Other than the Delaware & Hudson's application of SKF roller bearings to the drivers, main and side rods of their own 4-6-2 locomotives in 1924 (the world's first), Alco built the first production steam locomotive in North America to use roller bearings: Timken 1111, a 4-8-4 commissioned in 1930 by Timken Roller Bearing Company was used for 100000 miles on fifteen major United States railroads before it was purchased in 1933 by the Northern Pacific Railway. (