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Why Choose Cast Iron Counterweight Instead Of Concrete Counterweight?

Apr. 07, 2021

Why Choose Cast Iron Counterweight Instead Of Concrete Counterweight?

Cast Iron Counterweight Suppliers will share this article with you.

Counterweights are part of various large machines that handle huge loads. By balancing the weight, they ensure the safety performance of tractors, forklifts, cranes, excavators, etc. Manufacturers prefer to use all cast iron, all concrete or a mixture of concrete and metal blocks. For example, forklift counterweights are usually made of metal to maximize space utilization. However, some industries, such as agriculture (tractors) or off-highway (excavators and cranes), have the need to balance weight, which can be met by metal and concrete. Although concrete is cheaper than iron, it is wiser to choose iron, because the application of concrete is prone to many problems and cast iron counterweights can be overcome.

When carrying heavy objects, the forklift needs to increase the weight to ensure balance.

Increase the forklift counterweight to prevent the forklift from tipping over. Although the counterweights used in the material handling industry are much smaller than those used in the off-highway industry, they should have the required weight.

In addition to design, every manufacturer should focus on the choice of materials.

Cast iron counterweight is the best choice. Due to the relatively small volume of the forklift, the counterweight must have the best space utilization and provide the necessary counterweight. This can only be achieved with high-density materials, such as metals, especially gray cast iron.

Cheaper materials, such as concrete or a mixture of concrete and metal blocks, cannot achieve this goal because they take up more space with the same weight. Concrete will need to add aggregates or scrap metal blocks, projectiles or steel bars to make it denser. However, the density of cast metal is often higher than that of aggregate or mixed concrete.

The advantages of cast iron counterweight compared with concrete counterweight:


Cast iron is denser than most materials, so the average density of cast metal used for counterweights is three times that of pure concrete. Compared with concrete, this allows iron to reach the target weight in a smaller space and volume, thereby eliminating the cost of additional materials.

Product Cost

The density of concrete can be increased by adding dense aggregates such as limonite, hematite, or magnetite or metal scraps into the concrete mixture. This greatly increases the cost of concrete, but its density is still lower than that of iron.


Cast iron is indeed stronger and harder than concrete, automatically making the balance more resistant to impact and strain, and ensuring a longer fatigue life against cyclic stress. Usually counterweights require screws to fasten or install additional equipment. The concrete surface is easy to crack and it is difficult to support any additional building.


In situations where the counterweight needs to be suitable for a specific shape, for example, the tractor luggage counterweight has different shapes according to the space on the tractor's rear axle; it becomes more expensive to carve the desired shape on the concrete. When a thinner shape is formed on cast iron, the possibility of cracks is less.

Environmental impact

Cast iron is a recyclable product and does not require the extraction of any new raw materials, which is not the case with concrete.

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