Ten Things to Know Before Purchasing an Overhead Crane

Ten Things to Know Before Purchasing an Overhead Crane

There are many things to know and understand before purchasing an overhead crane. Your purchase is typical to improve productivity and safety within your facility. Therefore you need to take several things into account before your purchase. The lowest bid does not work in the crane industry. There are too many crane variations, safety requirements, and technological features available today that you will miss the boat on if you go with the lowest bid. Not only that, you may get a crane that is not even suitable for your application. In the end, you will overspend on a crane with specifications that are not needed for your application. I have seen way too many times bids on overhead cranes that have specs way over what the application requires. These specs cause them to pay sometimes double the amount for a crane that does not even fit their application. Before you invest your money into a new overhead crane, take into account these ten items that will not only save you money but will invest in the best crane for your application. A local crane advisor could help you with acquiring the information below.

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1.Environment

The environment is one of the key elements with your crane requirements that often does not get discussed. The environment can change many of the deciding factors on what kind of crane you will need. For example, certain chemicals can make plastic brittle or accelerate metal corrosion. Cutting oils can make neoprene and PVC brittle. Heat and moisture can cause your motors to overheat. You will not pick the right crane without the crane company knowing what the environment is existing. Your crane will need to have special components depending on its application and environment. To know your application you will need to know what you’re picking up, and the site in which the crane operates. Added components will be necessary for specific areas. Particularly conditions with heavy dust, humidity, high or low temperatures, outdoor, indoor, chemical exposure, Light, and even altitude can affect the crane. Outside of the standard range, additional components will be required.

Look out for these items on your application.

1.  Standard Altitude is Below ft (Altitude can affect cooling of electronic components and not allow heat dissipation)
2. Standard Temperature Range is 0˚C to 40˚C
3. Standard Humidity is below 90%
4. Outdoor Applications will require features to prevent damage during rain, snow, ice, heat, wind, and ultraviolet radiation
5. Corrosive or Explosive Chemicals/ Fumes will require added features
6. Heavy dust environments from cutting will require protective added features
7. Heat can liquefy lubricants, and affect motors, and electrical components
8. Cold can freeze lubricants, crack plastic components, and electrical parts
9. Drastic temperature changes can cause condensation and short out electrical components and cause corrosion

2.Duty cycle

ClassificationUseShift operationLoad SpectrumFEMHMICMAA1CmH1Class ALight dutySingle shiftVery light1BmH1Class BLight dutySingle shiftMaximum load lifted occasionally1AmH3Class CLight to medium dutySingle shiftMaximum load lifted occasionally2mH4Class DMedium to heavy dutyOne or two shiftMedium to heavy loads3mH4Class DHeavy dutyTwo shiftHeavy loads lifted regularly4mH4Class D or EExtremely heavy dutyTwo to three shiftHeavy loads lifted regularly

The crane’s duty cycle is going to depend partly on the application. If the crane is a production crane it will probably need a heavy duty cycle. If it is a maintenance crane or a crane used for shipping then the cycle may be shorter. You will need to ask yourself how often will this crane get used every hour and how often will it be lifting near full capacity? Depending on this, different components will be used to make your crane. Electric motors have duty cycles therefore, you want to make sure that your crane has the right motor for the job. Picking a severe duty motor for a light-duty application will cause you to spend well over what is necessary for the application.There are two standards crane manufacturers go by when picking out the right duty cycle. FEM and CMAA. CMAA is the Crane Manufacturers Association of America and FEM is Federal European De La Manutention. This is the standards for design and manufacturing internationally of overhead traveling cranes. Both specifications are written based on the input from the larger crane companies. The difference is that FEM is worldwide while CMAA is for America. FEM will also separate each main part of the crane (hoist, trolley, and bridge) while CMAA specs classify the crane as a whole. To understand these classifications you will also need to understand what a lift or work cycle is. A work cycle is lifting the load, having a rest period where the trolley or bridge is moving, lowering the load, having a rest period again where the trolley or bridge may be moving, and then returning the hook to the starting position.

There are two standards crane manufacturers go by when picking out the right duty cycle. FEM and CMAA. CMAA is the Crane Manufacturers Association of America and FEM is Federal European De La Manutention. This is the standards for design and manufacturing internationally of overhead traveling cranes. Both specifications are written based on the input from the larger crane companies. The difference is that FEM is worldwide while CMAA is for America. FEM will also separate each main part of the crane (hoist, trolley, and bridge) while CMAA specs classify the crane as a whole. To understand these classifications you will also need to understand what a lift or work cycle is. A work cycle is lifting the load, having a rest period where the trolley or bridge is moving, lowering the load, having a rest period again where the trolley or bridge may be moving, and then returning the hook to the starting position.

