Overhead cranes as discussed above come very handy to the material handling industries and there are different specifications based on which they operate. In this article, we will be seeing some important specifications of overhead cranes which everybody must know

Overhead Crane Capacity

Load is an important criterion to assess the crane’s operating ability since it relates to the crane’s ability to lift a weight, which should include the quality of the sling and iron pole or container. EOT Crane manufacturers commonly refer to it as the rated weight and is denoted by the letter “Q.” The weight – beginning unit was formerly designated as “t,” but is now designated as “kN.” The weight of the crane fluctuates as the operating range of the crane changes. As a result, the rated weight includes the maximum weight as well as the maximum lifting weight.

Working Class

The horizontal distance between a crane’s central axis and the centre line of a hook under the rated weight is referred to as the working range. The radius of gyration or the radius of work are two terms used to describe it. The symbol for it is “R,” and the unit is “m.” The working range is the crane’s working range while it is not shifting.

Lifting Torque

The lifting moment is calculated by multiplying the crane’s lifting weight by its amplitude. The t*m unit of lifting torque was previously used. It is now written as kN*m. It is a crane’s total lifting capacity characteristic that can correctly and thoroughly depict the crane’s lifting capacity. Because the tower crane must operate over a wide range, the model’s key parameter is the lifting torque. The lifting torque of a tower crane generally refers to the greatest amplitude lifting moment.

Crane Lifting Height

The lifting height is the distance from the ground to the hook and the centre of the hook, and the rated lifting height is the calibration value of its parameters. From the centre of the hook to the ground, the rated lifting height refers to the rise of the hook to the maximum limit of the complete weight. The lower depth of the ground below the earth is termed the lower depth when the hook has to be hoisted below the ground, and the total lifting height is the sum of the lifting height and the lower depth.

Crane Working Speed

The crane’s operating speed comprises lifting, amplitude altering, turning, and walking speeds. The unit for the rise and rise speed of the lifting speed is “m/min,” which refers to the rising or lowering speed of the lifting hook. The crane’s lifting speed is tied to the hoisting mechanism’s lifting speed, which is related to the hook pulley group’s ratio. The single rope is twice as quick as the double rope; the rope is twice as fast as the rope. In general, the lifting speed parameter should be specified, as well as the number of ropes.

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Let’s take a look at the top 5 questions that you must ask your crane builder.

What is your experience with this type of application?

Experience plays a pivotal role in every industry and the same goes well in custom cranes for your application. Check the portfolio of your builder and what types of work he has handled previously. An experienced crane builder should know what would be the best for your job site and how he will design a crane that will meet all your requirements. A deft and professional crane builder can take care of everything, including specifications to environmental considerations, and even the number of shifts you are running.

How long will the crane last?

Always try to get the best materials and craftsmanship for your money. Moreover, you can’t also compromise functionality to save money. If your crane is not efficient, then you may face bigger problems in future. Always consider your custom crane as a long-term investment. So, you need to find an option that is best suited for your application.

Certain materials provide better moisture, UV light, and chemical resistance than others. Before committing anything, think about the use of your crane and how material choices could impact the lifespan and quality of your crane. If you choose an experienced crane builder, then from his experience, he will offer deeper insights into how those various materials will impact your crane’s conditions, and how long your crane will last under its expected workload.

What value-added services do you offer to your customer?

To make their customers happy and content, established EOT crane manufacturers in Ahmedabad offer a chunk of value-added services including load testing, OSHA compliance inspection, quality assurance, and many more. A crane manufacturer that always walks extra miles when it comes to their products and customer services will certainly satisfy you with their finished products. Get in touch with versatile manufacturers that support you throughout your crane construction process. A reputable crane manufacturer will never leave you in the middle of the process, he will support you from that first inquiry to your work at the job site.

Any post-purchase cost

Always go for transparent pricing while purchasing a crane for your utility. Before investing a single penny, clearly understand the investment your crane will require. Though overall purchase and installation costs are the major investments, regular maintenance also demands some investment from your end. Regular maintenance is necessary to keep your crane functions optimally as long as possible. Though maintenance costs are negligible as compared to replacement still, you need to keep aside a budget for maintenance and repair.

Different types of cranes demand different maintenance routines, so you should consider these costs before making any commitment. A well-known EOT crane manufacturer in Ahmedabad will offer you various models, their maintenance cost, and any common issues that may arise. Based on this information, you can calculate your budget.

