Sealing solution meets challenges of larger turbine designs


Global sealing technology expert James Walker has launched a new innovative version of its Walkersele® rotary lip seal, following an in-depth research and development project in collaboration with wind-turbine and bearing OEMs.

The new product, Walkersele® X-Gen, meets the challenges of the increasing size of turbine designs — maintaining effective sealing against deflected shafts or housings and increased offset, plus enhanced retention of sealing forces over the full circumference of the sealing face.

The new patented design of the Walkersele X-Gen incorporates a refined lip design, molded-in finger spring, and innovative fiberglass-reinforced backing. (Courtesy: James Walker)

Walkersele X-Gen also addresses the issues created by the use of high-performance greases for lubrication rather than oil, which brings a new dynamic to the operation of the bearing seal and an additional challenge for any sealing solution.

In cooperation with bearing and turbine OEMs, James Walker has undertaken a comprehensive test program covering all elements of rotary seal design. These include spring retention, lip loading, torque, friction, leakage and wear, plus sealing capability at a variety of significant offsets. Testing was focused on protecting and extending the service life of critical bearing applications and drive mechanisms.

The result is a new patented seal construction specifically configured to optimize sealing capability on large diameters where increased levels of offset from loaded bearings and out-of-round shafts and seal housings can create significant issues.

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