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Bearing failures on mine sites occur most often due to contaminants, such as aggregates, iron ore, coal or any mining material penetrating the seal of the housing. This is aggravated by poor maintenance of the equipment, insufficient or excessive lubrication, and incorrect installation.
On a mine site, water is often used to wash down equipment, leaking through the bearings, turning dust into mud, and hindering performance on production lines.
Sealed spherical roller bearings, as Tony Tormey, BSC’s product manager for industrial bearings explains, are the “last line of defence” where bearings are used in dust-prone applications in mining, such as in conveyor pulleys or conveyors in cement mills.
“Bearings in harsh conditions like mining generally have three barriers, which is the housing, the grease and the seal on the bearing. You can also fill the cavity in the housing with grease, which will act as another barrier,” Tormey said. “But despite all that, water or dust can still penetrate the housing, and that’s where sealed spherical roller bearings provide an extra layer of protection to the bearing.”
Case Studies, Environmental News, Industry News, Management, Materials Handling, News, Recycling, Regulation
A concrete and quarrying producer has successfully sought the assistance of a consultancy and engineering specialist on a variety of complex consent applications. Read more
Case Studies, Features, Industry News, International News, Materials Handling, Mobile Plant, News, Screens & Feeders
MacKellar Excavations has been approved to develop an innovative landfill site as extractive operations are progressively completed at its Mary’s Mount Quarry in New South Wales.
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A third-generation family quarrying business is maintaining its commitment to quality across changing seasons through its decades-long preference for sophisticated and optimised vibrating screens and their screen media.
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Polo Citrus has appointed a new national business development manager as it looks to expand and invest in its future and that of the extractive industry.
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Archaeologists from the University of Texas Arlington (UTA) have found obsidian flakes at the bottom of Lake Huron in North America, more than 4000 kilometres away from their quarried source in Oregon.
Case Studies, Drill & Blast, Features, Maintenance Products, New Products, News, Safety
An earthmoving giant celebrates its centenary – with a keen eye on the next 100 years. Damian Christie reports.
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How you drill and blast your aggregate can be vital to how it is processed and refined downstream. Steve Price, of Impact Drill & Blast, explains why a full rock-on-ground service can ensure an operation’s quarry products smoothly make the transition from the face to the gate.
Attachments, Case Studies, Conveying, Industry News, International News, Maintenance, Maintenance Products, Management, Materials Handling, New Products, News, Plant & Equipment
For efficient classification, screens need to generate more acceleration than a rocket being launched, while also being lightweight and energy-conserving. Gary Styger and Steven Hunter, of Weir, explain how OEMs are successfully employing modern design tools to create economical, yet more effective screens.
The Poplar Lane Quarry in New Zealand has taken advantage of Flexco’s HV pre-cleaner and ceramic pulley lagging to combat issues it faced after commissioning a modified plant.