The crankshaft, machined, A1400Pt is offered under part number 10-301-013.
The pump in which it is used is specified as a 7½″ × 10″ triplex mud pump model (Oilwell A-1400-PT).
The A-1400-PT power rating is ~ 1,400 horsepower.
The stroke length for the pump is given as 10 inches in many sources.
Gear ratio is listed as 4.5 : 1 for this pump.