How do the included features and benefits affect the total cost of ownership?

Ask for a crane builder to provide the full list of features and benefits they are proposing in the offer. By purchasing a low-quality crane, you can save some money but it could be unreliable or wear quickly compared to higher-quality products. By discussing the total cost of ownership with your crane builder, you can choose the best features that will provide safety and efficiency for your product.

Building a custom crane is an intriguing endeavour, but you need to choose the right equipment for your facility. Selecting the right crane manufacturer will make the process facile and pleasurable.

Krishna Crane Engineers is a popular EOT crane manufacturer in Ahmedabad that offers custom cranes to clients. By understanding the requirements of the customers, the company offers tailor-made cranes that will satisfy their needs.

To know more about the company, please visit its official website.

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By optimizing hook coverage, you can maximize the crane’s efficiency and flexibility.

How to determine hook coverage

You can determine hook coverage in various ways including,

The side Approach

To determine the crane’s usable lateral working span, you can use this side approach. But this is typically not a symmetrical dimension. The hoist trolley comes with a short and a long side. When installing a crane, you can determine the short and long sides to ensure the side approach span is adequate.

The end Approach

The end approach determines the hook’s centreline coverage, including end-to-end movement. Unlike the side approach, this approach is symmetrical. Based on runway length, the entire span of the crane may be larger than the actual working span. When you need extra hook coverage, a zero-clearance end stop can provide approximately one foot of lateral or centreline coverage. When determining the hook coverage of your crane, you should have adequate knowledge of working space. The floor-to-ceiling height along with walls and objects in the work area may limit the hook’s working span. You should consider any changes and optimizations before the completion of the project. If your project gets completed, optimizing the working span could be an expensive endeavour and may inhibit your daily productivity.

Measuring crane size requirements to maximize coverage

To maximize hook coverage, proper measurements are mandatory. Important measurements include,

Runway beam size

You need to measure the runway beam size from the bottom to the top of the beam. This measurement is useful to determine the approximate system height.

Runway rail size

The runway rail size influences the wheel size of the crane. The runway rail height and width are crucial measurements for your crane. Because these two keep the rails in alignment and get the most longevity.

Crane span

The crane span is the measurement between runways. This generally covers the width of the bay. Exact measurements are mandatory if you want to procure adequate material to form the girders and provide accurate drawings.

Runway length and distance between runway supports

The runway length and runway support measurements go side by side. The supports should hold the weight of the crane relative to the runway length.

Common mistakes

A common mistake that people often commit is not planning far enough into the future. Though you can update your existing crane to improve hook coverage, it is not recommended. Because this can be a time-consuming and expensive endeavour. If you want to improve your existing crane’s hook coverage, you need to replace major components and sometimes rearrange electronics. This can hamper your operations.

To plan for optimal hook coverage, you should have adequate knowledge of your building space, including obstructions on the walls, ceiling and floor. The hook coverage area of your crane is always less than the total span of the crane or length of the runway. You should ask the right questions to your crane builder to avoid change orders and to uplift the profitability of your production.

Always optimize your crane to get the best hook coverage possible, because you may need more coverage than you planned.

As an established EOT crane manufacturer in Ahmedabad, Krishna Crane Engineers has an excellent market reputation. The company designs jib cranes by strictly following the standards of IS 3938 and IS 807. We offer custom cranes that are robust, sturdy and can manage very heavyweights. We used to work for diverse customers from various industries, including manufacturing industries, shipping yards, ports, construction companies, transport and logistics companies.

By visiting the website of the company, you will know more about it.

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Top-running overhead cranes

A top-running overhead crane comes with a fixed rail or track system installed on the top of each runway beam. This encourages the end trucks to carry the bridge and hoist along the top of the runway system. Depending on the application needs, overhead cranes can be two types and they are a single girder and double girder. A single girder crane possesses a trolley and hoists mounted on the bottom, on the other hand, a double girder overhead crane uses a top running trolley and hoist for additional lift height.

Top running overhead cranes are larger than under running cranes. These cranes have higher capacities and can accommodate wider spans. Since the crane is mounted on rails on top of the runway beams, there is no suspended load. This means the installation, service and maintenance are easier and less time-consuming for top running overhead cranes.

