SEO Version
70
Minimum number of teeth and minimum diameter
Drive without reverse bending
• Timing pulley z
min
= 18
• Idler running on belt teeth d
min
= 120 mm
Drive with reverse bending and double sided belt
• Timing pulley z
min
= 25
• Idler running on belt back d
min
= 180 mm
rpm
[min
-1
]
M
tsp
[Ncm/cm]
P
sp
[W/cm]
rpm
[min
-1
]
M
spez
[Ncm/cm]
P
spez
[W/cm]
rpm
[min
-1
]
M
spez
[Ncm/cm]
P
spez
[W/cm]
0
1200
3400
20
1300
3600
40
1400
3800
60
1440
4000
80
1500
4500
100
1600
5000
200
1700
5500
300
1800
6000
400
1900
6500
500
2000
7000
600
2200
7500
700
2400
8000
800
2600
8500
900
2800
9000
1000
3000
9500
1100
3200
10000
Tooth shear strength
Other widths are available on request
ELA-flexSD
™
Technical data
Belt width [mm]
Allowable tensile load [N]
Weight [kg/m]
25
32
50
75
100
150
6700 8600 13400 20100 26800 40200
0,24 0,31 0,48 0,73 0,97 1,45
Belt characteristics
• Truly endless polyurethane timing belt with steel
tension cords. Metric pitch 10 mm
• Tooth profile and dimension are optimised to
guarantee uniform load distribution and mini
mum deformation under load
• High resistance and low stretch steel cords to
guarantee high stability and low elongation
• Reduced polygonal effect with reduced drive
vibration and noise
• Transmissible power up to 200 kW
• Rpm up to 6.000 [1/min]
• Maximum width:
150 [mm]
• Width tolerance:
±1,0 [mm]
• Thickness tolerance:
±0,2 [mm]
Flexibility
48,192 0,000
47,288 0,990
46,438 1,945
45,639 2,867
44,885 3,760
44,175 4,626
41,199 8,628
38,923 12,227
36,911 15,460
35,157 18,407
33,617 21,120
32,248 23,637
31,016 25,982
29,899 28,177
28,880 30,241
27,938 32,180
15,842 56,402
15,196 57,284
14,579 58,009
13,993 58,609
12,643 59,576
11,427 59,829
10,320 59,432
9,304 58,456
27,063 34,006
26,251 35,734
25,487 37,363
25,197 37,994
24,771 38,907
24,096 40,370
23,456 41,755
22,845 43,059
22,269 44,305
21,715 45,477
20,681 47,641
19,729 49,580
18,844 51,303
18,023 52,841
17,252 54,196
16,527 55,377
AT20
The total power “P” and the total torque
“M” transmitted by the belt, are calcula-
ted with the following formulas:
P [Kw] = P
spez
•
z
e
•
z
k
•
b / 1000
M [Nm] = M
spez
•
z
e
•
z
k
•
b / 100
Z
e
=
P
= power in Kw
M
= torque in Nm
P
spez
= specific power
M
spez
= specific torque
z
e
= number of teeth in mesh of
the small pulley
z
emax
= 12
z
k
= number of teeth of the small
pulley
b
= belt width in cm
A
= centre distance [mm]
( )
⎥
⎥
⎦
⎤
⎢
⎢
⎣
⎡
⋅π⋅
− ⋅
⋅
⋅
A 2
z z t
arccos
180
Z
k
g
k
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