3. Capacity

Picking the right capacity is very important to extending the life of your crane. Also, it reduces unwanted wear and tear. Capacity requirements will help in deciding your Duty Cycle as well. For example, you may have a product that weighs 10 tons. However, do you have another component that the crane will be picking up that weighs less than 10 tons? It may be ideal to raise the capacity of the crane to 15 tons. Doing so keeps a Class C rating instead of going to a Class D rating. A ten-ton crane maybe your best option as well if most of what you are picking up on weighs five tons. It all depends on the loads they need to take into account. These are not just the maximum weight requirements. You need to also think about any below-the-hook requirements that may be essential to pick up your product. Sometimes the below the hook device can weigh several tons. That could have a substantial impact on the crane requirements.

4. Speed

I would say that out of these ten things to consider, the speeds are what gets missed the most. Typically the standard speeds will work for most applications, there still are some applications where you will need faster or slower speeds. Depending on the capacity, the hoist speed will vary. A typical bridge speed is around 100 fpm, a trolley speed is about 70 fpm, and the hoist is between 30-60 fpm depending on capacity. There is also adaptive speed range which is specific to the weight and the most ideal for many different crane applications. Depending on the utilization you may need higher speeds. If you have a crane that feeds your facility with raw material or loading the finished product such as rebar you may need a high-speed crane in which you can not get with standard features. The last thing you want is to purchase a crane to increase production and find out that the crane operates too slowly. You may also have an application where you need to utilize the crane for assembling a product; this often requires precise lifting and extremely slow speeds. If you purchase a standard crane the speeds will be too fast for this application making the load jerky and you will not be able to assemble your product using the crane. Take the time to discuss the required speeds with your crane company.

5. Safety Issues

You will also need to know any safety issues for the application that may exist for the crane operator. Is there anything your operators will be exposed to? Can the operator keep up with the trolley and bridge speeds safely by walking? Perhaps radio control will be required, or a cab, even a remote station. Many smart features can be added to increase safety, productivity, and save on ownership cost. Is there anything in the bay your crane could get snagged on during the lifting process? Do you need to flip the load? Is there any area in the bay that you want to protect from the crane accessing? These questions can be answered using Smart Technology. Smart features can drastically increase your production and are well worth the investment. Unlike the automotive industry or any other for that matter, you can still purchase cranes today with decade-old technology. This older technology would be the worst investment you could make for your company. With the latest technology available you can increase your production and at the same time make your facility safer for your employees. There is specific technology you should never purchase a crane without. Always ensure your crane comes with a variable frequency drive for the crane and trolley motions.VFD’s ensures the safe operation of your crane and will help in reducing load swings. Hoist variable drives are also highly recommended. Radio Control help keep your operators away from the load. The cost to add this on a new crane is minimal and well worth the extra cost. Another crucial consideration to think about when reviewing your crane’s safety is a real-time analysis of your crane’s operation. This is currently limited in the crane industry but is readily available with certain manufacturers. Many other features can be added to your crane today. All are designed to improve your productivity or make your crane safer to operate. Features such as sway control, inching, micro speed, slack rope prevention, load floating, hook centering, follow me, hoist synchronization, extended and adaptive speed ranges, and shock load prevention, are available and may greatly benefit your application. Talk to a consultant or your crane provider for these options.Lighting may also be something you need to think about. If your crane is a large double girder it may cover much of the overhead lighting. Often lights will be provided on the crane to help the operator and workers see when it is blocking the overhead lights.Catwalks may be required if there is no access for maintenance personnel from the floor. Catwalks will allow your cranes to be repaired even if it is over machinery or a pit.

6.  Area Coverage

Another factor to consider is where in the working crane area do you need to reach with the load hook? This is called your hook approach. The hook approach end is the minimum horizontal distance that is parallel to the runway and goes from the centerline of the hook to the centerline of the runway.  The hook approach side is the minimum horizontal distance, perpendicular to the runway between the centerline of a hook and the centerline of the runway rail. You will need to know how much coverage your process or application will be required before getting crane pricing. Don’t think you have to acquire this information yourself. A crane consultant can help with getting this information for you.Dimensions Needed to Properly Size the Crane for an Existing Runwaya. Center of runway rail to face of building column or side obstructionb. Approximate length of runwayc. Number of Cranes on runwaye. Runway conductor locationf. Below the hook dimensions

7. Lift Height Requirements

Depending on whether you are installing a new system or a new crane on an existing system you will need various information. Your lifting requirements will be restricted based on the height and design of your existing building. If you have an existing runway you will have even greater restrictions. To get crane pricing you will need some preliminary information.Building Clearances for existing runway

1. Floor to Top of Runway Rail
2. Top of runway rail to lowest overhead obstruction
3. Runway rail size
4. Below the hook dimensions