Benefits of top running single girder crane

· Typical Load Capacity: 1/4-ton to 20 tons
· Typical Span: Under 65 feet
· Typical Service: Light to medium duty
· These cranes are typically used in light manufacturing, fabrication and machine shops, light assembly line, warehousing facilities, maintenance and repair centres.
· Low deadweight
· Extra overhead space
· Faster hoist and trolley speed
· Lower production cost

Benefits of top running double girder crane

· Typical Load Capacity: 20-400 tons
· Typical Span: Over 65 feet
· Typical Service: Medium to heavy-duty
· These cranes are used in steel and metal mills, coil handling, foundries, large fabrication and stamping facilities, paper mills, casting plants, etc.
· Offers the most overhead floor space
· High speed

Under-running crane

Because of a user-friendly design, under-running overhead cranes provide the utmost versatility and meet all your production needs. These cranes are also known as underhung cranes because the bottom flange of the runway beam offers support for the wheels and encourages the movement of the bridge across the site.

The trolley and hoist of an under-running overhead crane move across the bottom flange of the bridge beam. Under-running overhead cranes are mostly set up as single girders because a double girder design is expensive and may not suitable for your needs and requirements.

Very often, these under-running cranes allow you to maximize your site’s floor space for the production and storage of material. Because these cranes are mostly supported from the existing ceiling corbels or the roof structure.
The service and installation of an under-running crane system are complicated and time-consuming. Since the crane is suspended from the runways, hence, it may take longer to check the alignment or service the wheels of the crane.

Benefits of an under running overhead crane

· Typical Load Capacity: 1/4-ton to 15-tons
· Typical Span: Under 65 feet
· Typical Service: Light to medium duty
· These cranes are used in fabrication shops, maintenance buildings, and manufacturing facilities
· Since they are supported by existing ceiling trusses or roof structures, hence offer to maximize floor space.
· If no runway support columns are needed, then it minimizes material cost.
· Increased end hook approach and bridge beam and hoist are under runway beams

You should have adequate knowledge regarding the advantages of top-running and under-running overhead cranes. This will help you to select the best option for your production needs. You may consult with a reputed EOT manufacturer in Ahmedabad who will guide you on which one would be the most suitable for your applications.

Krishna Crane Engineers is an established EOT crane manufacturer in Ahmedabad that offers various types of cranes including top running and under-running overhead cranes to customers. Our quality assurance program meets the standards for multifarious industries. After analysing your requirements, our experts will offer you an overhead crane solution suited to your project’s specifications.

For more details, please visit the official website of Krishna Crane Engineers

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Mob Cranes

As the name suggests, the mobile cranes are those cranes that can be moved from one place to another. The mobile cranes are further divided into:

• Tire Mounted Cranes: These cranes are fitted with telescopic booms. These cranes are again divided into:
• Rough Terrain Cranes: This is a crane where the boom is mounted on the upper carriage and undercarriage on their four rubber tires. These cranes are designed for off-road pickups.
• All-Terrain Cranes: These cranes can be taken to the highways and they can comfortably run on uneven roads as well.

Tower Cranes

• Tower Cranes are fixed on a single foundation but they have the capacity to work on a larger radius.

Crane Erection at the Site

• Now that you know the types of cranes available in the market, let us tell you how these different cranes can be erected well.

Mobile Cranes

• One of the biggest advantages of working with mobile cranes is that they are not required to be erected at the site separately. However, the cranes above the weight of 100 tonnes have to be erected by removing their counterweights as they have to be taken to the crane separately.

Crawler Cranes

These cranes can be transported to the business site in a dismantled manner. The modern crawler cranes can be erected in the following ways:

• Self Assembly: There are certain crawler cranes that can assemble itself. This simply means that they can be assembled without any human intervention. They use the technique of self-assembly, but it is quite time-consuming.
• Erection with supporting crane: This calls for one of the most popular crane erection technique where one crane needs the support of other cranes for its assembly.

We hope that you are now clear with all the erection techniques for your cranes. For further specific details, you can get in touch with your crane manufacturer Ahmedabad. If you have any difficulty in erecting your crane, the team of Hoist and Crane will be there to help you.

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Counterweight

Each crane that works on this mechanism utilizes the same amount of weight as that of the one it is going to lift when the crane is working on a large radius. The weights that are utilised are assembled at hte rear of the cranes so that the crane can balance the weights well.

In this kind of cranes, you need to ensure that the counterweights are put down when the cranes are not working as the counterweights can have opposite effecting thereby making the crane lose its equilibrium.

