CHIORINO
400
1.0
1.2
1.2
1.2
1.2
1.2
1.2
459
1.0
1.2
1.2
1.2
1.2
1.2
1.2
500
1.0
1.5
1.5
1.5
1.5
1.5
1.5
560
1.0
1.5
1.5
1.5
1.5
1.5
1.5
630
1.0
1.5
2.0
2.0
2.0
2.0
2.0
710
1.0
1.5
2.0
2.0
2.0
2.0
2.0
800
1.0
1.5
2.0
2.5
2.5
2.5
2.5
900
1.0
1.5
2.0
2.5
2.5
2.5
2.5
1000
1.0
1.5
2.0
2.5
3.0
3.0
3.0
1120
1.2
1.5
2.0
2.5
3.0
3.0
3.5
1250
1.2
1.5
2.0
2.5
3.0
3.5
4.0
1400
1.5
2.0
2.5
3.0
3.5
4.0
4.0
1600
1.5
2.0
2.5
3.0
3.5
4.0
5.0
1800
2.0
2.5
3.0
3.5
4.0
5.0
5.0
2000
2.0
2.5
3.0
3.5
4.0
5.0
6.0
0.3
0.4
0.5
0.6
0.8
1.0
b
h
D
P, PR, Z, LT
DG-E HS, T, DG HS
LL
P, PR, Z, T, DG HS,
LT, LL
DG-E HS
PR
DG-E HS, P, Z, T, DG HS
LT, LL
PR, P, Z, T, DG HS
LT 0÷6, LL 0÷4
DG-E HS, LT 9÷12, LL 6÷9
20
< 60
± 1
< 5.000
± 0,5%
60 ÷ 150
± 1,5
5.000 ÷ 20.000
± 0,3%
> 150
± 2
> 20.000
± 0,2 %
Width b
≤125
140 and 160
180 and 200
224 and 250
280 and 315
355
≥400
Diameter D
Dimension h max
Diameter D
Dimension h max
from 40 to 112
0,3
125 and 140
160 and 180
200 and 224
250 and 280
315 and 355
TAB. 1
Dimensions for pulleys having diameter
D from 40 to 355 mm (ISO R 22/DIN 111)
TAB. 2
Dimensions for pulleys having diameter D from 400 to 2000 mm
(ISO R 22 / DIN 111)
Asymmetric
Symmetric
Configuration of the pulleys
To assist tracking of the belt it is advisable to crown the drive pulley. When considering drives with minimal difference between
the pulleys’ diameters or with vertical or semi-crossed drives, it is advisable to also crown the smaller pulley, decreasing the h
value by half. With multiple pulley drives, the pulleys to be crowned are only those touched by the same face of the belt. It is
important to crown the pulley (s) as shown in the figure below. Do not fit pointed or truncated cone-shaped pulleys. Materials
recommended: cast iron or steel with smooth surface finish. The dimension h is a value of the pulley diameter up to 400 mm
(see table 1). For ø ≥ 400 mm, h is a value of the diameter ø, as well as the face width b of the pulley (see table 2).
Usually the belt width recommended is as a minimum 10 mm narrower than the pulley face width.
Flat belts structure
Top
surface
Polyurethane
Elastomer
Leather
Traction
core
class 0÷6
Mono ply polyamide
class 9÷12
Double ply polyamide
Polyester fabric
Driving
surface
Polyurethane
Elastomer
Leather
Rolls sizes
The maximum production width of the transmission belts is 500 mm.
Maximum rolls’ length (narrower, shorter, longer rolls can be supplied upon request):
120 m approx.
120 m approx.
60 m approx.
Endless belts tolerances
Width
[mm]
Length
[mm]