Building Clearances for new system

1. Available dimension from floor to nearest ceiling obstruction
2. Height of product being lifted
3. Below the hook equipment dimensions

8. Power Supply

Your overhead crane is going to run off of 480V or 230V. You will need to verify you have three phase and one of these voltages available. Your crane needs to be on a dedicated circuit and typically a 20AMP breaker but of course that is dependent upon the size of the crane, and and electric below the hook devices. You also have to figure out how many cranes are on the same runway. This will increase your amperage requirements. Typically your power source on the runway will be a enclosed conductor bar. Building power must be installed in the middle of the runway unless it is a short runway with low amperage requirements. In this case it would be at the end.You will also require a runway disconnect that is not provided by the crane manufacturer. This disconnect must be readily accessible from the floor and arranged to be locked in the open position. It also must be labeled for its purpose.

9. Warranty

When reviewing your quotes you want to take into consideration your warranty. Not all warranties are created equal. Key things to look for with your crane’s warranty is the following.a. How long is your warranty?b. Does it include labor, parts, and shipping?c. What doesn’t it cover?d. Is there a local service group that can deal with warranty issues?

10. Service

Your crane purchase does not end with the crane installation. During the life of the crane it will require servicing and possibly warranty issues. There will also be a need for crane inspections to meet local regulations and ensure your crane is operating safely and efficiently. You will also be in the need of training your operators on your new equipment. When reviewing crane proposals ask about their service to ensure they have someone local
and the resources to meet your needs.

1. Ensure that whoever you’re purchasing your crane from they are a turn key supplier. They will provide everything needed to get your crane installed and up and running, including crane commissioning by the manufacturer, and even shipping of the crane.
2. Are you purchasing from the manufacturer or a distributor? If it is a manufacturer your are getting it straight from the source. If it is a distributor the manufacturer of those crane components does not have any kind of quality control on the crane itself so you will need to do more thorough research to ensure you are getting a good quality product.
3. Who will be handling any warranty issues? The manufacturer or distributor?  Are they local?
4. Is there a local manufacturer representative that can provide training on my new equipment? What type of training do they offer? Can they train my trainer?
5. Can the manufacturer of my crane provide periodic inspections on my new equipment?
6. Is the crane company registered members of CMAA (Crane Manufacturers Association of America) and HMI (Hoist Manufacturers Institute)?
7. Can I easily purchase parts?
8. What kind of consulting is available to me free of charge?

If you review these 10 items prior to purchasing or getting a quote for your next overhead crane you will be one step ahead and on the right track to making the best decision for your company. A crane advisor can help you with additional questions to help ensure that you are purchasing the best crane for your application. Don’t go it alone. You can always send me an or give me a call and I would be happy to consult with you on your next overhead crane project. If you are not in my area I can still help and then get you to the right person.

Buying a Crane? Here’s What You Need to Know for the Right Choice

When it comes to heavy lifting on construction sites, manufacturing floors, or even shipyards, choosing the right crane is critical. With the right crane, you can increase productivity, ensure safety, and meet project requirements seamlessly. However, with so many types and features available, the decision can feel overwhelming. This guide will walk you through the top ten things to consider before purchasing a crane, so you can make a choice that benefits your business and keeps your projects running smoothly.

Introduction: Why Choosing the Right Crane Matters

The Role of Cranes in Different Industries

Cranes play a central role in industries like construction, manufacturing, and shipping. From moving heavy machinery on a construction site to transporting cargo at ports, cranes help lift and move materials safely and efficiently. The right crane makes a difference by matching its specifications to the unique demands of each industry and work environment, so choosing wisely is essential for any business that relies on crane operations.

Why Careful Selection is Essential for Your Project’s Success

Not all cranes are the same, and each type is designed with different uses in mind. A crane’s load capacity, environment compatibility, and durability can impact your project's success. Making an informed decision not only protects your investment but also improves project efficiency, reduces downtime, and enhances safety on the worksite. This guide will provide a roadmap for understanding key factors to keep in mind for a smart crane purchase.

Key Considerations Before Purchasing a Crane

1. Identify Your Primary Requirements

The first step in buying a crane is identifying your project’s specific needs. Think about what the crane will be used for, how often it will operate, and the conditions of the worksite.

• •Determine Application Needs: Assess what you’ll need the crane to do daily. Will it be lifting heavy machinery, materials, or supplies? Do you have unique movement or maneuvering needs?
• •Installation Space and Infrastructure: Measure the space where you’ll install the crane and check the existing infrastructure. Make sure there’s enough headroom and support to accommodate the crane safely. Knowing these factors will prevent installation issues and improve crane functionality from day one.

