Complex sentence: The crankshaft was a chrome nickel steel forging, running in a combination of roller and ball bearings; a ball bearing at the output side crankshaft end allowed the Albatros to be used in either pusher or tractor configuration.
Split into simpler sentences: The crankshaft was a chrome nickel steel forging, running in a combination of roller and ball bearings. A ball bearing at the output side crankshaft end allowed the Albatros to be used in either pusher or tractor configuration.