4 Benefits of a Custom-Built Crane Transmission

Two of the most common reasons for crane-related workplace accidents are boom or cable failure and the worker getting struck by the crane load. Such accidents are often catastrophic. 

A custom crane transmission can help you prevent such accidents from happening. It can also benefit your company in other ways. Read on to learn more. 

1. Tailor the Crane to Your Specific Needs 

Most crane transmission brands only offer a few options for complete, pre-built transmissions. As a result, businesses may find that the resulting products only meet some of their operational needs. The best they can do is weigh the pros and cons and choose which parts meet as many of their needs as possible. 

The problem is that this can lower production rates because the workers have to work within the limits of the crane. If they try to push these limits to meet production demands (adding too much weight, etc.), their safety will be at risk. Also, a misused crane will likely break more often and need more maintenance. 

Custom cranes are the best way to ensure your crane meets production demands and is safe. This way, your crane will be able to meet more of your business’s needs. 

2. Replace an Outdated Crane Transmission 

In most cases, replacing parts of an old crane is much cheaper than buying a new one. However, you may need help finding parts that fit your old crane. 

You’re not guaranteed to find the right parts to upgrade your old crane. Still, you have a better chance of doing so by building a crane transmission piece rather than buying a complete set of parts at once. 

3. Take Advantage of Radio-Control Technologies 

Newer crane systems have technologies that can improve your production in several ways. Getting a new custom-built transmission and other parts can help you take advantage of these features.

One example of these technologies includes radio remote control systems. They can enhance your crane’s performance by improving safety and providing versatile action options. 

4. Take Advantage of Life-Extending Mechanics 

Another way new crane systems can improve your production is by extending your machines’ lifespans. Recent innovations in technology can improve how long and well your crane operates. 

Keep Your Heavy Industry Machines Efficient With Our Part Selections 

You’re not limited to an inefficient or unsuitable crane transmission. There are plenty of ways to get the exact parts your business needs. In addition, this should increase the production level of your facility. 

Consider our vast selection of parts and part options if you want to improve your current cranes and other heavy industry machinery. We can source a wide variety of existing parts, refurbish them, and even custom fabricate them if necessary. Contact us now to request a quote.

The Importance of Regular Crane Inspections

You rely on your cranes daily to get your jobs done and generate revenue. Research shows that unplanned equipment downtime costs an average of $260,000 an hour.

Inspecting your crane can help you spot problems early on. Here’s a rundown of why regular care inspections are so necessary.

Longer Equipment Life

A regular crane inspection can save you on crane-related costs in the long run. That’s because regular maintenance can help ensure that your crane remains pristine in the years ahead.

When you have your crane inspected and serviced as needed, this equipment will be more reliable when you need it the most. It will also last longer.

A fully operational crane will help you avoid the costly downtime that stems from parts failing and equipment breakdowns. After all, it takes longer to fix a broken crane than to get it inspected yearly.

And when you catch problems early in an inspection, you prevent more significant problems from cropping up later.

Employee Safety

Yet another reason to inspect your cranes regularly is that it helps keep your staff safe.

With a consistently inspected crane, the users of your crane are less likely to suffer job injuries due to malfunctioning equipment. Likewise, you prevent employees working around your cranes from being injured due to equipment failure.

The safer your employees are, the happier they will be, and the more likely they will stay with your company. In addition, fewer work-related injuries translate to lower costs for you.

OSHA Compliance

Finally, conducting regular crane inspections is a requirement of the Occupational Safety and Health Administration, or OSHA, for various industries, including agriculture and petroleum.

If you neglect crane inspections, you will not comply with OSHA. Unfortunately, this may lead to a higher number of workplace accidents. In addition, it may lead to hefty fines that further chip away at your bottom line.

When OSHA fines you, this can also damage your reputation among your business partners and clients. And if you continue to operate without compliance with OSHA, they may eventually shut down your business.

A yearly inspection is an easy way to keep your cranes operating according to code and stay in business.

