Interroll 80S - Measuring the Belt Elongation; Calculating the Belt Elongation

Interroll Drum motor series i, S, S/A, D
Assembly and installation
82
Version 4.1 (06/2015) en-US
Translation of original instruction manual
The belt elongation can very easily be determined using a measuring tape.
4
Mark the untensioned belt at two points in the center where the outer diameter of the drum
motor and the idler pulley are the largest due to the camber.
4
Measure the distance between the two markings parallel to the belt edge (Be0). The greater
the distance between the two markings, the more precise the belt elongation can be
measured.
4
Tension and align the belt.
4 Measure the distance between the markings (Be) again.
The belt elongation increases the distance.
Be [mm]
BeO [mm]
BW
BW
Measuring the belt elongation
The belt elongation can be calculated in % with the determined measure of the belt elongation.
B
e%
=
B
e
.
100%
B
e0
-100
Formula for calculating the belt elongation in %
Calculating the belt elongation requires the following values:
• Belt width in mm (BW)
• Static force per mm belt width with 1 % elongation in N/mm (k1 %). The value is recorded
on the data sheet for the belt or can be obtained from the belt supplier.
T
E
[static]
=
BW
.
k1%
.
B
e%
.
2
Formula for calculating the static belt tensioning force in N
Measuring the
belt elongation
Calculating the
belt elongation