The Difference Between Electric Chain Hoists and Manual Chain Hoists

Understanding Chain Hoists

A chain hoist is a very useful innovation which is essentially a piece of equipment used to lift and lower heavy loads. It is commonly found in various workspaces such as factories, plants, construction areas, and warehouses. It is also characterised by a heavy-duty chain. Due to its efficiency and high carrying capacity, the the crane spares you the hassle, stress and time spent in lifting heavy items.

How Does An Electric Chain Hoist Work?

Electric chain hoists have an induction motor and a brake to ensure the load is held when lifting (enabling heavy objects/loads to be lifted safely). The motor converts electrical energy into mechanical energy which can then lift the load/weight. It has a brake that has an interlocking mechanism in combination with a motor that operates in a unique way. When the electric chain hoist is in operation the energy supply to the brake will be released, but when the motor is off, the supply is automatically provided and the brake will resume – to ensure that the crane load can be held. The hassle, stress and time spent in lifting heavy items are virtually removed.

How Does A Manual Chain Block Work?

A chain block (also known as a hand or manual chain hoist) is a mechanism used to lift and lower heavy loads using a chain. Chain blocks contain two wheels which a chain wound around. When the chain is manually pulled, the chain winds around the wheels and begins to lift the item that is attached to the other end of the chain. Chain blocks can also be attached to lifting slings and chain bags to lift the load more evenly. This is a fully manual process, whereas the electric hoist is capable of lifting far greater weights and with more ease.

What Are Chain Blocks (Hand Chain Hoists) Used For?

A chain block is used in many different scenarios. You will often find them in car mechanic workshops to assist with loading and unloading car engines. This is the perfect application as it would normally require a number of persons and manpower, but with a chain block (hand chain hoist) you can perform a task such as this with one person, making it very efficient. Most places where chain blocks exist will have infrequent use, or can not justify the cost of an electric chain hoist.  They are even used in manufacturing production lines or to winch vehicles when they have encountered tough terrain.

What Do Electric Chain Hoists Do?

The electric chain hoist is the one found in most industries around the world. It operates on two different supply voltages available in South Africa: 525V and 380V. The 525V version is usually found in mines and larger industrial operations, while the 380V is the de facto industry standard. A determining factor when choosing an electric chain hoist is the speed required. A single-speed operation is the most common and is used under what are considered ‘normal’ lifting and lowering applications. A dual-speed operation, is used when more precise movements are required.

What Are The Benefits Of An Electric Chain Hoist?

Electric chain hoists are inexpensive compared to cranes. They are hassle free and they can be easily operated with simple controls. They offer high-efficiency, at an affordable cost even in demanding conditions. They will ensure a smooth and steady vertical lift, with a high degree of precision and make light work of heavy objects when compared to a manual hoist.