How We Can Help with Crane Inspections

With regular crane inspections, you can extend the life of your heavy equipment. In addition, you can have the peace of mind of knowing that your workers will be safer. And you can avoid OSHA fines as a result.

Fortunately, at Kor-Pak Corporation, we take pride in offering parts and services for cranes and other industrial equipment, like clutches and brakes. Get in touch with us to learn more about how we can keep your cranes running smoothly from one job to the next and for years to come.

Different Types of Crane Parts and Their Uses

The crane is a powerful piece of machinery for hoisting and moving materials. It can lift vertically and horizontally, making it useful in various scenarios.

Yet, for the crane to work effectively and safely, it’s essential to understand how a crane is set. This is because the crane parts work together not only to lift and move materials but also to keep the crane securely on the ground, too. 

Read on to learn a little more about the different crane parts and their role in the safe operation of a crane

Crane Mast

The crane mast is the part of the crane that acts like a tower lifting the other components into the air, so they have room to work. Therefore, this part is sometimes called a tower. 

The wire to handle the hook and pulley system used by the crane runs up through the tower. 

Climbing Frame

The climbing frame is a section built over the crane mast. It contains many of the components that allow the crane to operate. 

The climbing frame also allows the crane operator to get to the operator’s cab. 

Slewing Unit

The slewing unit is an integral part of the crane for movement. Most people understand that a crane can lift items vertically up and down. 

A crane can also lift and move objects from side to side. It can do this because of the slewing unit.

This part of the crane works to twist the crane, allowing it to turn 360 degrees around. 

Operator’s Cab

The operator’s cab houses all of the controls to operate the crane. The crane operator must go up to the operator’s cab, often high up, sitting on the hoist. 

A crane operator needs to have maximum visibility as they operate the crane. For this reason, the operator’s cab is often quite elevated on the machine. 

Machinery Arm and Jib

You can find the machinery arm on a traditional crane that holds a crane mast. The machinery arm keeps the materials away from the crane for safe movement. 

On a crane with a boom, you’ll often see a jib, similar in function to the machinery arm. The jib is a separate telescoping arm that projects from the crane’s boom, allowing it further reach so the crane doesn’t need to get moved. 

Concrete Counterweight

A crane couldn’t operate without the counterweight. It’s the part of the crane that counteracts the weight being lifted. 

When operating a crane, it’s critical to know the weight you’re lifting, so the appropriate amount of counterweight can be in place. 

This keeps the crane from tipping while it swings and moves heavy loads. 


The crane also couldn’t operate without a hook or a device like it. The hook gets used to connect the material being lifted with the crane. 

The hook holds onto the lifted material so the crane can move it. 

Know Crane Parts Before Operation

The crane is an essential part of a worksite and warehouse because it can do the heavy lifting to places you might not be able to get other equipment to. Understanding how the crane parts work together will allow you to use the crane effectively. 

If you’re operating a crane and need parts, we can help. Contact us today to discuss all your parts needs. 

How Does an Industrial Container Crane Work?

The city of Boston is home to one of the largest container cranes in the country. The two 205-foot cranes are expected to come online sometime this year. Container cranes are an indispensable part of the shipping industry. 

Have you always wondered how a container crane works? Read on to learn how a crane for shipping containers lifts heavy loads and more. 

How Does a Container Crane Work

Although many of us are familiar with how freight by rail works, shipping is the leading means of transporting goods between countries. A container crane is a large hoisting device that lifts shipping containers.

The cranes primarily unload or load containers from a ship. Or they move containers around a shipping yard. Container cranes are a type of gantry crane. This means that they rely on an overhead beam.

Unlike moveable cranes that move agricultural goods and other products, a container crane is generally stationary. These are large, powerful machines that require extensive training to operate. 

Design Profiles

A container crane may feature several design profiles depending on where it will be used. For example, a full-gantry unit straddles a body of water

Full-gantry units lift containers from below the ship. A half-gantry unit is very common in U.S. ports and extends over a port’s edge.

