Features 1?Power end features
Continuous tooth herringbone gear. One-piece alloy steel crank.
Renewable crosshead guide. The frame is made of welded steel plate
to provide the frame with high strength, good rigidity and
lightweight. The extension rod packing is of duplex seal structure
to provide the good seal result. The power end uses the combined
lubrication system of forced lubrication and splash
lubrication. 2?Crankshaft
The crankshaft is made of cast alloy steel and is furnished with
big geared ring, connecting rod and bearing. The tooth form of the
big-geared ring is herringbone gear. The gear bore and the
crankshaft surface is interference fitted and they are both
fastened with bolts and lock nuts. The big end of the connecting
rod is mounted on three eccentric straps of the crankshaft through
single row short cylindrical roller bearings and the small end on
the crosshead pin through double row long cylindrical roller
bearing. Double row radial spherical roller bearings are mounted at
both ends of the crankshaft. 3?Cylinders
Cylinders are made of forged alloy steel. Three cylinders of each
pump are interchangeable. Valve-over-valve (through type cylinder)
design reduces the cylinder volume and promotes the volumetric
efficiency. At customers’ request, the cylinder surface may be
nickel plated to improve the abrasion resistance.
