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Crankshaft weights

At low engine speeds, it is generally not necessary to provide a balance weight to counteract the rotating mass of the crankpin (crank pin) and the part of the mass of the connecting rod that can be considered able to rotate together with the crankpin . However, the forces exerted by these rotating masses increase proportionally with the stroke of the shaft and the square of the motor speed.

Provision, with the increase in engine speed, also increases the need to offset the crankshaft. The number of shaft counterweights used on a crankshaft can vary. For example, some trees are a pair of counterweights opposite to each crank pin, while the other shafts are elbow not satisfied as many.

By placing counterweights on opposite sides of the connecting rod pins, it is possible to compensate for external moments, to minimize internal moments and therefore to reduce the amount of vibration and stress in the bearing. The result is a smoother, more durable engine.

Depending on the operating conditions and other factors, such as the desired bearing life of the crankshaft, different quantities of scales can be used to provide different advantages in terms of engine performance. Consequently, the dimensions and the mass of the counterweight of the crankshaft can vary.

Tungsten alloy is an excellent material for use in balancing the crankshaft. All engines require perfectly balanced crankshafts to ensure optimized performance. If a crankshaft is not properly balanced, the consequences can be serious, including shortened life,
excessive vibrations and a loss of power from the engine.

This becomes even more important in high-performance engines and high-power diesel units. The stresses caused by the imbalance of these motors can cause early failures. The high density of the tungsten alloy means that it can be used to produce compact and highly durable weights for use in balancing the crankshaft. The tungsten alloy crankshaft weights can be positioned at the precise point where they are needed to provide optimum performance.

The fact that tungsten alloy drive shaft weights are smaller than equivalent steel weights also means that external balancing may not be necessary in engines where interior space is limited.