alouette@san.rr.com
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| Do Your Bearings Quit Early? |
Bearings can be extremely susceptible to stress...especially at high loads,
speeds and temperatures.
Properly designed, efficient bearings can yield
exemplary machinery operation for extended lives. Bearing failure can lead
to insidious, slow, or sudden worsening of machinery functioning.
Failures of several types in bearings can be responsible for numerous
untimely machinery breakdowns. Fatigue "spalling" results from excessive
loading, where small particles of steel flake off, progressively destroying
the contact surfaces within the bearing. Wear failures may occur when there
is insufficient load on a bearing to keep it operating. Abrasive particles
in the lubricant can produce a gradual worsening of machinery vibration
characteristics by wear also. "Brinelling" wear can be caused by external
vibration. It can eventually lead to fatigue failure. Mounting-induced
failures can result in excessive vibration and short fatigue life.
These and other bearing failures can cost your company substantial amounts
of time, effort, money, and customer good will.
Do you suspect quality defects in some of your bearings?
You may be cheated
of the extended life and reliability of your machinery because of poor
bearing performance.
Failure of ball or roller bearings can have serious consequences such as:
- Disruption of customer's operational plans
- Damage which can cause a delay in shipment and
- delivery of machinery
- Significant additional expense for repair or replacement
- of components
- Increased labor, time, and costs to investigate, determine
- and implement corrective action
- Exposure to claims by your customer for compensation
- Risk to your industry reputation and repeat business
Your customers trust you to produce predictable, high quality machinery
with a guaranteed life expectancy. Your repeat sales and industry
reputation depend on it!
Alouette Technology
is a mechanical engineering consulting service
specializing in ball and roller bearings.
With over 40 years of training
and experience in the turbomachinery industry, Alouette Technology can
eliminate your need for short-term or specialized in-house staff. We can
investigate and correct bearing related malfunctions. From bearing design
and problem solving to related technologies such as lubrication,
filtration and oil system debris monitoring, Alouette Technology can
provide solutions to your bearing challenges whether low-tech or state-
of-the-art.
Design
Bearings must be carefully designed to get the best results.
Often catalog
sizes can be found to suit shaft and housing preferred dimension
Otherwise, a special design may be necessary. Other factors can include
high loads or rotational speeds and unusual or corrosive environments.
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Design which takes into consideration atypical requirements at the outset
will eliminate the need for expensive repairs and lost time later.
The bearing and lubrication system industry-standard computer code
"SHABERTH" is used for analyses. We can determine whether the life of the
standard bearing meets
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requirements or a special design is dictated. With the code's heat transfer
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BALL BEARING
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capabilities, the specific bearing internal
geometry needed to meet life requirements and lubricant selections can be
defined. Bearings strongly influence machinery rotor dynamics. We can check
whether changes are needed to the system or the environment to improve the
performance and reliability of your
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ROLLER BEARING
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machinery. All our attention to proper design details is intended to help you
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save time, effort, and money, as
well as avoid warranty claims and enhance your reputation.
Procurement
Obtaining competitive prices from bearing manufacturers is critical to
your bottom line.
We have procured bearings at competitive rates from most
of all the major bearing vendors in North America and the European Union.
We have the skills to make your special designs cost effective. Preparation
of a proper engineering drawing facilitates selection of the most
advantageous vendor and negotiation of both price and technical
requirements. Alouette Technology has extensive experience inspecting new
bearings
to avoid problems and early failure.
Negotiating timely
delivery, dimensional inspections for discrepancies and metallurgical lab
examinations, when required, help to integrate procurement into your
project's schedule.
Alouette Technology keeps up to date on emerging technologies such as
all-ceramic bearings, oil-less lubrication for high-speed operation,
water-lubricated high-speed tilt pad journal bearings and zero-leakage
face seals. These and other innovations can help to keep your profits high.