Good foundation

Whatever the structure may be, all work on a solid foundation. If the foundation is strong, the structure will last longer. When we talk about such concrete foundation, cranes cannot find an escape. Whether you use a fixed crane or a mobile one, the surface where it is placed should be able to bear the weight. For example, the tower cranes always use a reinforced engineered surface to which they are bolted. For very tall structures, these cranes are even tied up to each floor that provides it with the lateral support.

Training and planning

The entire safety systems of the cranes are not worth until it is operated by an experienced operator. The more trained the operator is, the better are the chances for the crane to lift the loads without toppling. Before the new crane arrives at your business site, proper planning has to be done with respect to who is going to handle the crane, how it is being fixed and so on. The main operator and the assistants must be given proper training so that they can handle the crane even it is malfunctioning. Even if you talk to your crane manufacturer, he will be able to guide you for training.

Software

The modern and contemporary cranes are fitted with sophisticated systems responsible to monitor each movement of the crane. The crane manufacturer in Ahmedabad can limit the capacity of the crane according to the system so that the crane never exceeds the safe lifting capacity. With the help of the software, the crane is controlled properly and it can bear the weight without toppling.

Given these means and methods, it becomes very easy for a crane operator to lift heavy loads and transfer them very conveniently. For further inquiries on this, you should connect with your crane manufacturer in Ahmedabad and know the working mechanism of the crane you are about to purchase.

Reach out to Hoist and Crane in case you have any doubts.

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A hydraulic crane is a piece of heavy-duty equipment that is widely used for lifting and hoisting in heavy engineering industries. Unlike the other varieties of cranes that use electricity or any other fuel for their operation, these hydraulic cranes work on an internal hydraulic system that allows the crane to lift the heavier load very swiftly. These hydraulic cranes are basically, fluid-filled cranes that facilitate the cranes to lift very heavy objects including shipping containers, tractor-trailers and so on who weight is beyond the lifting capacity of any machine.

How do Hydraulic Cranes Work?

The central theme behind the working of a hydraulic crane is that it transfers an object from point A to point B with the help of an incompressible fluid. The engine of the crane powers the hydraulic pump which in turn, applies the pressure in the hydraulic operating system. The pressure created is again redirected in the hydraulic system to the desired location. The whole process is done with the help of some pistons. The main pressure is held by the hydraulic fluid and that is the unique point of a hydraulic crane.

Given the unique system of hydraulic cranes, they are so far better than the electric operated cranes. We have summed up the benefits of hydraulic cranes over the electric ones here:

Electric motors cannot lift the heavy load

The cranes that work of electric motors are not very reliable. They are good for small scale industries and for heavy engineering industries, they cannot be trusted. On the other hand, the hydraulic cranes can lift up to tonnes of weight without any complaints.

Hydraulic systems are more efficient

Needless to say that the hydraulic systems are more efficient. These days from household furniture to heavy-duty bridges to cranes, everything is made with hydraulic technologies. This technology is very efficient in terms of performance.

Hydraulic cranes need less space

As compared to the electric motor operated cranes, the hydraulic cranes need less space. As the cranes need to work on the fluid system, the fluid takes very less space as compared to the electric motors.

Hydraulic cranes can handle changing loads very well

As stated earlier, hydraulic cranes can lift heavy loads. Even if you need to shift a tractor-trailer from one place to another, a hydraulic crane will do that for you.

Hydraulic cranes are more stable

When you change the load capacity of the electric motored crane, it can break down, but with hydraulic cranes this will not happen. They are more adaptable.

We believe the above-mentioned points are sufficient for you to understand the importance and flexibility of the hydraulic cranes. If you wish to handle your heavy machinery well, order a hydraulic crane from the best crane manufacturer in Ahmedabad. For further details, come to Hoist and Crane. Our team is ready to help you.

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It requires big investment while purchasing the overhead crane but while working on this you might face some problems and there are some steps to avoid that problem. Overhead crane requires maintenance regularly so that its life can be increased and then keep its operating efficiently. As you have invested a lot so you also want that it should be protected. EOT crane manufacturer in Ahmedabad has highlighted the five most common problem with the overhead crane which need to be identified and what can be done to prevent them.

Crane accidents are dangerous. The problems in cranes can even lead to loss of lives, and that’s why cranes need to be handled carefully. The property loss is also high yet bearable, but the loss of human life makes it a crucial point to consider. According to EOT crane manufacturers in Ahmedabad, the accidents could be prevented by adequately operating the machines in addition to following all the maintenance chores. Here are the top 7 issues you might face while handling EOT cranes and the ways to avoid them.

