ROSTA
4.10
Tensioner Devices
Tensioning roller standard type R (blue)
Type
Art. No.
Max. speed
[ rpm
]
Max.
belt width
A
B
C
D
E
max.
F
Torque hex nut
[Nm]
Size SE
Weight
[kg]
R 11
R 15/18
R 27
R 38
R 45
06 580 001
06 580 002
06 580 003
06 580 004
06 580 005
8000
8000
6000
5000
4500
30
40
55
85
130
30
40
60
80
90
35
45
60
90
135
2
6
8
8
10
14
16
17
25
27
5
7
8
10
12
M8
M10
M12
M20
M20
25
20
35
165
165
11
15/18
27
38
45
0.08
0.17
0.40
1.15
1.75
Tensioning roller
Type R and RL
ø
A
F
E
C
B
D
Tensioning from “inside” of the belt drive with grooved pulley
– Installation in slack span of the belt drive, make sure that the belts are
maintaining sufficient contact-arc on the driver- and driven-pulley.
– By extremely long centre distances between driver and driven pul-
ley it is recommendable to use on the tensioner a deep-grooved
pulley to avoid excessive slack beating.
Tensioning with flat roller on belt back
– The diameter of the flat tensioning roller should at least measure
2
⁄
3
of the diameter of the smallest pulley in the drive.
–
The width of the tensioning roller should be at least 20% wider than
the overall width of the belt set.
– Installation on the belt back in the slack span, make sure that the
belts are maintaining sufficient contact-arc on the driver and driven
pulley.
a) Modalities of tensioning
See also complementary mounting instructions on page 4.5.
Accessories belt drives
Instructions for belt drives
Tensioning roller light type RL (black). Designed for light-duty drives.
Type
Art. No.
Max. speed
[ rpm
]
Max.
belt width
A
B
C
D
E
max.
F
Torque hex nut
[Nm]
Size SE
Weight
[kg]
RL 11
06 580 901
6000
30
30
35
3
19
10
M8
25
11
0.08
RL 15/18
06 580 902
6000
40
40
45
6
21
9
M10
49
15/18
0.17
RL 27
06 580 903
4500
55
60
60
8
22
8
M12
86
27
0.50
new
new
new