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Left side:
All-Ceramic Bearing, with
Silicon Nitride Balls and
Races, Incoloy 600
Low-Expansion,
High Temperature
Alloy Steel Cage
Right side:
All-Steel (M.50 Alloy)
Bearing, with AISI 4340
Steel Cage
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Water-Lubricated Tilt Pad
Journal Bearing of 17-4PH
Stainless Steel with Carbon
Graphite Lining
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Water Lubricated Zero-Leakage
Face Seal with INCO Alloy
718 Spiral Grooved Runner and
Carbon Graphite Stationary
Member
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Development
We can develop handling and installation procedures to ensure that no
corrosion or damage occurs to the bearing
after receipt and during assembly into your equipment.
We can advise what instrumentation should be installed
for initial testing to
verify proper function of the bearing system.
Alouette Technology can assist with acquiring and interpreting the data
obtained. We will carry out post-test inspection of the bearings, then
derive conclusions and suggest appropriate follow-up action.
Service Support
As newly developed machinery enters production, inevitably there are
differences between prototype and production machines.
The involvement of different vendors and part manufacturing methods, size tolerances,
materials or configuration changes all can cause problems with machinery.
At Alouette Technology, we look for subtle indications to confirm the
likelihood of
bearings meeting and exceeding guaranteed or anticipated
lives.
We quickly pinpoint factors which will undermine successful
development efforts with short-life failures. If there is an obvious
necessity for a bearing change, the more quickly it is identified, the
more likely corrective action can be undertaken before significant
problems arise.
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Failure Investigation
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When bearing failures occur, the operation and production of complicated,
expensive machinery can be placed at risk.
Careful examination of bearings
will usually allow pinpointing the cause of fatigue spalling, "basket case"
failure, brinelling wear and other types of bearing malfunction. Related
technologies such as lubrication, filtration, and oil system debris
monitoring are very system aspects of bearing performance and will be
carefully examined.
We can save your company precious time and resources
by quickly identifying the cause of bearing failure and recommending
practical solutions.
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HERE'S THE MAN BEHIND IT ALL! |
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George W. Hosang
is the Managing Consultant and Owner, with wife Karen,
of Alouette Technology, a consulting firm specializing in rolling contact
bearing engineering. A graduate of the Royal Military College of Canada
and the University of Toronto, he was awarded a Bachelor of Applied
Science in Mechanical Engineering. While an officer in the Royal Canadian
Air Force he had full time military flying duties in an all-weather jet
fighter interceptor squadron.
In 1965, Mr. Hosang was awarded the prestigious Athlone Fellowship for
postgraduate study at the University of Leeds, England and obtained a
Master of Science degree in Tribology, the science of friction, wear,
lubrication, bearings, and gearing. Leeds University is one of the major
sites in the world of this emerging technology.
Mr. Hosang has been a Principal Engineer for Rolls-Royce, General
Electric Aero Engines, Pratt and Whitney Aircraft, Solar Turbines Inc.,
and Sundstrand Corporation where he worked on long-life and all-ceramic
bearings for turbine engines.
Alouette Technology was founded in 1995 and has since built a solid
reputation as a consulting firm assisting numerous turbomachinery
manufacturers.
Select ALOUETTE Clients
SOLAR TURBINES INC., San Diego, CA
HAMILTON SUNDSTRAND DIV UNITED TECHNOLOGIES CORP., San Diego, CA
CAE-ALPHEUS CLEANING TECHNOLOGIES, Rancho Cucamonga, CA
BOWMAN POWER SYSTEMS LTD., Southampton, England
BEARING INSPECTION INC., Los Alamitos, CA
CHEM-TRONICS INC., El Cajon, CA
"George Hosang knows how to push the envelope without going out of
bounds. He has searched for and found stock bearings that could be used
in truly tough, demanding applications."
-- Alan Opel, COO & VP Engineering,
Canadian Aviation Electronics
- Alpheus Cleaning Technologies
REMEMBER -- if it goes around,
there most likely are bearings of some kind
inside that need proper care and attention
even if they seem to be operating fine!
Call ALOUETTE a n y t i m e at
858-277-8698
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ALOUETTE
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