Wire rope gets damage and degrade

This is one of the common issue faced while working on overhead crane as sometimes wire rope gets damage and degrade. This happens due to some common reason: Wire rope sometimes gets jumped out of the reviewing system, Broken wires or worn outside wires, Wire may get damaged or corroded at the end connection. Many other operation conditions can also make wire rope damage and degrade. But there are several steps through which it can be prevented from getting damage and that steps are: Inspect the rope before you start working on the overhead crane and if in case there is any damage so take preventive action. Make sure the wire rope should be properly lubricated.

Alignment and crane skew issues

If overhead crane is out of alignment and skewing then it can lead to significant stress and damage to whole crane system. While construction of the crane, forces applied can also cause stress in the crane and hence this type of stress can result in accidents, crane failure, productivity loss and replacement of loss. To prevent from this alignment and crane skew issue crane should be regularly inspected by the service provider and that service provider will inspect and repair the problem before it become bigger.

End truck wheel causing excessive wear

End truck wheels are major components of the overhead crane and every time they require frequent maintenance, replacement or adjustment. As they are used daily hence wheel will naturally wear down and need to be replaced when required. To avoid the problem of end truck wheel, overhead crane should be designed, tested, and regularly inspected by a reputable overhead crane manufacturer.

Electrification system problem

This is the major problem faced by the overhead crane operator as conduction bar and collector connection gets interrupted and this cause control problem. There can be problem with the push button and radio control and blown flushes is also the problem and to solve this problem operator should contact crane service provider immediately and inspect the fault so that it can be solved.

Hooks getting bent or damage

There is load capacity of the hook and if it is above that then hook may start bending or can get damage. Regular check is requiring before starting of the shift. Hooks is one of the major parts of the crane so it should be taken care properly.

Worn And Torn Wire

The wires can become damaged or corroded over time, and that can lead to huge problems. The effect of environment and improper maintenance can also lead to breakage of cables. If you see any corrode part or unraveling of strands visible on the wire, it is advised to stop using the wire immediately to prevent accidents.

Issues With Hooks

The hooks of the cranes can bend and eventually damage because of heavy loads. That said, everything needs a replacement or renovation over time; the hooks must be changed or repaired on time. When the hooks get bent due to overloading, you must replace them. Otherwise, they will break making the huge load fall.

End Truck Wheels

The end trucks become damaged over time, and they get worn out earlier when there are misaligned runways. Whatever the situation is, damaging wheels can lead to massive disasters if not replaced on time. You should be checking the truck wheels regularly and whenever you feel they need a change, go for it without wasting a minute.

Malaligned Runways

How do you know that the runways are malaligned? The strange scraping noise and the movement of wheels are abnormal; there is some issue with the tracks. This issue is very common and requires immediate attention because it can lead to the damaging of several important parts of the crane like truck wheels and others.

Fault In Power Circuit

The large machine requires a considerable amount of electricity to get on the work. The high demand for electricity doesn’t ask for regular fuses, and that’s why you should be aware of the fact that if the fuses are blowing daily, there are down faults in your power circuit. Pay immediate attention and get it corrected as soon as possible.

Poor Contact

If the contact between the contact bars and the collector is weak, there is another electrical problem raising its heads. Oxidization, misalignment, and carbon buildup can lead to such issues. The crane becomes hard to operate, and that’s why you should prevent such problems from occurring.

Electrical Dangers

The operator of the crane should pay keen attention to the whole process; otherwise, he might be putting his life on risk. When the crane isn’t operated correctly, the surrounding can make the whole of the machine becomes electrical, i.e., the electrical current is flowing through the device, and the life of the operator is on risk.

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EOT Crane Full Form (Electric Overhead Travel)

There are various types of overhead cranes, industrial cranes & EOT Crane pdf with many being highly specialised, but the great majority of installations into one of three categories.

1. Top running single girder bridge cranes,
2. Top running double girder bridge cranes and
3. Under-running single girder bridge cranes. Electric Overhead Traveling

What are the different types of cranes?

EOT Cranes

EOT Crane stands for Electric Overhead travelling cranes. This is the most commonly preferred EOT crane that is usually used in load lifting and shifting. They have the parallel runways and the gap is spanned by a travelling bridge. The hoist is mounted on this bridge. These cranes can be operated electrically.

