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Just One More... RV Suspension Uses Non-Metallic Bearings to Cut
Maintenance Duralon bearings support the journal bar on which the beam assembly pivots, allowing greater wheel travel and smoothing the trailer's ride. A unique recreational vehicle (RV) suspension system that uses rubber shear springs and specially valved shock absorbers also incorporates non-metallic bearings to eliminate the need for lubrication and to provide the rigidity needed to maintain wheel alignment. Beam construction used in the design allows vertical wheel travel up to 5.5 in., compared to two or three inches for most leaf springs. Because the independent suspension has no axle, each wheel reacts individually to road conditions. Each wheel suspension unit mounts on a hanger assembly that attaches directly to the frame, providing a mount for the rubber springs and beam assembly. The MOR/ryde independent suspension system, by MOR/ryde International, Inc., Elkhart, IN, is designed for use on travel trailers and fifth-wheel trailers, either as a replacement for existing suspensions or as an installation on new units. As an alternative to leaf springs, rubber springs offer greater ride smoothness, while the suspension's beam assembly allows maximum wheel travel to further smooth the trailer's passage over rough roads. Compared to air springs, rubber springs are simple and do not require a compressor, accumulator or proportioning valves. No mechanical tuning is needed after installation, although a simple four-bolt adjustment allows for automotive-style toe-and-camber wheel alignment if necessary. Duralon bearings are located at the leading edge of each beam assembly, where both an inner and an outer bearing support the 2-in. O.D. steel journal bar on which the trailing beam assembly pivots. The bearings, constructed from a filament-wound fiberglass epoxy resin matrix with a woven Teflon and polyester fiber bearing element, are manufactured by Rexnord Corporation, Downers Grove, Il. Since they are not susceptible to galling and seizing, they are better suited to handling the pivoting motion of the suspension components than rotating element bearings. Duralon bearings are also extremely rigid and strong, so they won't compress and affect wheel alignment. -- FR For more information: Circle 602 - Rexnord Corporation or connect directly to their website via the Online Reader Service Program at [dfx/incl/99dfx.htm] |