Some designs use high-profile arms that swing out to move containers. 

The operating system varies widely. For example, some rely on a hydraulic lifting mechanism.

Others use a hybrid-electric system. Either may rely on an electric or diesel fuel generator.

Cab Operator

Container cranes could not operate without the skilled guidance of a cab operator. The operator typically sits in an operating cap positioned above the hoist. This gives the operator a clear view of the operations below. 

Most container cabs can traverse the length of the beam. This allows the operator to position the spreader. They can then lift the containers as needed.

A container crane operator must undergo certification and training to ensure they know how to operate cranes. Safety is always a top concern.

Operators are often tasked with looking for defects before each use. This typically means an inspection before each workday. 

Learn More About Construction Cranes

Each container crane is customized to meet the needs of each port. Whether using a full-gantry or half-gantry crane, the system for lifting and moving shipping containers is incredibly efficient and powerful.

Whether you need commercial drum breaks, calipers, clamps, or something else for your business, we’re here to help. Give us a call, and we’ll help you find a free quote on whatever product you are looking for. 


Overview of Cranes Used in the Lumber Industry

Experts expect the global lumber industry crane market to grow at an annual growth rate of 3.4%.

Cranes are an integral part of many transport operations and industrial mining worldwide. These machines simplify the movement of loads. They also ensure the safety of the workers throughout the process.

Different goods require different types of cranes to manage their weight. For example, lumber cranes need certain qualities such as lightness, quick boom movements, and maneuvrability. This allows them to function in rough, steep topography and narrow spaces.

Here are different types of cranes used to carry wood.

Harvester Cranes

These have rubber tires and carry a harvester head at the end of an extendable and articulated boom.

The head of the crane is an integrated unit that takes hold of the tree and chops it. It then points the trunk in the right direction and places it on the ground to form a stack.

Cranes for lumber such as these should possess the ability to work in tricky terrains. Such places are high mountainsides and confined spaces.

Forwarder Cranes

These cranes for wood pick timber from the ground put them into its cradle, and take them to the roadside. They take huge loads at a time and transport them as fast as possible.

Forwarder cranes use a knuckle boom with telescopic sections. They have specialized design features that enable them to work fast and efficiently. They can also go through narrow paths and save space.

A unique design feature of the forwarder crane is a slewing axis that can tilt up to 20 degrees. This is so that the axis of rotation is vertical regardless of the slope of the crane.


The L-crane is one of the favorites in the lumber industry. The main boom is long, while the knuckle boom is shorter to ensure an outstanding working geometry. In addition, the main boom doesn’t need to move much due to the shorter knuckle boom.

While using the L-crane, the operator doesn’t have to spend lots of time steering and controlling it. This means that it’s easier to focus on other tasks.


This type of crane is more compact and can fold to the direction of motion. This makes it more flexible and allows it to be fully loaded up to the permitted total height.

Due to it not being positioned in the loading area, the operator doesn’t need to leave the vehicle to reposition the crane — minimizing the risk of accidents.

Lumber Industry Cranes

The lumber industry’s demand for wood cranes has been growing fast. This trend is due to the increased use of wood products.

Construction requires composite wood and cardboard boxes to deliver packages in e-commerce. This has increased the need for timber, increasing the demand for cranes to extract and deliver it.

Wood handling cranes are adaptable and custom-made to suit your changing needs. Contact us today to learn more about lumber industry cranes.

Crawler Crane Maintenance Tips

A properly maintained crane can be the difference between life and death on a construction site. On the other hand, a poorly maintained crane brings about several safety threats and is quite a serious situation! 

All cranes need regular and preventative maintenance to ensure longevity! This extends to crawler cranes in the industry. Read below for our guide on how to keep your crawler craned well maintained!

