How Does an Air Over Hydraulic Brake System Work?

While air over hydraulic brakes might not be the most common technology anymore, they are still relevant and thus important to understand.

In fact, a good understanding of air over hydraulics is important not only because of the necessary maintenance and upkeep, ut also in case you’re thinking of a replacement.

In this article, we will go through what an air over hydraulic brake system is, and how the system works.

What is an air over hydraulic brake system?

As the name suggests, this type of braking system is a combination of parts of an air brake system and a hydraulic brake system.

It uses both air and hydraulic compression to operate the brakes.

This type of braking system was created with the hopes of increasing the braking power compared to the power in a hydraulic braking system.

This system is not the most common, but it can often found in trucks, trailers, cranes, and other industrial equipment.

Because of all of their parts and components, these systems must be inspected often and maintained by a professional.

How it works

Normal braking

As we learned earlier, this system works by combining elements of an air brake and a hydraulic brake.

It has a special type of power cylinder that contains a hydraulic cylinder and an air cylinder in tandem.

While both of these cylinders have pistons, the important thing to note is that the pistons are not the same size. the air piston is greater in diameter compared to the piston for the hydraulic cylinder.

The air piston is greater in diameter compared to the piston for the hydraulic cylinder.

What does this mean? This means that there is more hydraulic pressure compared to air pressure during normal breaking.

So when the pedal is pressed, the valve opens and releases the pressure, which a causes braking to occur.

Hard braking

The valve movement when is different depending on how hard the brake pedal is pressed.

When heavier pressure is applied to the brake, there is more valve movement.

Because of the increased valve movement, a greater amount of pressure is released into the power cylinder, causing stronger and faster braking.

What to look out for

As we mentioned earlier, the many parts of this type of system means there are more areas that could be faulty or need repair.

You’ll need to be on top of the maintenance of the many parts of the air over hydraulic braking system, as any issues could result in liabilities and expensive repairs.

Besides the system itself, the oil involved in this system needs to be maintained. Be aware of potential freezing during the winter months!

Bottom Line

Hopefully, this article answered any questions you had about how an air over hydraulic brake system works.

There are many types of brakes, but it is still important to understand how each system works, especially if you have machinery that uses certain systems.

We have a lot of experience with a variety of braking systems and machinery, so if you have any questions or need any advice, feel free to contact us.

You can also leave us a question or a comment in the comment section below!

Why Overhead Crane Inspections Are Important

Keeping your cranes and employees safe should be at the very top of your priority list. Read here to learn about why overhead crane inspections are important and how you can keep your overhead cranes safe and functional!

Preventative Maintenance

The key to keeping cranes reliable is preventative maintenance. Your crane should come with an owner’s manual from the manufacturers. This guide will outline what preventative measures should be taken.

Preventative measures should include a guide to inspecting the crane as well as an outline for a preventative maintenance program. Having an annual Occupational Safety and Health inspection is of the highest importance, as it is the best jumping off point for assessing minimum requirements.

The Occupational Safety and Health Administration (OSHA) has many regulations for regular maintenance. An inspector must be well qualified.

Various degrees of qualifications are necessary in order to be deemed capable of inspection and load testing. Management must decide who is capable of fulfilling these duties, and designate them to oversee overhead crane inspections.

OHSA inspections, however, are only the beginning of your overhead crane tests. Original equipment manufacturers, otherwise known as OEM, have the best standards for each individual piece of equipment.

Inspection and load testing require a large degree of expertise. This may require hiring an employee who specializes in overhead crane inspections.

Load Testing

Making sure that overhead cranes have been adequately load tested is imperative to ensure the safety of your employees.

While conducting a Rated Load Test, it is important to ensure that the loads are no less than 100 percent or more than 125 percent of the rated load capacity unless otherwise specified in the OEM handbook.

Severe load testing should be practiced at least once per quarter. However, OSHA rules suggest that visual checks should be made every day by the person operating the overhead crane.

Finding a professional inspector to suit your needs isn’t as difficult as it sounds. It is recommended that wear and tear evaluations should be completed no less than once a month. The documents produced by these inspections should be available to anyone operating the overhead crane. This way they will be well aware of any potential issues with the crane.

