Correct sizing is only part of a successful industrial vibration application. The vibrator must also be mounted in the correct location, attached to a properly designed mounting structure and supplied with the correct air or electrical power.
Many performance and equipment-life problems can be traced to installation or maintenance issues such as loose mounting hardware, poor vibration transfer, inadequate pneumatic airflow or incorrect rotary-electric vibrator setup.
Read to Learn More: Proper Installation of Industrial Vibrators
Where should an industrial vibrator be installed on a hopper?
Mount the vibrator where its energy can reach the material-flow problem.
For a typical sloped hopper, the first vibrator is commonly located partway up the sloped wall from the discharge. Multiple-vibrator installations use additional locations and staggered heights based on vessel geometry.
Read to Learn More: Proper Installation of Industrial Vibrators
Do I need a mounting channel or mounting plate?
In many bin and hopper applications, yes. The mounting channel or reinforcement structure helps transfer the vibrator’s force into the vessel wall over an appropriate area rather than concentrating the load at the vibrator’s bolt pattern.
A properly designed mounting system is important for both vibration performance and vessel integrity.
Read to Learn More: Stopping Fatigue Failure During Vibrator Installation
Can I bolt an industrial vibrator directly to a hopper wall?
That depends on the vibrator and vessel design, but simply bolting a vibrator to an unsupported thin wall is generally not the preferred approach for many hopper applications.
Mounting channels or stiffener plates can distribute vibratory energy and provide a rigid mounting surface.
Read to Learn More: Proper Installation of Industrial Vibrators
Should the mounting channel be continuously welded to the hopper?
Follow the installation instructions for the specific mounting arrangement. General bin-vibrator guidance may call for stitch welding a mounting channel or stiffener plate rather than a continuous weld, depending on the design.
The purpose is to transfer vibration effectively while avoiding stress concentrations that can contribute to fatigue.
Read to Learn More: Proper Installation of Industrial Vibrators
Why do my vibrator mounting bolts keep coming loose?
Vibration naturally places cyclic loads on the mounting system, so correct hardware, torque and inspection are important.
Loose bolts can allow the vibrator body to move relative to its mounting surface, reducing performance and potentially accelerating wear.
Read to Learn More: Tighten Those Bolts: Pneumatic Vibrator Maintenance
How often should vibrator mounting bolts be checked?
Inspection frequency should reflect how frequently and severely the vibrator is used. A high-duty application should be inspected more frequently than a unit that operates only occasionally.
Periodic mounting-bolt checks are important because loose hardware can reduce performance and contribute to mechanical problems.
Read to Learn More: Tighten Those Bolts: Pneumatic Vibrator Maintenance
Why is my pneumatic vibrator not producing enough force?
Check the air supply before assuming the vibrator itself has failed.
Possible causes include insufficient pressure, inadequate airflow, an undersized hose or fitting, a restricted valve, contamination, an improperly configured filter/regulator/lubricator system or internal wear. An inadequate air supply can effectively choke a pneumatic vibrator.
Read to Learn More: Proper Installation of Industrial Vibrators
Does a pneumatic vibrator need a filter, regulator and lubricator?
It depends on the vibrator style.
Appropriate filtration and regulation of the air supply are generally important, while lubrication requirements vary. Some piston designs require lubrication, while certain turbine and ball vibrator designs do not require external lubrication.
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Why did my pneumatic vibrator stop working?
Potential causes include restricted or contaminated air, inadequate airflow, loose mounting hardware, internal wear, damaged seals or gaskets, or problems specific to the vibrator operating principle.
For piston vibrators, contamination and poor lubrication can accelerate piston and bore wear. Maintenance and troubleshooting should follow the IOM recommendations for the exact model.
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Why does my pneumatic vibrator sound like it is running but no longer works as well?
Wear can reduce force even while the vibrator still produces noise.
Some components can wear gradually, allowing a unit to continue sounding active even though useful vibration has diminished. Similar performance loss can occur when other components wear or the air supply changes.
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Why is my rotary electric vibratory equipment moving sideways?
One possible cause on a dual-motor brute-force system is incorrect motor rotation or synchronization.
Two rotary electric vibrators used to create linear vibration need to operate at the same speed in opposite rotational directions. If they are not properly counter-rotating or synchronized, the equipment may not produce the intended linear motion.
Read to Learn More: Rotary Electric Vibrator Troubleshooting
How do I know if two rotary electric vibrators are synchronized?
Both motors should be operating at the same speed in opposite directions, with their eccentric weights properly set.
A strobe can be used to observe the relationship between the two sets of rotating weights. When correctly synchronized, their positions should appear in the intended mirrored relationship.
Read to Learn More: Rotary Electric Vibrator Troubleshooting
Do the eccentric weights on two rotary electric vibrators need to be set the same?
Yes, on a paired-vibrator system designed for synchronized linear vibration, corresponding eccentric weights should be set consistently.
Unequal settings can result in unequal force output and interfere with the intended equipment motion.
Read to Learn More: Rotary Electric Vibrator Troubleshooting
Why are my rotary electric vibrators no longer synchronizing?
Possible causes include a developing problem with one motor, bearing or lubrication issues on applicable models, improper eccentric-weight settings or loose vibrator mounting bolts.
Mounting-bolt tightness and vibrator condition are important items to investigate when synchronized operation is lost.
Read to Learn More: Rotary Electric Vibrator Troubleshooting
Can improper vibrator installation damage a hopper?
Yes. Incorrect sizing, mounting location, reinforcement or installation can introduce stresses the vessel was not designed to handle.
An appropriately sized vibrator and properly designed mounting structure should work together to distribute vibration through the vessel rather than concentrate it at one small point.
Read to Learn More: Proper Installation of Industrial Vibrators
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