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The arm of a crankshaft attached to a connecting rod and piston.



Related Terms

BOTTOM END BEARING

A bearing at the larger (crankshaft) end of a connecting rod in an engine.
Made of cast steel and each consist of an upper and lower part secured to the connecting rod by means of fitting bolts, the nuts of which are secured. Compression shims are provided between the bottom end bearing and the palm of the connecting rod.
The bearings have white metal bearing surfaces provided with lubrication grooves for the necessary supply of lubricating and cooling oil. Shims of different thickness are inserted between the shells to enable adjustment of the bearing clearances (approx. 0.20-0.30mm).

BIG END BEARING

A bearing at the larger (crankshaft) end of a connecting rod in an engine.
The bearings are made of cast steel and each consist of an upper and lower part secured to the connecting rod by means of fitting bolts, the nuts of which are secured. Compression shims are provided between the bottom end bearing and the palm of the connecting rod.
The bearings have white metal bearing surfaces provided with lubrication grooves for the necessary supply of lubricating and cooling oil. Shims of different thickness are inserted between the shells to enable adjustment of the bearing clearances (approx. 0.20-0.30mm).

PUSH ROD

A steel rod that when displaced by the camshaft moves the rocker arm of an overhead valve engine.

DEAD CENTER

  1. A position of a crank in which the turning force applied to it by the connecting rod is zero; occurs when the crank and rod are in a straight line. 2. A support for the work on a lathe which does not turn with the work.

CRANK WEB

The arm of a crank connecting the crankshaft to crankpin, or connecting two adjacent crankpins.

PISTON PIN

A cylindrical pin that connects the connecting rod to the piston. Also known as wrist pin.

HARD ARM

An articulated metal arm used at terminal jetties to connect shore pipelines to the ship’s manifold.

HYDRAULIC CYLINDER

A hydraulic actuator of linear type. Consists of sealed cylindrical body with oil admission ports and piston connected to actuating rod. Direction of linear piston & rod movement depends on which side of piston working fluid supplied.

LUG

As applied to boiler suspension, a steel eyepiece fitted and riveted or welded to the curvature of a boiler shell or drum and connected by a steel U-bolt or sling rod to overhead steel structure; used to support the weight of a boiler.

TIE ROD

A tension member between buckstays or tie plates.

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