Additional Precautions

Bear in mind which cranes receive the most use. Identify which piece of equipment are used often, as they may have acquired more wear and tear and may require additional attention. Older cranes may also require upgrades.

In closing, making sure that your overhead cranes are running at peak performance is of the utmost importance. It means that your employees are able to do their work more efficiently. They’ll be able to do so more safely and with fewer accidents.

An unsafe work environment contributes to lower productivity, more frequent accidents, more workman’s comp claims, and even the potential for lawsuits.

So make the easy choice. Make sure overhead cranes used by your business are operating at their best, perform preventative maintenance, regular inspections, and always replace any obsolete parts.

Your team will thank you.

Why You Should Trust SEW for Servo Technology

What Is Servo Technology?

Servo technology, otherwise known as a servomechanism, uses error-sensing technology to make automatic corrections to the output of a machine or device.

This eliminates the need for constant user input, as the device makes adjustments itself.

It sounds complicated, but it isn’t. In fact, you probably use some kind of servo technology every day. It’s all around us.

Examples of servo technology include cruise control on a car, conveyor belts in production lines, autofocus on a camera and automatic doors.

Why Use SEW for Your Servo Technology?

Industry Experience

SEW has been around for more than 80 years.

During that time, SEW- Eurodrive has built a history of leading innovation in the industry of servo technology.

They created the first variable speed gear motor and the first motor with energy-efficient copper rotors.

You can be certain that they’ll be on the frontline of all future developments in servo technology.

Exceptional Customer Support

With some companies, once you’ve bought a product, you’re on your own from there.

That’s not the case with SEW-Eurodrive.

Using SEW means being you’ll receive customer care and guidance long after you’ve made your purchase.

SEW offer 24-hour technical support in case of emergency. Their support staff includes not only customer service staff, but engineers, technicians, and product specialist.

Whatever your issue, you can be sure that they have the right people on hand to help you.

Award-Winning Production

SEW has been recognized for excellence in innovation, environmental ability, and employee empowerment.

In 2003, they won the European Motor Drive Vendor of the Year Award.

Their manufacturing facility was also honored with Plant Engineering Magazine’s Top Plant Award in 2007.

An Extensive Product Range

SEW boasts the broadest product range there is in the world of servo technology.

Their range includes gearboxes, frequency inverters, AC and DC motors, automation systems, applications, and software.

SEW’s products are made in such a way that they can be combined and configured in any way the customer requires.

This means that no matter what your needs are, SEW can customize a system that suits you.

Fast Delivery

SEW offers rapid delivery throughout the US.

They are able to do this because their products are not distributed from one centralized place.

They have a number of regional assembly centers, each one of which stocks a huge and varying range of products and spare parts.

This means that you don’t have to wait around for delivery or repairs.

How to Buy SEW Eurodrive Products

Servo technology undoubtedly makes our lives easier. It’s intelligent, versatile, fast, and cost-effective.

SEW-Eurodrive is the leading producer of such technology, and with their wealth of expertise and proven excellence in the industry, there’s no reason to go anywhere else.

These are just some of the numerous reasons why you should invest in SEW Eurodrive products.

If you’re looking to get hold of some for yourself, we can help.

Contact us for a quote on SEW products.

5 Signs You Need Crane Repairs

Has your crane been acting unusual? That’s most likely a sign that it’s time for crane repairs.

If your crane is vital to everyday operations, you’ll need to recognize the signs early to make sure everything keeps running smoothly.

OSHA sets the standards for crane safety, and a crane that isn’t working properly is a hazard to employees and clients.

Every business should have strict safety standards and a checklist for inspecting crane and hoist systems.

But even if you’ve been in the business for years, it’s easy for little things to slip through the cracks and cause safety hazards. And a damaged crane isn’t always easy to spot.

To make your life easier, we’ve compiled 5 of the most common signs your crane needs repairs. Keep an eye out for them!

1. Corrosion or Rusted Parts

If you’re working outdoors (particularly in humid or rainy climates) keep an eye out for corrosion. Rust is the most common type of damage caused by corrosion, and it can be detrimental to your equipment.

Rusted parts can often go unnoticed because rusting occurs over longer periods of time. It’s important to keep an eye out for, however, because once parts are rusted they can easily break.

2. Abrasion

Like corrosion, abrasion is dangerous because it occurs over a long period of time and can really sneak up on your equipment.

