-dampening specifications of the tribo-polymer are convincing, leading to the

Proven and new at the same time: the vibration-dampening and abrasion-resistant iglidur E7 tribo- polymer from igus is now also available as a plain bearing. Pic: igus GmbH

April 2020 • MechChem Africa ¦ 9