SKF expands Explorer range of sealed spherical roller bearings
16 April 2010
SKF has expanded its range of sealed spherical roller bearings, significantly increasing the number of applications for which they can be used. Currently, over 100 sizes are available. Bore sizes range from 25 to 340mm and bearing outside diameters range from 52 to 460 mm.
Sealed SKF Explorer spherical roller bearings have the same load carrying capacity, and in most cases, the same ISO boundary dimensions as corresponding open bearings, enabling applications to be upgraded simply and cost effectively.
With integral seals, these spherical roller bearings are protected against both particle and moisture contamination, enabling them to be relubrication-free in most applications. As the bearings do not require external seals in all but the most aggressive environments, installation is simplified, further reducing downtime and maintenance costs.
Standard SKF Explorer sealed spherical roller bearings feature acrylonitrile-butadiene (NBR) double lip seals and high quality SKF grease. The seals virtually eliminate the risk of lubricant leakage associated with conventional open bearings, minimizing their environmental impact.
A high temperature variant with hydrogenated acrylonitrile-butadiene rubber seals (HNBR) and high temperature SKF grease is also available.
Their self-aligning properties enable the bearings to accommodate misalignment of up to 0.5º between the shaft and housing, without increasing friction or reducing bearing service life.
SKF Explorer bearings provide higher dynamic load carrying capacity than previous designs, enabling design engineers to “downsize” their application. In addition to being high-capacity the sealed variants generally also provide longer service life and improved operational reliability due to the built-in high degree of cleanliness.
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