SEO Version
Minimum number of teeth and minimum diameter
Drive without reverse bending
• Timing pulley z
min
= 12
• Idler running on belt teeth d
min
= 60 mm
Drive with reverse bending and double sided belt
• Timing pulley z
min
= 20
• Idler running on belt back d
min
= 60 mm
rpm
[min
-1
]
M
spez
[Ncm/cm]
P
spez
[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]
10
16
25
32
50
75
100
150
1000 1600 2400 3100 4800 7200 9600 14300
0,05 0,07 0,12 0,15 0,23 0,35 0,46 0,69
Belt characteristics
• Truly endless polyurethane timing belt with steel
tension cords according to DIN 7721 T1
• Metric pitch 10 mm
• Ideal for dr ives where high belt flexibility is
requested
• Allows to use small diameter pulleys
• Transmissible power up to 30 kW
• Rpm up to 10.000 [1/min]
• Maximum width:
150 [mm]
• Width tolerance:
±0,5 [mm]
• Thickness tolerance:
±0,2 [mm]
Flexibility
8,244 0,000
8,009 0,168
7,805 0,327
7,627 0,479
7,472 0,626
7,339 0,768
6,804 1,425
6,411 2,014
6,105 2,557
5,857 3,066
5,648 3,549
5,467 4,007
5,306 4,445
5,163 4,866
5,034 5,271
4,916 5,663
3,460 12,318
3,385 12,761
3,312 13,179
3,245 13,592
3,088 14,549
2,946 15,424
2,817 16,224
2,701 16,969
2,593 17,646
2,492 18,269
2,398 18,836
2,311 19,359
2,228 19,832
2,150 20,264
2,077 20,661
2,007 21,015
4,808 6,042
4,708 6,409
4,614 6,764
4,577 6,902
4,526 7,109
4,444 7,445
4,366 7,771
4,292 8,090
4,222 8,401
4,157 8,706
4,033 9,291
3,920 9,851
3,815 10,386
3,718 10,901
3,626 11,389
3,541 11,866
T10
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
66
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