Hydraulic System Maintenance

Crawler cranes have a variety of hydraulic systems onboard to operate the crane effectively. The use of these hydraulics should have daily checks performed before use. If a small leak is evident, it needs repairing as soon as possible before any further work occurs. 

After the workday is done, the operator must take any strain off the hydraulic parts. This will keep any unwanted pressure off the hydraulic seals and ensure the system’s longevity.

Crawler Crane Alignment

After extended years of hard use, a crane can lean to one side causing extra tension on the side that it leans further over to.

Crane operators should check the alignment of the crane every day and report any abnormalities immediately.  If the crane shows signs of misalignment, then a reputable repair service is necessary. The crane needs repairs before any further work is to be done.

Check Chain and Connections for Wear

The chains and connections that form part of the hoist should be able to withstand years of use however they can be prone to rust and wear. Therefore, as part of a maintenance checklist, the chain and connections should be checked daily for any signs of wear

If severe wear and rust are evident over time, a professional should be called to repair it immediately. A hoist snapping is a very serious safety threat for everyone on site.

Check Tracks or Tires for Wear

Depending on the kind of outrigger you have, the tracks or tires are one of the most safety-critical components found on a crane. This is because the tires or tracks need a decent amount of thread to move heavy loads around safely.

Once the tread wears away, the crane can lose traction and lose its load in many ways. This should be checked regularly and replaced when needed. If your crane works in snow, the snow tires need evaluation in summer before installation and vice versa for the summer tires. 

Rely on Your Equipment

Operators should be able to rely on their equipment to keep them safe and working hard. By following these simple guidelines and performing routine checks, the job will get done right and on time. Crawler cranes are tough equipment but shouldn’t be pushed past the breaking point!

Are you looking for the toughest parts to repair your crawler crane? Then, head on to our products page and find the very best parts to keep your crane on the move today!

What To Know About Floating Cranes for Marine Construction

The crane has been essential to construction since the Greeks developed it (around 700-650 B.C). It has helped lift and carry loads during large construction projects. But, what if your project is on the water?

We have created this guide to understanding floating cranes. Read on to learn more about floating cranes and when you might need one for your construction job.

What is a Floating Crane?

Floating cranes are needed when doing marine construction. They are useful when building ports and bridges over water. They move heavy equipment from one place to another.

They take the place of a land crane when using one is not possible for your project. They allow you to complete the tasks of a regular crane but on the water.


You can use a floating crane barge to drive interlocking metal sheets into canal and river banks. The piling protects the bank and allows for better land retention. However, piling often must be installed from the water,  making a floating crane crucial.

Moving Materials

Crane barges take large amounts of materials to and from worksites. They can carry away materials from demolition sites as well. They will also carry heavy machinery, to the sites such as diggers and trucks.


Floating cranes are ideal for dredging waterways. They can clear the sediment and debris from the bottom of the water. Crane barges can then carry away the debris to a deposit site.

Types of Cranes

The type of crane you will need depends on your marine construction project. There are several types to choose from.

Stiff Boom

A stiff boom crane moves general cargo. It is good for moving fragile items because there is little to no drift when lifting. Instead, it lifts straight up and straight down.

It is the best type of crane if your project needs items lifted over a wall. This is because the hoses and cylinders of this type of crane are inside and protected from the elements.

Telescopic Boom

A telescopic boom crane can extend and retract. This feature allows you to place your items precisely. These cranes can also lift cargo with little to no drift.

Knuckle Boom

Knuckle boom cranes are easier to maintain because they have fewer joints. These cranes are not able to lift heavy loads for an extended time. They are meant to load and unload materials.

Their most common use is on vessels with a large deck or fixed platform.

Foldable Telescopic Boom

As its name suggests, foldable telescopic boom cranes can fold into a compact size. It has two booms attached to knuckles so they can move in and out. Think of it as a large human finger!

Floating Cranes and Marine Construction

Floating cranes are essential to the undertaking of a marine construction job. There needs to be a way to move and lift heavy materials when working on the water. The type of floating crane you choose will depend on the type of marine construction you do.

