دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: on a crankshaft, the highly polished and accurately machined portion of the crankshaft to which a piston rod is attached.

n: 1. a metal shaft that joins the piston to the crankshaft in an engine. 2. a metal shaft in a mud pump, one end of which is connected to the piston and the other to the pony rod.

n: 1. a sucker rod, shorter than usual, used to make up a sucker rod string of desired length. Pony rods are usually placed just below the polished rod. 2. the rod joined to the connecting rod and piston rod in a mud pump.

a short rod for spacing out a rod string.

n: the mechanic driving part that the driving force transmits to the piston rod.

n: on an engines piston rod, a part on the bottom of the rod that is bolted onto the top part of the rod. To install a piston rod onto the crankshaft, one half of the rod bearing is inserted into the top part of the rod and the other half into the rod cap. The top part of the rod and the rod cap are then placed on the crankshaft and the cap bolted to the top part.

n: a scratch on the surface of a sucker rod or a piston rod.

n: The loss caused by the leakoff of high pressure liquid at the gapping of piston and cylinder liner,valve and valve seat or piston rod and where its sealed.

n: in an engine, the hard steel, hollow cylinder that attaches the piston to the piston rod. A circular opening in the piston is lined up with a corresponding circular opening in the rod and the wrist pin is pushed through the openings. Usually, special keys on each end of the pin lock the pin in the piston. Also called piston pin.