The Lifting Capacity of a Chain Hoist
A chain hoist is a device that leverages mechanical advantage to lift heavy loads. When you pull a hand chain on the hoist, multiple internal gears magnify your force and vertically lift the load.
LES USA offers a variety of manual hoists from many different manufacturers with a wide range of capacities and types. We also offer specialty options for low headroom, explosion proof and clean room environments.
Lifting Capacity
The lifting capacity of a chain hoist is determined by the weight it can support and the amount of load being lifted. The chain and hook play the largest role in the hoist’s lifting capability, but the gear system also has a significant impact. The motor size and power output directly influence the hoist’s lifting capacity, as well.
Chain hoists are available in a range of capacities, types and sizes for the construction, utility and industrial markets. Hoists Direct carries chain falls from many different manufacturers with standard lifts of 10, 15 and 20 feet along with specialty hoists to meet specific applications such as low headroom, explosion proof environments or clean room operation.
When selecting a chain fall for a particular application, consider the load capacity, chain hoist lift height and type of attachments. A high safety factor and compact design makes the chain hoist an ideal solution for a wide variety of jobs from small to large loads. It can be used in high production environments such as automotive, as well as dusty and chemical aggressive environments where the chain is lubricated.
In addition to the standard lift options, there are a number of different trolley options available to mount your chain hoist. The most common are plain trolleys, geared trolleys and push trolleys. Consider the environment and job site when selecting a trolley as it will be responsible for moving the load while the hoist is suspended. Always lubricate the load chain and hoist gears according to the manufacturer’s recommendations to reduce friction and extend the lifetime of your hoist.
Weight Capacity
The weight capacity of a chain hoist is the maximum amount of load that the hoist is designed to lift. It is important to carefully consider the weight of the load as well as any attachments and rigging when choosing a hoist. It is also important to consider the lift height when determining the right capacity for your application.
Chain hoists are a mechanical device that use steel cable and pulleys to lift heavy loads. The idea is simple, a big chain wheel turns a smaller wheel that pulls the load. This gives the operator a mechanical advantage that lets them lift the load with minimal effort. They are also different from block and tackle because they lock, which makes them more flexible for a variety of lifting applications.
There are a few different types of chain hoists to choose from depending on your needs. For example, some models are designed to be used for both pulling and lifting and have a low headroom to accommodate tight spaces. They also have an electro zinc plated hand chain for durable operation and a fully machined lift wheel for a smooth long-lasting life.
Other models have sidewinder handles that improve the ergonomics and performance of lifting and pulling. They also have a dual pawl design that allows for easier latch changing and have dry type lubrication that helps maintain the proper chain alignment and reduces wear in harsh environments.
Operation
A chain hoist is a mechanical lifting device that enables workers to lift and lower heavy loads from one point to another. They offer a range of advantages over traditional rope and cable systems. These advantages include improved capacity, speed and safety, as well as reduced costs.
A key element of a chain hoist is the load chain, which webs around the gearing inside the body of the hoist. It is then attached to a hook or other lifting mechanism that grabs the load to be lifted or lowered. When a worker activates the hoist motor, the internal gears start to turn, which in turn causes the load chain to rotate.
Most electric chain hoists have a single disc brake that stops the motor when it’s not in use. However, some models feature a double-disc brake that provides greater stopping power and allows workers to set different levels of braking.
In addition to the break, many models of electric chain hoists have a magnetic overload relay and a thermal sensor that shut off the motor when something goes wrong. They also have an emergency stop button, enabling workers to immediately cut the power if necessary. These features help to make a chain hoist safer and more reliable for industrial applications.
Maintenance
It is important to perform regular maintenance on all equipment, especially in a workplace where the use of potentially dangerous tools like cranes is common. This is not just a good idea, but also required by OSHA to ensure your employees are working with the most efficient hardware possible. Regular testing and inspections will help identify when your chain hoist is starting to show signs of wear and tear and might require a full overhaul or replacement by a professional crane repair service.
A daily visual inspection should be performed by the hoist operator to make sure all components of the equipment are in working order before beginning work. Every month, a more in-depth inspection should be conducted to document any existing wear chain hoist or damage that needs to be addressed. Then, every quarter, a service load test should be performed to observe how the hoist functions when lifting objects of various weights.
Performing regular maintenance on your chain hoist will extend its lifespan and ensure it is always ready for use when you need it most. Routine cleaning and lubrication are critical parts of this process. Using a tacky high-pressure lubricant like Never Seize is recommended to keep the gears free of dirt, grit and rust. Hoists with a gear box should be dismantled and thoroughly cleaned and lubricated every year or so.