SKF bearings resist temperatures up to 350°C

Citation

(2008), "SKF bearings resist temperatures up to 350°C", Anti-Corrosion Methods and Materials, Vol. 55 No. 6. https://doi.org/10.1108/acmm.2008.12855fab.006

SKF bearings resist temperatures up to 350°C

Article Type: Industrial news From: Anti-Corrosion Methods and Materials, Volume 55, Issue 6

SKF’s latest, robust Y-bearing units for extreme temperatures withstand an extremely wide range of operating temperatures and aggressive fluids, gasses and particulate matter. The bearings require little or no lubrication, enabling users to reduce maintenance requirements and costs, said SKF.

There are two series of the Y-bearing units available:

1. 1.

   The VA201 range for applications where operating temperatures are between −40°C and +250°C.

2. 2.

   The VA228 series for operating temperatures of between −150°C and +350°C.

The Y-bearings are supplied inside the housing units which feature a spherical outer diameter, which corresponds exactly to the concave seating face inside the unit.

This arrangement enables alignment errors of up to ±5° to be compensated, reducing installation time and optimising equipment performance. The bearings operate at shaft speeds of up to 100 rev/min and feature highly efficient seals designed to protect the bearings and prevent the leakage of lubricants.

Coronet cage – the VA228 bearings feature a specially developed coronet cage, constructed from graphite based material. It effectively acts as the lubricant for extended periods of operation, eliminating the need for conventional greases.

SKF said that this makes the bearings an environmentally friendly option, as no harmful fumes or gases are produced even at extreme temperatures.

The VA201 series bearings, for comparatively less demanding applications, have a conventional pressed steel cage. The cage is filled with a high temperature lubricating paste made from a mixture of polyalkylene glycol and graphite to offer excellent lubricating properties.

The Y-bearing units are coated with zinc and yellow chromate for added protection against corrosion. Each housing bore is coated with lubricating paste and designed so that the effects of shaft or housing misalignment can easily be eliminated regardless of temperature variations.

The units can also be specified with bore diameters of between 30 and 60 mm and can be supplied as a plummer block assembly or with square or oval flanges, making them an extremely versatile unit.

The Y-bearing units are ideal for use in a diverse range of industrial applications in which components are subjected to extreme temperatures, such as ovens, heaters and fans.

More information is available at: www.skf.co.uk