BRECOflex SM5 - Check and Set Pre-Tension

4 SM5 Tension Meter
SM5 Tension Meter
Check and Set Pre-tension
Use the SM5 to check belt pre-tension
Use the SM5 to set belt pre-tension
Calculate the pre-tension Fv using the frequency f read from the meter
Calculate the frequency f required to achieve a target frequency Fv. Alternately use our online calculation
program recommendation.
Note: These values are built in to the BRECOex SM5 Pretension Calculator App. Download the App for
free for iOS on The App Store or Android on Google Play.
For videos on how to use the SM5 Tension Meter, calculate pre-tension, use the SM5 Pretension
Calculator App and more, visit our YouTube channel at www.youtube.com/brecoexcollc.
F
v
=
f
2
•
L
2
•
4
•
m
•
b
Fv [N] current pre-tension in Newtons (1lbf = 4.45N)
f [Hz] frequency read from the meter
L [m] free vibrating span length in meters
m [Kg/m/cm] belt mass in kilograms per meter of length per centimeter belt width
b [cm] belt width in cm (1” = 2.54cm) (1cm = 10mm)
Fv [N] target pre-tension in Newtons (1lbf = 4.45N)
f [Hz] frequency reading
L [m] free vibrating span length in meters
m [Kg/m/cm] belt mass in kilograms per meter of length per centimeter belt width
b [cm] belt width in cm (1” = 2.54cm) (1cm = 10mm)
f =
F
v
L
2
•
4
•
m
•
b
Belt Mass - Steel Cord [kilograms per meter of belt length per centimeter of belt width]
Belt Pitch Single Sided
Double Sided
AT3
AT5
ATL5
ATK5K6
AT10
ATL10
ATL 20
ATK10K6
ATK10K13
BAT10/BATK10
ATP10
SFAT10
ATS15
BAT15/BA
ATP15
SFAT15
AT20
ATK20K13
AT8 MOV
AT10 MOV
AT15 MOV
TK15
ATP15
SFAT15
AT20
ATL20
ATK20K13
SFAT20
Belt Pitch Single Sided Double Sided
0.022
0.033
0.068
0.070
0.100
0.037
0.034
0.058
0.068
0.111
0.059
0.066
0.059
0.060
0.058
0.100
0.084
0.080
0.088
0.096
0.110
-
0.041
-
-
-
-
-
0.076
-
-
0.077
-
-
0.064
-
0.118
-
0.088
-
0.125
-
T2
T2.5
T5
TK5K6
T10
TK10K6
TK10K13
T20
MXL
T1/5” = XL
T3/8” = L
T1/2” = H
T7/8” = XH
HTD 3M HP
HTD 5M HP
HTD 5M HF
HTD 8M HP
HTD 8M HF
HTD 14M HP
0.096
0.012
0.017
0.021
0.024
0.045
0.046
0.057
0.074
0.012
0.024
0.035
0.043
0.104
0.031
0.041
0.034
0.063
0.054
0.113
-
-
-
0.028
-
0.058
-
-
0.100
-
-
-
0.052
-
-
-
-
-
-
-