If you’re not familiar with the term, abrasion occurs when parts scrape away at each other after years of movement.

To avoid breakages, keep a close eye on all moving parts of your cranes.

3. Broken Chains

Years of lifting heavy loads can take a toll on your equipment, especially the chain links. Broken or worn out chains are a serious safety hazard and can compromise your whole crane system.

If you see a worn out or broken chain, stop work immediately and have the chain repaired.

4. Broken or Loose Parts

This may seem obvious, but broken or loose parts should be a sign you need crane repairs immediately.

To prevent damages, make sure you’re thoroughly inspecting your cranes often. It’s easy to notice damages to large parts of cranes, but it’s the smaller parts that often go unnoticed

Loose parts can also sneak up on you. It might be obvious when something is broken, but a loose part could go unnoticed until it slips out.

Make sure you are inspecting and tightening all parts of your machines as often as possible.

5. Worn-out Pads

You probably know that your cranes have multiple pads to absorb shock from movement. While these parts help prevent wear and tear on your machines, they themselves can wear out over time. To prevent more serious damage, keep an eye on the pads of your crane and replace before they get too worn out.

Prevent Crane Repairs Before They’re Necessary

The best way to prevent dropped loads, expensive damage or injury to your workers is to be proactive and catch these issues early. Make sure your employees are up to date on safety standards and that they report every issue, no matter how small.

Are you in need of crane repairs or an upgrade all together? Check out our crane services here or contact us for more information on how we can help.

The Best Uses for Your Marland Clutch

At Kor-Park, we pride ourselves on providing our customers with the best products.

We supply tools like the Marland clutch because they are durable, versatile, and time-tested. With proper care and maintenance, your clutch will last a long time and serve multiple functions across your business.

Learning new applications will help you get the most out of tools you already love to use.

There are countless uses for a Marland Clutch. We’ve compiled this list to help you understand the functions that make the most sense for your business.

What is a Clutch For?

First, let’s review exactly what a clutch does.

In short, the clutch is a device that couples and uncouples moving parts in a mechanism.

For example, if you’ve ever driven a manual transmission vehicle, you’ve used a clutch. Here, the clutch’s job is to engage and disengage various gears.

Clutches transmit power between shafts, motors, gears, etc. This is what makes them such versatile tools.

Clutches provide an important function industrial settings. They are crucial to controlling the speed and power with which machinery operates. Without a clutch, it is almost impossible to regulate these functions.

The Marland Clutch Difference

Of course, a Marland Clutch is designed to handle power transmissions in machines much bigger and more complex than a manual transmission car. Industrial-sized equipment calls for an industrial-sized clutch.

Marland has been producing clutches since 1931. These clutches help businesses keep their industrial equipment running smoothly.

Industries like mining, metals, power plants, and cement manufacturing all use the Marland Clutch on their heavy machinery. These clutches come in different sizes and designs. This helps to meet the unique needs of different industrial equipment.

The type of machinery you are looking to handle will help determine which type of clutch you will want to use.

The Right Clutch for your Business

Every industry’s machinery has unique needs and requires different kinds of clutches.

For instance, the machinery used by oil refineries cannot be stopped for routine maintenance. Marland’s CECON (Completely Enclosed for Continuous Operation) clutch is optimized for these needs. This clutch is also a great option for machinery that operates outdoors, or in wet conditions.

There are some industries where machines must remain functional during emergency shutdowns. Kiln drives use Marland’s One-Way CEBMAG clutch to keep their machines running slowly in these situations.

In addition to one-way clutches, Marland also produces backstops. These are important to protect against reverse torque on a conveyor or elevated installation.

Additionally, if your machinery needs require multiple clutches, Marland manufactures clutch couplings. These will help you use your clutch in the way that best works for your business.

At Kor-Pak, our goal is to provide you with equipment customized to meet your needs. Whatever the unique needs of your industrial equipment, there is a clutch that can help things run more smoothly.

If you have questions or need help determining which clutch is right for you or taking care of your Marland Clutch, contact us so we can work together on the bets solution.

5 Crucial Tips for Buying a Used Demag Crane

5 Crucial Tips for Buying a Used Demag Crane

Are you in the market for a used Demag crane?

There are many different things to consider before buying a crucial piece of equipment, and a Demag crane is just that.

