Clamshell grab is a tool which is specially designed and produced to charge and discharge gravel, sand, and other materials. Another additional function is that it is really beneficial for digging activities. The application of the machinery known also hydraulic grab is really flexible. It is executed well whether the shells are opened or closed depending the material types handled. This is more suitable for mining activities in which the shells looked for are not too coarse. We all know minerals like coal, ore, bauxite, and phosphates tend to have smoother structure.
Clamshell and electro hydraulic grab is able to lift materials with capacities up to 85 tons and volume over 60m3. In common, as long as the materials lifted are not too coarse it tends to be easier to handle. The shells are available in some versions including the open, half-closed, and closed. Besides, it works well in the opening direction with various cable patterns.
There are still some other additional values achieved by the grab. It is classified in the high-free digging productivity. Surprisingly, it is lightweight enough for a sort of big machine. The design itself is specifically for handling powdery and dusty materials.
The Ways of Execution
Clamshell grab can be executed well with certain systems. The first is regarding the mechanical rotator for around 270 degree of rotation. There is a standard applied her. It is with about 200 mm high compensation. Meanwhile, there is also another type in which the rotator is for 360 degree of rotation. The second rotation is by means of slewing ring and hydro motor. The last one, the rotator is without any rotation because it is fitted with plate and lifting eyes.
There are some advantages found in the use of clamshell and electro hydraulic grab. As it has been mentioned before, it is quite light in term of weight. It makes the mobilization and keeping process tends to be much easier. Besides, the designs are also quite compact especially for the Electro Hydraulic Orange Peel Grab. The closing cables tend to have longer span compared to other machinery devices for mining.
Another advantage is about the maintenance. You should not worry since the maintenance tends to be simple, without spending too much cost. The minimal maintenance is also for per ton of handled materials. Lastly, the device is environmentally friendly. Therefore, it is really a good choice to put the clamshell grab in the industrial shopping list.