For replacement parts and services, contact us today!

Types of EOT Cranes and Their Uses

Does your business involve lifting heavy loads? You’re likely using forklifts to lift, lower, and move your massive items. The problem with forklifts is their stacking inaccuracy, making them drop items.

They can also face floor obstructions that cause delays. Thankfully, electric overhead traveling cranes can eliminate these challenges and more.

Are you aware of the different electric overhead traveling (EOT) cranes? These machines fuel a growing market for automated overhead cranes. Read on and learn more:

Single-Girder EOT Cranes

The Single-Girder is the most common type of EOT crane. It’s also one of the simplest and most cost-effective ones around. After all, it features one girder or primary beam as its main bridge.

It also comes with a hoist and trolley running along its axis. Its single-beam construction makes it much lighter than its double-girder counterpart. You’ll also find mounted motors and vertical gearboxes that facilitate its operation.

Some single-girder cranes operate using a single radio remote control. Others use a push-button pendant station. It’s strong enough to lift 20 tons of load with a lifting capacity of 15 to 50 feet.

The crane can move at a speed of 200fpm and have a hoisting speed of 10-60 fpm. It also fits conditions with a crossing speed of 10-60 fpm.

Double-Girder EOT Cranes

The double girder EOT crane features two girders, two trolleys, and two hoists instead of one. It also has a platform on both sides and a crab mechanism running along with them.

The gearboxes are horizontal, while the motors are foot-mounted. The operation can be via radio remote control, push-button pendant, or an operating cabin mode.

Another key feature is the two limit switches. The rotary limit switch allows you to control the upward and downward motions. It also lets you calculate the hook’s movement.

The other switch is the gravity limit switch which helps secure the limit switch. Because of its double beams, the crane can lift heavier materials of up to 250 tons. The lifting capacity is the same at 15 to 50 feet.

It can manage up to 350fpm moving speed and 60fpm hoisting speed. It can also work in projects with crossing speeds of 150fpm. 

Maintaining EOT Cranes

Stories of crane-involved accidents are not new, with an average of 42 crane-related fatalities happening every year. Proper crane maintenance will help minimize and avoid these accidents.

Inspect the switches to ensure they’re properly working. Check the brakes and clutches for any visible issues. Look at the hooks and inspect for bends or damages.

Check the condition of the wire ropes for damage or degradation. Look for signs of corrosion, severe wear, or bird caging. Ensure regular lubrication of the wire ropes to keep them at bay.

When searching for replacement parts, make sure to buy from trusted sources.

Enjoy High-Quality Crane Parts Today

Now that you know the types of EOT cranes and their uses, you can upgrade your lifting equipment to a more efficient one.

You came to the right place if you’re looking for replacement parts. We offer high-quality parts from some of the leading manufacturers in the industry. Connect with us to discuss your options.

What Are Port Cranes and How Do They Work?

Did you know that the Port of Los Angeles handles around 9 million TEUs of freight every year? If it weren’t for their use of port cranes, the organization and eventual shipping of the various containers coming into the port would be chaotic at best. 

Port cranes are one of the most important aspects of shipping. Without crane services, the massive amounts of trade the world experiences every day may not exist. 

Types of Port Cranes

There are two types of port cranes, and they function in the same way, moving cargo from one spot to another, but they differ in location when found in a shipping yard.

1. Yard Cranes

Yard cranes come in several varieties. Most common are RMG cranes and RTG cranes.

You’ll find these cranes moving shipping containers from a yard onto trailers.

2. Quay Cranes

Generally called ship-to-shore (STS) cranes, these cranes move cargo from a ship to the shore.

There are two types of STS cranes: high and low profile.

How Much Weight Can a Port Crane Handle?

On average, port cranes can lift about 80 tons, with some models handling 100 tons or more. While weight certainly contributes to a crane’s productivity, a different system determines productivity when it comes to cranes.

