Vibration R&D Corner

Derek Stake

The Engineering Perspective: How to Stop Fatigue Failure During Vibrator Installation

By Derek Stake

After reading some of our very informative blogs about vibration applications on hoppers, you probably learned that vibrators don’t damage equipment, wrong installations do. Those blogs described how critical it is to size the vibrator for your hopper applications and the importance of using a stitch weld to adhere the vibrator mount to the hopper wall. Now, I would like to provide some engineering support discussing why stitch welding is essential and further insight into how vibration works to improve material flow inside a hopper.

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What Is Fabricated Equipment Design Flexibility?

By CVC Team

Typically flexibility is a good thing, both in business and athletics as well as life in general.  For Cleveland Vibrator, flexibility often means having a number of choices available to solve a bulk material problem.  Our line of pneumatic vibrators ranges from the small VM-25 piston vibrator to the huge 1900 single impact unit and about everything in between to include ball vibrators, turbine vibrators, air cushion piston vibrators with friction reducing coatings for long life, to a complete line of pneumatic foundry vibrators.  If the best solution involves electric vibrators, Cleveland Vibrator has wide range of rotary electric vibrators available with operating frequencies between 900 and 3600 rpms with force outputs from 30 to over 40,000 lbf!  That’s some flexibility for sure.

What is fabricated equipment design flexibility? 

Designing Fabricated Vibratory Equipment that is built-to-spec requires a large amount of unique options best suited to fit the application and process requirements. Design flexibility is key for a successful install of vibratory equipment into an existent process. Read More…
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If Archie Bunker Designed Vibratory Equipment…

By CVC Team

When I joined the Cleveland Vibrator family, I had just graduated with a Bachelor’s degree in Mechanical Engineering and had no prior experience in the field of industrial vibration or vibrators. During the course of my formal education, I had one class that dealt with vibration, the focus of the class as I recall was how to eliminate it, certainly not how to use it to perform meaningful work. When I was hired on, my informal education into the world of industrial vibrators and vibration began. Just like coming into any family, you learn the way the family works, the teams they root for, the legends they admire and the folks to be avoided.  I feel fortunate that I had some excellent family members to bring me up in the world of vibration.

When it comes to vibratory equipment there are many ways to introduce vibration into a structure and produce the desired results. You may be looking to use vibration to move bulk material from point A to point B, screen large particles from small or compact more material into a box.  Read More…
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How to Design and Size a Vibratory Feeder Conveyor Based on Application Requirements

By CVC Team
vibratory feeder, vibratory conveyor, rendering vibratory feeder, pneumatic vibratory feeder, pneumatic feeder, air-powered feeder, industrial vibration, industrial vibrator
Figure 1. Air Powered Vibratory Feeder Conveyor

Along with our other vibratory equipment, vibratory feeders are great problem solvers. Feeders are well-known for their ability to move material from point A to point B effectively. However, a well-designed vibratory feeder offers flexibility to the end-user and increased safety and efficiency in the process.

Feeders can range from small base mounted CF-A, pneumatic powered feeders moving small quantities of dry bulk material in a controlled manner to a much larger base, as well as a cable-supported EMF, electromechanical feeder conveying literally tons of material an hour. This breadth of design capabilities allows our vibratory feeders to move material effectively in various industries for many different applications.

For example, we have incorporated vibratory feeders into the processes of these materials and more:

  • Almonds
  • Crushed Limestone
  • Shelled Corn
  • Powdered Metal
  • Metal Billets
  • Various Pipe Fittings
  • Scrap Brass and Bronze
  • Crushed and Shredded Automobiles
  • Hot Dross

We work with a variety of industries feeding an endless variety of materials!

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Installing Vibratory Aids on Equipment: What Are My Options?

By CVC Team

It seems to me that most applications start with a problem to solve; improve a process, simplify an operation, increase yield or throughput, or remove a bottleneck.  This problem could be as simple as placing the appropriate size pneumatic piston vibrator on the side of a hopper.  It could entail getting the right air-cushioned vibrator such as the 1200 VMSAC or maybe a single impacting SI vibrator along with the matching SMP mounting channel and controls.  Or the problem could be broader with concerns regarding the process or task to be accomplished and the design envelope into which the solution must fit and then interface with other equipment.

Regardless of the problem, options and choices are always good. 

cleveland vibrator vibratory conveyor, electric vibratory conveyor, electric vibratory feeder

Uras Techno Rotary Electric Vibrators Placed Below the Table Deck

Often with equipment one of the first things that comes up in initial discussions is the design height or discharge height of the unit.  With vibratory feeders (EMF) and screeners (EMS) there’s always a concern about the product discharge height, as the equipment is often feeding material downstream to other devices.  One of the options that impact the design and therefore the height of the unit is the location of the vibrators.  Typically on vibratory feeders and screeners, the default Read More…


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3 Variables to Consider That Influence Material Flow from Vibratory Hopper Feeders

By CVC Team

When it comes to a vibratory hopper feeder and end-user requirements, The Cleveland Vibrator Company has worked with customers that span the range from simply wanting to increase material flow from point A to point B to more precise applications sending bulk material to downstream processes.

