Belt Installation Tension; Tips On Using The Sonic Tension Meter - Gates 508C Handbuch

Formula: T = 4 x S
UK
Where:
T = belt span tension (Newton)
S = length of the span to be measured (mm)
M = belt unit weight (g/m/mm)
F
W = belt width (mm) or number of belt strands
f = natural frequency of the belt (Hz)
Unlike a string, belts have cross-sectional
I
rigidity. Therefore, tension values measured
by the meter may be higher than the actual
belt tension, depending on the operating
conditions under which the effects of rigidity
arise. When the actual belt tension must be
E
more precisely measured, a simple calibration
test may be necessary. This calibration
procedure is discussed in the section on
"Meter recalibration for non-standard belts".
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5. Belt installation tension

D
Proper belt installation tension is essential
in V-belt, Micro-V
for optimum performance and reliability.
The correct installation tension for a belt,
PL
or set of belts, depends upon the drive
geometry and load conditions and must be
calculated. Procedures for calculating belt
tension are included in the appropriate drive
design manual or software. To determine
R
the belt tension recommended for specific
drive applications, either refer to the
appropriate drive design software
DesignFlex
TJ
www.gates.com/europe), or contact Gates
Application Engineering.
The following catalogues may be helpful:
›
Poly Chain
(E2/20109)
›
V-belt drive design manual (E2/20070)
›
Synchronous belt drive design manual
(E2/20099)
›
Long Length drive design manual (E2/20065)
6. Tips on using the
Sonic tension meter
Gates' Sonic tension meter is capable of
measuring belt tension with greater accuracy
and consistency than traditional methods.
It should not, however, be expected to produce
exact results in every case. Numerous factors
can influence the accuracy of the meter's
output, one must remember that traditional
methods of belt tensioning such as force/
deflection or belt elongation are approximate.
The following suggestions are provided to help
you achieve a high level of accuracy with Gates
Sonic tension meter.
›
After you have entered the correct numbers
into the meter, take at least three readings
to confirm that results are consistent and
that the meter is not erroneously reading
background noise.
›
When measuring the tension in synchronous
belts, use spans that are more than 20 times
longer than the tooth pitch. Using spans
8
x M x W x f
2
and synchronous drives
®
Pro (available for download on
® ™
GT2 belt drive design manual
®
x 10
2 -9