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Georg F. W. Schaeffler is one of the owners of Schaeffler Group, one of the world's largest producers of roller bearings.
It was unique amongst the 842-strong class in that it featured outside Stephenson link motion in addition to other experimental features; a double chimney, Timken roller bearings throughout and electric lighting.
Other changes included the use of roller bearings for the crankshaft, forged (rather than cast) rear suspension components, and the chassis was designed to run with hydraulic dampers from the outset.
Other modern features included SKF roller bearings on all axles and the innovative, lightweight SCOA-P type driving wheels, which were specially developed for the R class by the Steel Company of Australia.