Single girder cranes

The crane consists of a single bridge girder supported on two end trucks. It has a trolley hoist mechanism that runs on the bottom flange of the bridge girder.

Single Girder Cranes are the ones that are used in work units where heavy materials required either shifting or lifting. These cranes are solely used for maintenance and manufacturing purpose. The primary purpose of these cranes is to move heavy materials quickly and conveniently. These cranes offer high durability and can perform very well.

Double Girder Cranes

These are the cranes that have a capacity of 2 to 50 MT. Double Girder cranes can be used all heavy lifting purposes. The hook of these cranes can be lifted up to greater heights when compared to the single girder cranes. These cranes can be used in both interiors and exteriors. This is one of the added advantages of this type of cranes.

Jib Cranes

The Jib Cranes are a budget-friendly option and they will serve you in various ways. These robust cranes are capable of lifting heavy weights with ease. They have a broader reach and can cater to different kind of requirements.

Girder Bridge Cranes

The crane consists of two bridge girders supported on two end trucks. The trolley runs on rails on the top of the bridge girders.

Hot Crane

The hot cranes are ideally designed to use in factories where lifting and shifting of heavy material are carried on. They are not used in construction sites. These cranes are used to handle metal manufacturing process. From refining to dispatching the metal, these hot cranes takes care of the entire work.

Gantry Cranes

The Gantry cranes have a flexible and dynamic design with staunch moving ability. They can be used to carry heavy weighted goods from one place to another with the utmost convenience.

These cranes are essentially the same as the regular overhead cranes except that the bridge for carrying the trolley or trolleys is rigidly supported on two or more legs running on fixed rails or another runway. These “legs” eliminate the supporting runway and column system and connect to end trucks which run on a rail either embedded in or laid on top of, the floor.

Monorail

For some applications such as production assembly line or service line, only a trolley hoist is required. The hoisting mechanism is similar to a single girder crane with a difference that the crane doesn’t have a movable bridge and the hoisting trolley runs on a fixed girder. Monorail beams are usually I-beams (tapered beam flanges).

What is the meaning of EOT Crane?

The Electric Overhead Travelling cranes are the most frequently used cranes in the construction places and in industries. These cranes are operated with the help of electricity and one can operate it either by control room attached to the crane or by a pendant. These cranes have the capacity to lift both heavy and lightweight goods.

Single Girder EOT Cranes Means

The single girder EOT cranes are lighter when compared to the double girder ones and they have only one main bridge. They are mostly used for short period work and they help in lifting light duty loads to be precise one can lift 1 to 20 ton of load with the help of single girder EOT cranes. They are manufactured in both top running and under running models.

Double Girder EOT Cranes Means

Double Girder EOT cranes are used to lift heavy weights. They are a cost-effective option when compared with single girder cranes and are capable of lifting heavier weights. They are compatible with wide pans. They have two main bridges and this makes it robust as well as sturdy in nature.

How does EOT crane work?

The EOT crane works by using electricity and it can be operated with the help of either the driver or the pendant (remote control). The crane is capable of lifting up to 500 tonnes with a span of 60 meters. The universal coupling mechanism is incorporated in these cranes to facilitate both installation and adjustment. The mechanism consists of only four active and driven wheels, if the weight that has to be lifted is more, the wheel pressure is reduced. The articulated frame device will distribute among the four wheels so that the weight doesn’t pressurize only a particular wheel.

Which Crane should you choose – Single Girder or Double Girder

A common misconception is that double girder cranes are more durable! Per the industry standards (CMMA/DIN/FEM), both single and double girder cranes are equally rigid, strong and durable. This is because single girder cranes use much stronger girders than double girder cranes. The difference between single and double girder cranes is an effective lifting height. Generally, double girder cranes provide better lifting height. Single girder cranes cost less in many ways, only one cross girder is required, a trolley is simpler, installation is quicker and runway beams cost less due to the lighter crane dead weight. The building costs are also lower.

However, not every crane can be a single girder crane. Generally, if the crane is more than 15 ton or the span is more than 30m, a double girder crane is a better solution. The advantages and limitations of Single / double girder cranes are as follows:

Single Girder Cranes Works

• Single girder bridge cranes generally have a maximum span between 20 and 50 feet with a maximum lift of 15-50 feet.
• They can handle 1-15 tonnes with bridge speeds approaching a maximum of 200 feet per minute (fpm), trolley speeds of approximately 100 fpm, and hoist speeds ranging from 10-60 fpm
• They are candidates for light to moderate service and are cost effective for use as a standby(infrequently used) crane.
• Single girder cranes reduce the total crane cost on crane components, runway structure andbuilding.

