crankshaft


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Related to crankshaft: flywheel

crankshaft

a shaft having one or more cranks, esp the main shaft of an internal-combustion engine to which the connecting rods are attached

Crankshaft

 

a shaft consisting of one or more cranks and several coaxial crank journals resting on bearings.

Each crank of the crankshaft has two flanges and a journal for attaching a connecting rod. The axes of a crankpin are displaced relative to the axis of rotation of the crankshaft. In order to balance the crankshaft in operation, the flanges often have counterweights. The crankshaft is the rotating unit of a crank gear; it is used in piston engines, pumps, compressors, and forging and pressing machinery. In piston engines, the number of cranks on the crankshaft is usually equal to the number of cylinders, the arrangement of the cranks depends on the operating cycle and the conditions for counterbalancing the engine and arranging the cylinders.

Crankshafts are made whole, cast, or forged of carbon steel and alloy steel or high-strength cast iron. However, since antifriction bearings cannot be used with whole crankshafts, built-up crankshafts are sometimes made. Depending on production conditions, large crankshafts (journal diameter, to 1 m) can also be of built-up design. The simplest crankshafts to produce are those in which the axes of all of the crankpins are located in a single plane. The simplest crankshaft is the crank.

crankshaft

[′kraŋk‚shaft]
(mechanical engineering)
The shaft about which a crank rotates.

crankshaft

crankshaft
The central component of a reciprocating engine, a high-strength, alloy steel shaft with a hardened and polished bearing surface that rides the bearing in the crankcase. The propeller of an aircraft and the rotor transmission system of a helicopter is driven by the crankshaft.
References in periodicals archive ?
At the same time, none of these conventional technologies can be used onboard the ship to fully build up worn crankshaft crankpin journal surfaces.
To determine the stresses of crankshaft bearing, it is necessary to specify the planes on which the forces determining these stresses act.
As the name would imply, the crankshaft deep-fillet rolling machine rolls or "cold works" the fillets or undercuts located at each end of a crankshaft's bearing surfaces.
will allow Sumitomo Metals to respond to both the expansion of the forged crankshaft market and the global strategies of auto makers.
To do so is unnecessary and could cause the clutch to come off the crankshaft.
At present, part of the plant's production capacity is used to manufacture crankshafts for the Volvo Group's automotive medium-duty engine platform.
Further, the CASCO cassette seal power loss level is unchanged when increasing crankshaft diameter while other crankshaft seal designs show increasing power loss behavior.
Pre-Qualification Criteria: FIRM SHOULD HAVE CAPACITY TO MAKE DIE REQUIRED FOR THE CRANKSHAFT FORGING.
The Global Crankshaft Industry Report 2015 is a professional and in-depth study on the current state of the crankshaft industry.
Key words: in-situ crankshaft renovation, laser build-up welding technology, thermal spray
The derailment was caused when the rear axle passed over it, but the engine was well within a 400,000 mile limit for checks on the crankshaft.