Customer Example

For example, we had the opportunity to visit a local customer and assist him with setting up a hopper feeder unit. Their goal was to place a dry material into plastic trays while they moved on a conveyor under the feeder. Precise metering of the dry material into the trays is critical to this customer’s success. 

It seemed this would be an excellent opportunity to discuss material flow and the impacting parameters. As mentioned, the equipment provided by The Cleveland Vibrator Company is a vibrator hopper feeder. The hopper is a stationary non-vibrating hopper with an adjustable slide gate. The vibratory feeder utilizes two rotary electric vibrators. A variable frequency drive (VFD) with a dynamic brake resistor controls the vibrators.

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Manufacturing Solutions, From Start to Finish.

By CVC Team

Cleveland Vibrator recently added a new employee in the Fabricated Equipment area of the company.  At the end of 2015 our CEO declared that 2016 would be a “year of investment” here in terms of both people and equipment.  It’s exciting to see this sort of thing happening, good people coming on board as well as some new CNC equipment on the immediate horizon.  It all makes Cleveland Vibrator a better company.  While getting to know a bit about our new guy in the Fab area, we talked some about his work experience and the opportunity at Cleveland Vibrator.  One of the things he already likes about the position is that he gets to see a piece of equipment completely manufactured, start to finish.  I told him that’s one of the things that I’ve always enjoyed about my job, getting to be involved with the complete process often starting with the solution concept generation phase to final testing of that solution prior to it shipping out to the customer.

I think most engineers are problem solvers and that’s one of the aspects of this profession that they find interesting and rewarding.  That’s certainly the case for me.  I’ve always found the diversity of Cleveland Vibrator’s customers and their problems very interesting.  Plus, I feel that we have a very “intimate” manufacturing process, it’s all here in one location.   Whether it’s the manufacture of a pneumatic piston vibrator, as an example the 1300 VMSAC, air cushion vibrator piston vibrator or a large vibratory feeder Read More…
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What’s the Difference Between Attached & Unattached Volumetric Hopper Designs for Vibratory Equipment?

By CVC Team

Generally speaking, in life, choices are a good thing.  This applies to industrial vibrators and vibrating equipment as much as it does for lunch time options.  In terms of fabricated vibratory equipment, Cleveland Vibrator offers a variety of solutions to processing and material handling problems.  Regardless if the need is for a vibratory feeder, screener, compaction table or vibratory belt table, our sales and application folks are up to the challenge of solving the particular needs and requirements of our diverse customer base.  As I mentioned in earlier blogs, when it comes to vibratory equipment, one size in fact doesn’t fit all.  Rarely do one customer’s particular requirements match up exactly with another customer’s, the solution may be similar in type but not in exact physical size.  Tailoring to meet the individual needs of each customer is part of the Cleveland Vibrator fabricated equipment DNA.

One of the many types of fabricated equipment manufactured by The Cleveland Vibrator Company is the volumetric feeder.   Internally, they are generally referred to as Hopper Feeders, RFM, these units can be pneumatic or electric powered.  The key design element is that a vibratory feeder has a storage hopper associated with it which accepts and stores dumps of material and then feeds the material out of the hopper in a controlled manner.  Read More…
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Turbine Vibrators, Views from the Way Back Machine…

By CVC Team
February 27, 1958
Engineering Department
Fafnir Bearing Company
New Britain, Connecticut
Gentlemen:
Submitted herewith is a sketch of a proposed bearing application.  This device is an industrial vibrator for use in handling sand, dusts and powders. The use of an eccentrically loaded turbine to product vibrations is novel to my knowledge and it produces some novel bearing problems. The device is designed to produce vibration, an action which is usually very guarded. A model of this device has been made and tested.  It has the nominal dimensions shown and runs approximately………
Yours very truly,
The Cleveland Vibrator Co.
Frank K. B…….
Professional Engineering Consultant

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How to Properly Adjust the Eccentric Weight on your Rotary Electric Vibrator

By CVC Team

In a recent blog, we talked about the importance of  “Counter rotation and synchronization” in the successful operation and maintenance of vibratory equipment. Now, we will touch on what you should do to properly adjust the eccentric weights on your rotary electric industrial vibrator.  Although these steps are straightforward, they are crucial to the operation and longevity of the vibrator. Properly setting your eccentric weights can assist in keeping your equipment and vibratory investment free from damage. This is a great opportunity for us to expand on this subject, and, to be honest, we just LOVE spreading #VibrationEducation!

How to calculate vibratory force?

First, let’s delve into everyone’s favorite subject: Math. Understanding these concepts can help explain why setting your eccentric weights is important, and how it impacts your industrial vibrator and equipment.  Any type of rotating vibrator, that includes rotary electric (RE), ball, or turbine vibrators generate their vibratory force by rotating a mass around the center of the unit or shaft.  The force produced is dependent on three parameters:

  1. Weight of the rotating mass
  2. The distance of the center of gravity of that mass from the center of rotation
  3. The rotational speed
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