Damage is always a great choice, as they’re one of the highest quality brands out there. Even if you’re buying used, you’re guaranteed to get a top-notch piece of equipment.

However, a new-to-you crane is always a big purchase so you’ll want to make sure you get a good deal. To make the most of your money, here are five things you always need to consider when buying a used Demag crane:

1. Establish a budget

With any major purchase, it’s important to crunch your numbers beforehand and establish a finite budget for yourself.

Determining what you can spend will make your life easier down the road, as you determine what features and other qualities you look for in a crane.

So, know exactly what you can spend and start your search from there. Used cranes are a great way to save some extra money without sacrificing quality.

2. Why do you need the crane?

Another thing to establish before you invest in a new crane is why you need it in the first place.

If this crane is a new addition, or you’re replacing a broken crane, this one might be obvious. However, if you’re old crane is lacking some important features, make sure you’re looking for those in the new purchase.

3. Identify your must-have features

Establishing why you need the crane should give you a good idea of your must-have features. When doing this, make sure you’re aware of how the crane will be used, as well as the working environment.

Are you lifting loads many stories high? Are you lifting many loads or a few heavy ones? Does the crane have the freedom to move around or is space more limited?

Thinking through a detailed list like this will help you make a list of requirements.

4. Create a “wish list” of other features

Before you start looking, it’s also a good idea to establish the difference between features that are good to have and features that are nice to have.

These features won’t be a dealbreaker for you, but they could be worth investing in. In this case, it’s important to focus on the features that are truly important, so you can potentially save your business even more money in the long run.

5. Shop around for the best deal

As with any big purchase, don’t buy the first thing you see. A crane is a large investment piece, so it’s important to make sure you’re making an informed purchase.

Buying used Demag crane is a great way to save money, but always make sure they’re in good condition and up to safety standards.

If you haven’t done so already, take some time to look over the Demag website to familiarize yourself with their cranes and other products. This will give you a better understanding of what you’re looking for.

For more resources on making your new or used crane work best for you, check out the other articles on our blog. And if you would like expert help in choosing a Demag crane that meets your needs, get in touch.

How To Extend The Life Of Your Marland Clutches

How To Extend The Life Of Your Marland Clutches

There really is no secret when it comes to the life of your overhead cranes. It comes down to maintenance and prevention.

And of course, you have to buy and install the right parts- like Marland clutches.

We know that clutch maintenance is vital to the longevity of your overhead cranes. The problem is many companies take no action, or ignore the signs until it’s too late.

And when it’s too late, you could have a real problem on your hands. So rather than waiting for disaster to strike, start preventing problems now.

Here’s how:

 

Installing Marland Clutches

Marland Clutches are made to be the best. They’re engineered to be able to perform the toughest jobs while requiring minimum maintenance.

But that doesn’t mean some maintenance isn’t required. And that maintenance can go a long way toward extending the life of your clutch. Proper installation is also essential.

Here’s how to properly install your clutch:

  • Do not operate the machinery until it’s been filled with oil according to specifications.
  • Lubricate properly.
  • Check the direction of freewheeling operation.
  • To check for correct direction of rotation, hold the outer race in place. Then try to rotate the cam first in one direction, then the opposite direction.
  • Mount clutch on staff.

Marland Clutches Need Maintenance

Oil maintenance is extremely important when it comes to extending the life of your clutch.

Here’s what you need to know:

  • Both humid and dusty conditions will determine how often you have to check and maintain the oil. However, regular inspection is recommended.
  • Make sure all bolts are tightly screwed on to avoid leakage.
  • To figure out how often you need to check your oil, examine a sample from the clutch cover plate oil hole. The objective is to look for evidence of contamination.
  • Once the frequency of future examinations is established, a regular routine of draining, flushing, and refilling the clutches with fresh oil is required.
  • Every 3-6 months, apply grease to the gear teeth in the engaging/disengaging sleeve.
  • Keep all parts as clean as possible. Dirt and grit will cause problems.
  • Never use a hammer or try to pull on the clutch cover plate.
  • Check to ensure that bearing, oil seals, and gaskets aren’t damaged.

Never use carbon tetrachloride. It’ll harm neoprene seals.

