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The Role of Overload Indicators in Crane Safety

The Load Moment Indicator, LMI, pairs with a crane operators’ expertise by improving the safety and balance of the crane equipment. It allows crane operators, riggers, managers, and signalers to understand load and height limits.

Modern cranes come with preinstalled configurations for LMI systems; however, these cutting-edge crane safety products can also be added to old crane models. LMI systems are effective for improving warning controls and crane stability. They offer screen displays that allow crane operators and managers to keep tabs on the crane function and surroundings.

Let’s delve deeper to understand the key role of LMI systems in improving crane safety.


Sensory Devices: A Must-Have Crane Safety Tool


LMI, AKA Load Moment Indicators, are sensory crane safety devices that monitor, assess, and notify crane operators about equipment overloading and inefficiencies. They keep the load weight aligned with an equipment’s rated capacity and continuously take readings. This allows crane operators to make sure that their crane isn’t overloaded.

Overhauling cranes are the leading cause of deadly crane accidents at construction sites. They cause crane accidents such as load tip-overs, material collisions, fallouts, and even overturns.

LMI readings change continuously as an operator moves the equipment. From starting the engines to lifting and unloading equipment, LMI ensures a foolproof check and balance of rated and weighted capacities. It immediately warrants signals in case of a collision, overload, or excess hoisting. LMI systems come with audible alarms and LED warning lights that keep operators and all other worksite employees informed about crane operations.


Offers Critical Information


LMI systems not only warn crane operators and managers about overloading. These advanced crane safety tools also ensure that complicated information such as operating codes, boom angles, jib angles, and load lengths are timely communicated to the operators.


Make Inspections Easier


With LMI and RCI systems by leading crane safety equipment manufacturers like RaycoWylie, crane operators can optimize daily inspections. LMI system data can be stored to refer back for inspection purposes.

With LMI systems, it’s easier to check boom angles and load limits and set manufacturer-recommended settings to avoid accidents. What’s more, LMI systems can be synced with computers, thereby making them easier to operate without causing functionality deviations. Using the data stored in LMI system storage folders, crane managers can make sense of whether or not their equipment needs tuning, servicing, or a professional inspection.

Looking for a Robust LMI System? Choose the i4500 LMI-RCI Available at CWSA


If you’re new to crane safety equipment, especially to RCI-LMI systems, we recommend you to choose the RaycoWylie i4500 rated capacity and load moment indicating system.


Its benefits and features include, but aren’t limited to:

  • It can be configured to all types of hydraulic and lattice boom applications

  • It comes with an option to configure loading charts to computer systems

  • It can be bought as an RCI, LMI, or a dual hybrid system

  • It comes with a built-in processor which can be easily installed inside a crane cab

  • Features A2B (Anti-Two-Block), wind speed, and wind direction monitoring capabilities

  • Offers various monitor display size options along with camera displays

  • Data can be stored, categorized, and downloaded via USB

  • Easily optimizes input and output on the CAN bus network

Load Moment and Rated Capacity Indicators can substantially improve the productivity of your crane safety. At Crane Warning Systems Atlanta, we stock RCI and LMI systems for all types of cranes. Check out the RaycoWylie moment load indicators and quality LMI and RCI systems, Wind Speed Indicator or get in touch with us right away!

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