Double Girder Cranes Works

• Double girder cranes are faster, with maximum bridge speeds, trolley speeds and hoist speeds approaching 350 fpm, 150 fpm, and 60 fpm, respectively.
• They are useful cranes for a variety of usage levels ranging from infrequent, intermittent use to continuous severe service. They can lift up to 100 tons.
• These can be utilized at any capacity where extremely high hook lift is required because the hook can be pulled up between the girders.
• They are also highly suitable where the crane needs to be fitted with walkways, crane lights, cabs, magnet cable reels or other special equipment.

EOT CRANE CONFIGURATION

1. Under Running (U/R)
2. Top Running (T/R)

EOT Crane Working Principle

There are three working movements of EOT Crane- crane hook up and down lifting, trolley lateral movement and crane long travelling longitudinal motion.

The motor exhibits a driving force of the hoisting mechanism. This transmits the power to high-speed shaft end. The ring gear transmits the driving force and then with the help of pulleys and wire ropes the crane hook is driven up and down. Similarly, the half gear coupling, its joint and compensation shaft will help in rotating trolley wheels.

Under running cranes

Under Running or underslung cranes are distinguished by the fact that they are supported from the roof structure and run on the bottom flange of runway girders. Under running, cranes are typically available in standard capacities up to 10 tons (special configurations up to 25 tons and over 90 ft. spans). Underhung cranes offer excellent side approaches, close headroom and can be supported on runways hung from existing building members if adequate.

The Under Running Crane offers the following advantages:

• Very small trolley approach dimensions meaning maximum utilization of the building width and height.
• The possibility of using the existing ceiling girder for securing the crane track.

Following are some limitations to Under Running Cranes

• Hook Height – Due to Location of the runway beams, Hook Height is reduced
• Roof Load – The load being applied to the roof is greater than that of a top running crane

Lower Flange Loading of runway beams require careful sizing otherwise, you can peel the flanges off the beam.

Types of EOT cranes catalog

There are various models of EOT cranes available in the market. If you want to know more about these types of cranes, their specifications and decide which one among them is your right choice, just download the catalog. It has everything you want to know about EOT cranes.

EOT Crane Catalog

Double Girder EOT Crane Catalog

Single Girder EOT Crane Catalog

Jib Crane

HOT Crane

MCPB Crane

Electric Wire Rope Hoists

Choosing the Right EOT Crane for Your Needs

Electric Overhead Traveling (EOT) cranes are a versatile and essential tool for various industrial applications. However, selecting the right EOT crane for your specific needs is crucial for maximizing efficiency and safety. This guide explores key factors to consider when making your choice:

1. Capacity:

• Determine the weight of the heaviest load you’ll be lifting and choose a crane with a capacity exceeding that weight for a safety buffer.
• EOT cranes come in various capacities, from handling light machinery to heavy industrial equipment.

2. Span:

• Measure the distance the crane needs to cover horizontally to ensure it can reach all designated lifting zones within your workspace.
• EOT cranes are available in different spans to accommodate various facility layouts.

3. Lift Height:

• Consider the maximum height you’ll need to lift loads.
• EOT cranes offer varying lift heights depending on the hoist design and runway configuration.

4. Duty Cycle:

• Evaluate how frequently you’ll be using the crane. This will help determine the appropriate duty class (light, medium, or heavy) for your crane.
• Choosing the right duty class ensures the crane can withstand the demands of your operation without premature wear and tear.

5. Single vs. Double Girder:

• Single Girder EOT Cranes: Ideal for lighter loads and offer a more cost-effective solution.
• Double Girder EOT Cranes: Provide superior stability and lifting capacity for heavier loads.

For a more detailed exploration of EOT crane types and specifications, consider downloading a comprehensive EOT Crane PDF guide. By carefully considering these factors and referring to EOT crane resources, you can make an informed decision and select the perfect EOT crane to optimize your lifting operations.

Exploring Specialized EOT Crane Designs

While standard EOT cranes offer great versatility, specific applications may require specialized designs. Here’s a glimpse into some unique EOT crane configurations:

• Top Running vs. Under Running Cranes:
  • Top running cranes operate on elevated tracks, maximizing headroom.
  • Under-running cranes travel beneath the runway, suitable for facilities with limited overhead space.