What to Ask When Implementing a Maintenance & Prevention Program

If you want to extend the life of your crane and its parts, you need to create an effective maintenance and prevention program. You also want to hire the right professional team to handle it for you.

Most of the time, a yearly inspection is all that’s needed to ensure that all the parts of your crane are working smoothly.

Here are some great questions to get you started:

  • Reputation: Does the service company have a good reputation within their industry?
  • Accommodating: Is the company you’re thinking of hiring to take care of your crane willing to accommodate your schedule and needs?
  • Performance: During each visit, will the company perform all standard maintenance procedures like fluid changes, runway checks, and greasing the bearings?
  • OSHA & OEM Requirements: Does your service company meet standard OSHA & OEM recommendations?

We’ve been in business since 1976 because we believe in creating value for our customers. Contact us today for parts, questions, and support.

 

5 Signs You Need Crane Repairs

Has your crane been acting unusual? That’s most likely a sign that it’s time for crane repairs.

If your crane is vital to everyday operations, you’ll need to recognize the signs early to make sure everything keeps running smoothly.

OSHA sets the standards for crane safety, and a crane that isn’t working properly is a hazard to employees and clients.

Every business should have strict safety standards and a checklist for inspecting crane and hoist systems.

But even if you’ve been in the business for years, it’s easy for little things to slip through the cracks and cause safety hazards. And a damaged crane isn’t always easy to spot.

To make your life easier, we’ve compiled 5 of the most common signs your crane needs repairs. Keep an eye out for them!

1. Corrosion or Rusted Parts

If you’re working outdoors (particularly in humid or rainy climates) keep an eye out for corrosion. Rust is the most common type of damage caused by corrosion, and it can be detrimental to your equipment.

Rusted parts can often go unnoticed because rusting occurs over longer periods of time. It’s important to keep an eye out for, however, because once parts are rusted they can easily break.

2. Abrasion

Like corrosion, abrasion is dangerous because it occurs over a long period of time and can really sneak up on your equipment.

If you’re not familiar with the term, abrasion occurs when parts scrape away at each other after years of movement.

To avoid breakages, keep a close eye on all moving parts of your cranes.

3. Broken Chains

Years of lifting heavy loads can take a toll on your equipment, especially the chain links. Broken or worn out chains are a serious safety hazard and can compromise your whole crane system.

If you see a worn out or broken chain, stop work immediately and have the chain repaired.

4. Broken or Loose Parts

This may seem obvious, but broken or loose parts should be a sign you need crane repairs immediately.

To prevent damages, make sure you’re thoroughly inspecting your cranes often. It’s easy to notice damages to large parts of cranes, but it’s the smaller parts that often go unnoticed

Loose parts can also sneak up on you. It might be obvious when something is broken, but a loose part could go unnoticed until it slips out.

Make sure you are inspecting and tightening all parts of your machines as often as possible.

5. Worn-out Pads

You probably know that your cranes have multiple pads to absorb shock from movement. While these parts help prevent wear and tear on your machines, they themselves can wear out over time. To prevent more serious damage, keep an eye on the pads of your crane and replace before they get too worn out.

Prevent Crane Repairs Before They’re Necessary

The best way to prevent dropped loads, expensive damage or injury to your workers is to be proactive and catch these issues early. Make sure your employees are up to date on safety standards and that they report every issue, no matter how small.

Are you in need of crane repairs or an upgrade all together? Check out our crane services here or contact us for more information on how we can help.

5 Safety And Maintenance Tips For Your Crane’s Chain Hoist

5 Safety And Maintenance Tips For Your Crane’s Chain Hoist

Performing regular maintenance is an essential safety practice in any workplace. This is especially true in a place that deals with industrial equipment, like cranes.

Cranes are both extremely useful, and extremely dangerous. According to OSHA, crane-related injuries kill approximately 71 workers each year.

Maintaining your crane’s chain hoist is essential to keeping your employees safe. Additionally, regular maintenance will also keep your crane operating efficiently.

1. Understand Common Chain Hoist Problems

The first step to maintaining your chain hoist on your crane is understanding how it works. This way, you’ll be better able to identify when wear and tear are impacting its effectiveness.

There are three kinds of hoists that your crane might use: differential, lever ratchet, and hand chain. All three of these hoists use some combination of a chain and hook to both lift and move heavy objects.

