|
See NASA quote.
Why SureBolt?
Measures tension not torque,
Patented whole echo method,
Graphs tension changes in
real-time,
Instrument is built into the
PC,
13.3" Color TOUCHSCREEN
Friction varies too much,
bolt to bolt,
Not fooled by friction
variations,
Using lubrication still
leaves large friction variations,
Avoid flange leaks,
Prove to safety you took a
reliable tension reading,
Far greater reliability,
All other bolt gages are
one-point bolt gages,
No more zero-crossing peak
jumping,
ALL other bolt gages have
problems with peak jumping,
Dramatic improvement due to
a new patented DSP technique,
Proven by NASA,
Can record over a million
bolt tensions with their waveforms,
Playback built in,
Excel compatible data files,
Flange bolts easily grouped
together,
Critical bolts,
Verify your design,
Safety,
Tension verification,
Accuracy,
Much easier to use,
Graphical help,
On-line help,
Dynamic help,
13" Color Screen instead of
5" black & white screen,
Full keyboard instead of a
few cryptic keys,
Record field notes with your
tension data,
You can use long file names,
Large on-screen buttons,
Familiar WinXP/2000
operating system,
Full featured laptop -
Panasonic Toughbook Model 72 computer,
1
year limited warrantee,
No need to transfer data to
another machine,
No hidden information,
To sum it up, vastly easier
and more reliable.
Press here for a detailed point by point comparison to all other bolt gages.
| |
 |
A Perfect Torque Value Still Gives You A
Large Tension Error!
Over 50 web pages on torque,
tension, & bolted joints.
|
|
Torque Wrench or Tension Wrench?
The number one reason for bolt failures
and flange leaks is improper bolt tension. Why?
Identical bolts, when tightened to
identical torque
values, will vary substantially in their actual tensions (typically plus or minus
25%, and not uncommonly plus or minus 50%).
Why? Because 85% of your torque is
consumed by friction. Then this friction varies on EACH
bolt (even the same bolt at different times). Flange
bolts' tensions easily vary 50% or more.
Note: New ultrasonic invention cannot be fooled by friction variations.
See ultrasonic video.
Friction has always
been the
problem. See why NASA's Space Station
engineers used the new technology called SureBoltTM.
| Press---here, to go to the
main information page for bolt tension, torque, ultrasonic solutions,
..., etc. |
See
which section below is the best way for you to find the information you want. Each section has useful information on friction, torque wrench errors, bolt
failures, bolt gage, stress, strain, yield, and flanges. Press here
for the main SureBolt page. There are even outside links to the web's best bolted joint
tutorial.
A. Mechanical engineering
departments often
teach their mechanical engineers to design bolted joints by calculating bolt
tension, not bolt torque. Yet, mechanical engineers
using stress analysis software and structural analysis
software are often limited by bolt tension errors. See a FLASH animation of this
new technology to measure actual bolt tension,
not just bolt torque.
B. After all the mechanical engineering,
structural engineering, and civil
engineering classes on stress analysis calculations, why do some bolted
joints fail? Here is a list of information that may be useful for a
bridge designer, flange designer, torque wrench
user, bolted joint designer, or engineering lab using structural
analysis software, stress analysis software, or bolted joint design software.
C. New NDT
& NDE Technology Advances Bolted Joint
Design. New NDT
& NDE Technology Advances Bolted Joint
Design. New DSP technology, PC technology, and
ultrasonic technology combine to measure actual bolt tension,
not just bolt torque. Nondestructive testing new
technology.
D.
Stress analysis
software and structural analysis
software packages are often limited by bolt tension errors.
E.
Flanges. After all the engineering classes on flange design,
why do some flanges leak?
F.
Bolt & Nut
Tension, not bolt & nut torque.
Why do bolts fail and flanges leak? Bolt tension
errors become one of the main factors.
After all the engineering classes on
bolt & nut
selection,
why do some bolts fail? After all the American Society
of ... procedures, why such errors?
DSP technique more reliably measures actual bolt tension,
not just bolt torque. New patented
technology.
|
| Press---here, to go to the
main information page for bolt tension, torque, ultrasonic solutions,
..., etc. |
|
This site tries to give you some answers to bolting problems. Even an engineering lab
will find this site a good resource for their students. Remember, a
torque wrench with a bolt gage, can help prevent bolt failures and flange leaks.
Visitors since 1-22-02
|
|
[