• Monorail Cranes:
  • These cranes consist of a single beam suspended from a track, offering a space-saving solution for lighter loads.

• Stacker Cranes:
  • Designed for automated storage and retrieval systems, these cranes efficiently move and stack materials in warehouses.

• Jib Cranes:
  • Featuring a horizontal arm that extends from a support column, jib cranes offer lifting capabilities in a localized area.

By exploring these specialized options, you can find an EOT crane that caters to your specific lifting requirements and workspace limitations.

Can an EOT Crane Help Your Business? Explore the Benefits and Applications

EOT cranes offer a multitude of benefits that can significantly enhance your business operations:

• Improved Efficiency: EOT cranes streamline material handling, reduce manual labor, and accelerate production processes.

• Enhanced Safety: These cranes promote safe lifting practices by eliminating the risk of worker injuries associated with manual lifting.

• Increased Productivity: EOT cranes enable faster and more efficient load handling, leading to increased overall productivity.

• Versatility: With various configurations and capacities available, EOT cranes can be adapted to handle a wide range of lifting tasks.

• Cost Savings: EOT cranes can reduce labor costs associated with manual lifting and improve overall operational efficiency.

Applications:

EOT cranes are utilized across a vast array of industries, including:

• Manufacturing
• Warehousing
• Construction
• Automotive
• Power Generation
• Shipping & Marine

If your business involves frequent lifting and material handling, an EOT crane can be a game-changer, contributing to a safer, more efficient, and cost-effective work environment.

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Overhead cranes are an efficient way to lift and move high loads which could not be raised by humans. The overhead crane manufacturers in India say that overhead cranes increase safety and help in managing floor space. Significant types of overhead cranes include gantry cranes, bridge cranes, eot cranes and many more. All of these are very functional and are used for different kinds of industries. Some of the industries that use overhead cranes are listed below. The cranes have proved to be the best option to make the loading job safer and efficient.

Storage

The people working in warehouses need to move heavy stuff too often. The crates used to store the items need to be handled safely plus the process is fast. Since they don’t have much time, the overhead cranes work best. A proper network can be managed in such a way that the load is moved and stored correctly.

Automotive

The parts need to be moved from one place to another to combine and form the final set up. The auto parts are heavy and need cranes to move the pieces from station to station. Bridge cranes are used for the lifting and carrying purpose. Small gantries are also used to pull engines and lift bodies of vehicles.

Repair of heavy equipment

The shops that repair heavy equipment also need bridge cranes and gantry cranes. The stuff is unloaded for repairment and then reloaded after the job is done. The cranes are also used to move the equipment in the area around the workshop.

Metal manufacturing

Things such as molten ore and rolls of finished sheets are loaded on cranes to move them. Moreover, the temperature of the metal and surroundings is also dangerously high in the places and to handle such hot metals cranes are used. The workers can work from a safe distance with the specialized functions provided in the modern cranes.

Concrete manufacturing

Can you think of anything lightweight or small in this industry? The answer is no. The workers who work there use gantry cranes in the yards to handle the heavy loads and bridge cranes are used in the factory. Overhead cranes are used to pour architectural spans.

Power plants

The equipment in the power plants needs to be working all the time, and whenever any of the machines need service, the bridge cranes come handy. The generator and turbines in the working plant need to be handled with care, and that’s why bridge cranes are used for moving purpose.

Shipbuilding

The heavy ship hulls are irregular in shape, and that’s what makes the movement even tougher. An overhead crane is used to move massive parts inside the slanted hulls. The development of ship hulls also requires the use of large gantry cranes.

Plastic injection modeling

As we discussed for metal manufacturing industries, there is heavy stuff and extremely high temperature in plastic injection modeling industries too. To perform the jobs safely and precisely, the workers need a strong network of overhead cranes. The overhead cranes help in securely handling the raw and melted materials.

Aviation

Expensive hanger developed in the aviation industry is large in size and heavy. The other parts such as ailerons, engines, and interiors also need to be handled with care. An overhead crane is used to place the equipment and parts on the place. The cranes help them in assembling and repairing.

Transportation

Heavy materials are loaded and unloaded on seaports because of international connection. The sites are the commercial link, and that’s why there is going and coming of enormously larger and heavier packages. The overhead cranes are used to serve on the seaports.

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