Since these hoists work by rotating a chain, the most common problem associated with them are related to wear and tear on the chain.

That said, regular maintenance can greatly extend the lifespan of a chain.

2. Keep the Chain Clean and Lubricated

The most common causes of wear on a chain are rust and debris. Chains can become stiff and difficult to move due to the buildup of rust and grit.

Most hoists will require dismantling in order to be properly cleaned and oiled. You should do this at least once or twice a year, depending on what you primarily use the hoist for.

3. Watch out for Signs of Damage

Over time, the chain in a hoist will become worn. Make sure to look for signs of deterioration, and replace the chain before it is overused.

Common signs of a chain that needs to be replaced include kinking and stretching. Additionally, if chains “pop” when they are in use, that is likely because they are becoming too stiff.

Remember, it’s always better to replace a chain than it is to have an accident.

4. Perform Regular Inspections

Testing and inspecting your industrial equipment is not just a good idea. OSHA requires that certain tests and inspections take place on a regular basis.

The hoist operator should perform a brief, visual inspection every day to make sure the equipment is operating properly.

Monthly, a more in-depth inspection should be done to document an existing wear, tear, and damage to the equipment.

5. Conduct Necessary Testing

In addition to inspecting your crane’s chain hoist, you should also test it regularly to ensure it is functioning properly.

You should perform a service load test at least quarterly. These tests are designed to observe how well the equipment functions while lifting objects of various weights.

Finally, at least every six moths, make sure to test the chain hoist’s ability to lift heavy loads.

Performing these tests will help demonstrate how the hoist operates under various conditions and will reveal any problems with performance.

If you’d like help keeping your equipment in good condition, or need to purchase replacement parts, then contact us. We’ll work with you to find the right equipment and tools for your needs.

Which Type Of Overhead Hoist Is Right For You?

Figuring out the right overhead hoist for your crane can be a mind-boggling experience. Navigating the vocabulary and the specifications for each type of hoist is confusing and frustrating.

However, depending on what it is you’re lifting, it’s possible to find the best overhead hoist for you!

Read on to take deeper dive at the specifications for different overhead hoists.

Which Type of Overhead Hoist Works for You?

Manual or electric?

The first decision to make is whether you’d prefer an electric or manual overhead hoist. To decide, take a look at what you intend to use it for.

If you’re using maintenance equipment, or you don’t anticipate using the hoist frequently, a manual hoist will be fine. There’s no reason to go through the expenses of using an electric hoist for such infrequent use.

Electric hoists are better suited for light equipment that needs more lifting. They can also come in various different speeds depending on what you need to use it for.

Electric hoists also offer smooth starts and stops along with the hoist motions. Load sway is limited, meaning wear and tear are generally reduced. Additionally, it also gives you more accuracy and precise loading.

Lifting medium

A lifting medium refers to what the lift actually uses to, well, lift! This can be wire rope or chain.

Some lifting medium hoists are a welded link load chain. This is exactly what it sounds like: different interwoven welded links. They’re manufactured to meet different recommendations and strength, meaning you may need a different hoist for different lifts.

You can also use a roller chain load, which you will have to interchange, and a wire rope.

Operation

An operation host refers to the amount of power needed to operate it. You can use manual power, electric power, or pneumatic.

Manual power will give you a hand chain, meaning you’ll be grabbing and pulling a long chain that’s suspended from the hoist.

If you use an electric one, you won’t have to pull. Instead, you’ll use a menu of buttons and levers to help you lift the object.

See above for more information regarding electric and manual hoists.

Pneumatic powered hoists are powered by a control device. You press a button or pull a lever that will help give energy to an air motor. This will help the object lift.

Suspension

This refers to the type of mounting used to suspend your hoist. They can be hook-mounted, lug-mounted, and trolley-mounted.

All of them are exactly as described. You’d use a hook-mounted suspension to suspend your hoist from a hook, a lug-mounted suspension to suspend it from a lug, and a trolley-mounted suspension to suspend from a trolley.

Conclusion

As you can see, not every overhead hoist will work for every job. Most of them are limited by manufacturer specifications and weight, among other things.

Having a variety of hoists is probably the best solution, but the one you choose and your method is a personal decision.

If you have any questions regarding hoists or industrial equipment, feel free to let us know!