Page 19 - 1_usa.qxp

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Belt characteristics
• Polyurethane timing belt with steel tension cords.
• Metric pitch 20 mm
• Tooth profile and dimension are optimised to guarantee uni-
form load distribution and minimum deformation under load.
• High resistance and low stretch steel cords to guarantee high
stability and low elongation
• Reduced polygonal effect with reduced drive vibration.
• Particularly suitable for linear drives and heavy power tran-
smission applications with high axial and angular positioning
accuracy.
• Width tolerance: ±1,0 [mm]
• Length tolerance: ±0,5 [mm/m]
• Thickness tolerance: ±0,4 [mm]
rpm
F
Uspez
[N/cm]
rpm
F
Uspez
[N/cm]
rpm
F
Uspez
[N/cm]
rpm
F
Uspez
[N/cm]
Belt width
b
[mm]
Allowable
tensile load
Type M
F
Tzul
[N]
Allowable
tensile load
Type V
F
Tzul
[N]
Breaking
load
Type M
F
Br
[N]
Specific
spring rate
C
spez
[N]
Weight
[kg/m]
25
32
50
75
100
150
5500
7500
12000
18500
24500
37000
1375000
1875000
3000000
4625000
6125000
9250000
19030
25950
41520
64010
84770
128020
2750
3750
6000
9250
12250
18500
0,24
0,31
0,48
0,73
0,97
1,45
Tooth shear strength
Other widths are available on request.
0
151,40
20
148,56
40
145,89
60
143,38
80
141,01
100
138,78
200
129,43
300
122,28
400
115,96
500
110,45
600
105,61
700
101,31
AT20
Technical data
4500 39,72
5000 35,90
5500 32,42
6000 29,23
6500 26,29
1900 69,96
2000 68,22
2200 64,97
2400 61,98
2600 59,20
2800 56,62
3000 54,20
3200 51,92
3400 49,77
3600 47,74
3800 45,80
4000 43,96
800
97,44
900
93,93
1000 90,73
1100 87,77
1200 85,02
1300 82,47
1400 80,07
1440 79,16
1500 77,82
1600 75,70
1700 73,69
1800 71,77
Load / Elongation [ % ]
Tooth shear strenght / rpm
The specific load F
Uspez
is the maximum load which one single
belt tooth 1 cm wide can withstand in all operating conditions.
This force is related to the drive rpm.
The total load F
U
transmissible by the belt in the dr ive is
calculated by:
F
U
[N] = F
Uspez
•
z
e
•
b
F
U
[N]
= peripheral force
F
Uspez
[N/cm] = specific load
z
e
= number of teeth in mesh in the small pulley
z
emax
= max. no of teeth in mesh to be considered
for the calculation of the drive
z
emax
= 12 for ELATECH
®
M
z
emax
= 6 for ELATECH
®
V
b [cm]
= belt width in cm
F
Uspez [N/cm]