2. Understand Your Work Environment

The crane’s performance can be influenced by its working environment, so consider whether the crane will be used indoors, outdoors, or in a hazardous setting.

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• •Indoor vs. Outdoor Conditions: If your crane is intended for outdoor use, ensure it can handle weather exposure. Indoor cranes need to fit the building structure while handling specific loads and heights.
• •Hazardous Environments: Certain environments—such as those with chemical exposure, extreme heat, or flammable materials—demand cranes with special features. Look for models designed for durability in these conditions, as they offer long-term value and safety.

Technical Specifications to Evaluate

3. Choosing the Right Lifting Capacity

Crane capacity is crucial for both performance and longevity. Getting this right minimizes wear and tear and boosts safety.

• •Capacity Range Options: Cranes come with a wide range of load capacities, from 1 ton up to more than 100 tons. Consider your heaviest loads and choose a crane with a Safe Working Load (SWL) that meets or exceeds that requirement.
• •Safe Working Load (SWL): SWL represents the maximum load a crane can safely lift. Ensuring your crane’s SWL matches your needs will reduce the risk of breakdowns and accidents.

4. Span and Duty Class Requirements

A crane’s span and duty class directly impact how well it can perform for your needs.

• •Understanding Span Needs: The span, or the width between the crane’s supports, affects how it can move across the site. A longer span may be required for larger sites.
• •Duty Class Selection: Choose the appropriate duty class based on how intensively you plan to use the crane. Light duty might suffice for occasional use, while heavy-duty classes are ideal for daily, high-demand operations.

Choosing a Reliable Brand and Price Considerations

5. Selecting the Right Brand

Choosing a reputable brand can make a significant difference in product quality and support.

• •Quality and After-Sales Support: Look for brands known for reliability and that offer responsive customer service. Cranes are long-term investments, so consider brands with strong after-sales service and support.
• •Customization Capabilities: Some brands offer customization options to match unique needs. Customizable cranes can save you money and help you avoid unnecessary modifications down the line.

6. Evaluating the Price

The price of a crane isn’t just about upfront costs; it’s about value over time.

• •Lifetime Cost Over Initial Price: While a low price tag might seem attractive, consider long-term maintenance, repairs, and productivity. A higher-quality crane can save you money by reducing downtime and extending product life.
• •Factors Affecting Price: Crane pricing depends on its type, span, and lifting capacity. Match the crane’s specs to your budget and project needs for the best value.

Essential Features for Safety, Warranty, and Technology

7. Safety Features to Look For

Safety features protect both your equipment and workers.

• •Built-in Safety Elements: Look for cranes equipped with safety tools like jacking pads, derailment guards, and sweeper plates to prevent accidents and ensure smooth operation.
• •Importance of Safety in Overhead Equipment: Overhead cranes carry additional risks, so taking the time to consider safety features can prevent costly mistakes and improve operator safety.

8. Check the Warranty Coverage

Warranty coverage can significantly reduce long-term costs by covering repairs and replacements.

• •Warranty Duration and Scope: Pay attention to the warranty length and what’s included. Ideally, it should cover parts, labor, and potential repairs.
• •Availability of Local Support: Having local service teams available for support and repairs can save time and avoid project delays.

9. Technology and Smart Features

Modern cranes come with technology that can enhance safety and efficiency.

• •Advanced Design Tools: Precision design makes a difference in crane productivity, and smart features boost safety and ease of use.
• •Smart Technology Options: Consider features like load-limiting devices, anti-collision detectors, and smart sensors that adapt to changing conditions. These features help improve safety and increase the crane’s lifespan.

Post-Purchase Essentials: Service and Maintenance

10. Service, Installation, and Other Key Offerings

Proper installation and regular maintenance are essential to keep your crane running smoothly.

• •Installation and Ongoing Maintenance: Professional installation ensures the crane functions correctly from the start. Schedule regular maintenance to prevent small issues from becoming bigger problems.
• •Operator Training and Inspections: Training helps operators use the crane safely, while routine inspections ensure it’s in good condition. Both contribute to a safer and more efficient workplace.
• •Modifications for Future Needs: If your crane’s needs evolve, having the option to modify or upgrade components can be a great advantage. Look for a crane with adjustable features to keep up with future projects.

Making the Best Choice for Your Crane Needs

Choosing the right crane is an important decision with long-lasting effects on productivity, safety, and budget. By following these ten key steps, you’ll be well-prepared to make an informed choice. Take the time to match the crane’s features to your specific needs, and don't hesitate to seek expert advice. With a careful selection, your crane will become a valuable asset that boosts your business’s success for years to come.

Contact us to discuss your requirements of Light Duty Cranes. Our experienced sales team can help you identify the options that best suit your needs.