This system uses “moves” as its measurement unit. Moves are determined by how many containers are moved from a ship to the quay or from a quay to a ship. For example, seven containers transferred from a ship to the quay is seven moves. 

Powering a Port Crane

You will find two motors used for most cranes: AC motors and DC motors. Each has its own crane controls that assist with multiple functions that include:

  • Moving the boom
  • Moving the gantry
  • Moving the trolley
  • Performing a hoisting maneuver

Generally, AC motors tend to handle more force than DC motors, so they are often found in port cranes. 

Other Parts of a Port Crane

Generally, you’ll find these other parts of a port crane in operation when moving cargo:

  • Cab (where the port crane operator sits)
  • Support legs (receive the load transmitted by beam)
  • Main hook (double peak)
  • Auxiliary hook (single peak)
  • Girder

With all of these different parts, cranes can assist in the logistics, organization, and eventually transportation of freight worldwide. 

Crane Repair and Parts

Be proactive in your port crane’s repair to keep ports moving efficiently. Kor-Pak has all the repair parts needed if you run into any type of problem with your heavy industrial machinery.

Contact us today to learn more about how you can repair your port crane and help it work even more efficiently.

Top Three Crane Repair Services

Projections show that the global crane market will reach a value of $49.64 billion by 2028.

Cranes are incredibly useful in many industries, but they will experience failures with time. When this happens, or sometimes even before it happens, you will need to hire a professional crane repair service so that you can keep things running.

Keep reading for a rundown of 3 of the leading crane repair services. 

1. Routine Maintenance

Like all heavy machinery, Cranes should have maintenance carried out regularly, regardless of their working state. Therefore, OSHA and crane manufacturers suggest basing the timings of inspections on time in use.

OSHA and ANSI require different types of inspections. Some are needed daily and others monthly. Beyond that, crane service and repair should generally be monthly or annually, depending on how much time the crane is in operation and the environment it is in.

You can track this information online to ensure you can keep everything in order and you can use a transponder to monitor and record maintenance information. This will then provide reminders for maintenance and inspections.

2. Wear and Tear

Even if a crane is well cared for, components will naturally wear down with time. There are a lot of moving parts, and having to lift heavy loads regularly means that crane repair will definitely be needed at some point.

When doing daily inspections, a crane operator should assess the state of most parts of a crane for signs of damage or wear and determine if any repairs are needed.

A typical example could be the wheels or runway beams wearing down. This is often the result of an alignment flaw that causes skewing as the crane moves.

Even without skewing, the wheels will wear down after a time and need replacing to prevent an accident from occurring.

Wear and tear can also apply to electrical components. Usually, these are pretty minor, but a small electrical problem could cause significant damage in time if not attended to.

3. Unexpected Damage

While uncommon, accidents can always happen. This could be the result of human error or something beyond anyone’s control. Either way, significant failures can bring a halt to operations until repairs are carried out.

Kor-Pak is a professional crane repair service dedicated to increasing your uptime and keeping everything running smoothly. If any parts of your crane are damaged beyond repair, Kor-Pak can source replacement parts and fit them into your equipment.

Sometimes parts aren’t too damaged, in which case we can repair or refurbish as needed, and even retrofit improved parts where possible. However, sometimes the nature of the damage may require a custom fabricated part which we are more than capable of taking care of.

Under some circumstances, we can even reverse engineer and improve parts, increasing the quality of your products. Some parts and services we offer include:

  • Crane and hoist controls
  • Brake and clutch accessories
  • Industrial braking and clutch systems
  • Crane boom repair services
  • Crane modernization and upgrades
  • Overhead crane inspections

Professional Crane Repair Services

Whether it’s routine inspections or repairs for a full breakdown, you want to make sure you hire crane repair services you can rely on. Kor-Pak meets all standards and regulations set by OSHA and ANSI, ensuring you get the best service possible.

To find out more about our services, click here to contact us today.