Drive technology specialist, SEW-EURODRIVE is installing four of its large segmented girth gear systems at De Beer’s Venetia Diamond Mine in Limpopo province.
Venetia mine, in operation since 1992, is upgrading its two primary scrubbers and two secondary scrubbers, and the girth gear replacement is an integral element of this project. According to Bruce Farthing, project engineer at SEW-EURODRIVE, the order was placed in 2020, and all four units were manufactured and delivered within six months. This short lead time was achieved despite the global disruptions caused by the COVID-19 pandemic.
“We have planned the installations in close collaboration with Venetia Mine, making sure our teams are ready when the mine’s shutdown periods allow,” says Farthing. “The first girth gear was installed on one of Venetia’s secondary scrubbers in September 2021, confirming the accuracy and duration of our installation procedure.”
The expertise of the installation team was brought to the fore by the scrubber’s specific design. The bearing design in particular makes it impractical to bring the whole drum to ground before changing over the girth gear. Instead, the replacement has to be conducted with the drum in situ, at a height of about three storeys.
“In the first installation, we therefore assembled the girth gear on the ground, lifting it into position once the old components had been removed from the scrubber,” he says. “The challenge, of course, was to ensure no damage to any of the new components, which we managed with careful planning and experienced execution using large overhead cranes.”
These large girth gears measure 5,3 metres in diameter and weigh about 6 tons each. Given the scale of the equipment, the segmentation of the gear makes for easier transportation and handling. He explains that each girth gear is made up of ten identical segments which are easily assembled on site.
“The segments allow for relatively quick assembly with less lifting equipment,” says Farthing. “A further advantage is that individual segments can be kept in stock and used as replacements in the event of a breakdown – keeping downtime to a minimum.”
The second and third installations – to be conducted on the two primary scrubbers – are scheduled for later this year. With the limited time available during a plant shutdown, the installation team adopts a 24 hour work cycle.
The contract includes the supply of SEW-EURODRIVE’s large two-stage industrial gearboxes and the external pinions to drive the girth gear. The motors are coupled to the gearboxes using a fluid coupling on a purpose-built, drop-in baseplate. Smaller gearboxes from SEW-EURODRIVE’s X series range are also coupled to the main gearbox as auxiliary drives for commissioning and maintenance.
Farthing notes that the company’s segmented girth gear systems have recently been a popular choice for South African customers, with six orders being received within about a year. Apart from the four supplied to De Beers Venetia Diamond Mine, SEW-EURODRIVE also recently supplied these solutions to applications in a paper mill and a cement mill.
New motion platform for tube laser processing
Motion Control & Drives
Aerotech has announced the LaserTurn280, a motion platform for laser machining of cylindrical medical device components, offering calibrated accuracy of plus or minus 1 micrometre and designed for integration into high-volume production lines.
Read more...Functional safety in modern factory automation
Motion Control & Drives
Functional safety in modern factory automation allows machines to operate at controlled speeds or hold axes at standstill rather than shutting down entirely. Kollmorgen’s Safe Motion monitor software now supports additional safety-rated encoder protocols, extending these capabilities to precision and linear motion applications.
Read more...Improving material handling with autonomous mobile robots Rockwell Automation
Motion Control & Drives
Autonomous mobile robots offer flexible, AI-driven material handling that adapts to shifting demand, fills labour gaps, and generates the operational data needed to optimise end-to-end facility performance.
Read more...Sinamics G210 versatile drive for continuous motion applications
Motion Control & Drives
Siemens has expanded its drive portfolio with the Sinamics G210, a versatile converter for continuous motion applications that combines motor openness with modular hardware, software options and flexible communication on a scalable OEM platform.
Read more...Trends and outlook for actuators in humanoid motion
Motion Control & Drives
The humanoid robotics industry is shifting from prototype development to early commercial adoption, with electric actuators dominating current designs and materials innovation set to define next-generation hardware. IDTechEx forecasts a 47% compound annual growth rate for humanoid unit sales over the next decade.
Read more...Specialist girder frame trailer solves challenging transformer delivery
Motion Control & Drives
Mammoet used its high-capacity girder frame trailer to transport an oversized Hitachi Energy transformer 130?km by road from Ludvika to Köping Port in Sweden, then completed a RoRo transfer to a heavy-lift vessel bound for China.
Read more...SEW-EURODRIVE to exhibit energy-efficient automation at Propak Cape SEW-EURODRIVE
Motion Control & Drives
SEW-EURODRIVE will showcase its MOVI-C modular automation portfolio at Propak Cape, demonstrating how integrated drive and automation technologies can help processing and packaging companies reduce energy consumption and improve production consistency.
Read more...XPlanar aids innovation in laser processing Beckhoff Automation
Editor's Choice Motion Control & Drives
Aalborg University is among the first in the world to test Beckhoff’s XPlanar intelligent transport system in advanced laser processes, achieving micrometer-precise workpiece positioning and dramatically shorter lead times compared with traditional tool-based manufacturing.
Read more...Sinamics G210X for advanced pump, fan and compressor applications Siemens South Africa
Motion Control & Drives
Siemens has introduced the Sinamics G210X, a frequency converter for pump, fan and compressor applications combining easy engineering, IP55 protection and integrated S2 system redundancy for reliable operation in demanding infrastructure environments.
Read more...Pittsburgh’s Commercial Street Bridge replaced in under 24 hours
Motion Control & Drives
Mammoet used specialist skidding equipment to slide a 10?000 ton replacement bridge into position on Pittsburgh’s Commercial Street in a single day shift, cutting what would have been four years of traffic disruption to just 17 days of closure.
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.
printer friendly version