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Webinar: Liquid handling Event by Festo UK & Ireland

On-line webinar

01/12/2020(10:00-11:00)

How pressure-over-liquid provides precise, accurate and cost-effective throughput Precise and accurate (more)

Southern Manufacturing

Farnborough, Hants(GU14 6TQ)

20/04/2021 - 22/04/2021

Southern Manufacturing and Electronics is the most comprehensive annual industrial exhibition in the (more)

PPMA Show 2021

NEC, Birmingham(B40 1NT)

28/09/2021 - 30/09/2021

PPMA Show 2021 will be the UK’s largest ever event dedicated to state-of-the-art processing and (more)

Advanced Engineering 2021

NEC Birmingham(B40 1NT)

03/11/2021 - 04/11/2021

Join us in our 12th and most important edition to date, as we invite engineers and management from all (more)

SKF delivers its largest sealed spherical roller bearing

SKF delivers its largest sealed spherical roller bearing

SKF's Gothenburg factory has produced the company's largest sealed spherical roller bearing (SRB) to date. The 241/900 SRB is 50% larger and three times heavier than the previous largest SKF sealed SRB.

Destined for a Polysius Polycom 8 roller press at a large copper mine in Peru, the three-tonne 241/900 sealed SRB is dimensionally equivalent to a standard SKF non-sealed version, with inner diameter (bore) of 900mm, outer diameter of 1,420mm and width of 515mm. The seal itself consists of a rubber over-moulded steel plate with the same profile and offering the same characteristics as those currently used with existing SKF sealed SRBs.

The customer’s sealed SRB will be fitted to a horizontal shaft and will operate in extremely dusty conditions, with very fine stone dust from both the desert location itself and the grinding processes posing a major contamination risk. The roller press is a highly loaded application (C/P of 2-3) subject to frequent shock loading; the predominantly radial loads, when coupled with the high level of contamination at the site, poses a significant risk of early bearing failure. SKF’s custom made seal aims to at least double the bearing service life by reducing the risk of contamination in this application significantly.

The actual performance of the seal for this size of SRB remains to be verified in service by the customer, but the same seal design used in smaller SRB sizes has achieved a service life of at least double that of an open, non-sealed bearing. Even longer service lives of around three to five times that of a non-sealed bearing can be achieved with SKF’s 'Three-Barrier' bearing protection solution, which comprises premium SKF sealed SRBs housed within sealed housings containing a barrier grease.

 

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