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76
Minimum number of teeth and minimum diameter
Drive without reverse bending
• Timing pulley z
min
= 18
• Idler running on belt teeth d
min
= 50 mm
Drive with reverse bending and double sided belt
• Timing pulley z
min
= 18
• Idler running on belt back d
min
= 120 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
15
20
30
50
85
100
150
1600 2400 3200 4800 7900 13400 15800 23700
0,07 0,10 0,13 0,20 0,33 0,56 0,66 1,00
Flexibility
9,422 0,000
9,246 0,194
9,083 0,380
8,933 0,561
8,794 0,737
8,666 0,907
8,160 1,709
7,853 2,467
7,516 3,148
7,220 3,780
6,959 4,372
6,728 4,931
6,519 5,461
6,330 5,965
6,156 6,446
5,996 6,907
3,936 14,013
3,826 14,421
3,721 14,805
3,621 15,166
3,390 15,975
3,183 16,663
2,994 17,241
2,821 17,720
5,848 7,348
5,709 7,772
5,580 8,180
5,530 8,338
5,458 8,572
5,343 8,951
5,233 9,316
5,130 9,669
5,031 10,010
4,937 10,340
4,761 10,968
4,599 11,557
4,448 12,110
4,308 12,630
4,176 13,119
4,053 13,580
HTD8M
Belt characteristics
• Truly endless polyurethane timing belt with
round tooth profile and steel tension cords.
Produced according to ISO 13050
• Metric pitch 8 mm
• The round tooth profile, allows a uniform load
distribution that guarantees high performance,
high transmissible torque and
precise tooth engagement
• Transmissible power up to 80 kW
• Rpm up to 10.000 [1/min]
• Maximum width:
150 [mm]
• Width tolerance:
±0,5 [mm]
• Thickness tolerance:
±0,2 [mm]
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