... (frame, pinion shaft, crankshaft, crosshead and extension rod ) Continuous tooth herringbone gear. one-piece alloy steel crank. Renewable crosshead guide ... furnished with herringbone gear, connecting rod and bearing. The tooth form of the big geared ring is herringbone gear. The ... alloy steel on which a herringbone gear with the medium-hard tooth surface is machined. For easy maintenance, the single row ...