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Varisect belts

 

Varisect belts are characterized by a cross section and a nominal internal length. Compliant with ISO standards, these belts are created with a code composed of the letter W followed by a number (e.g. W16) which represents the pitch width (lp) in mm, and the letter P followed by a number (e.g. P500) which corresponds to the pitch length in mm. Starting from this last datum, it is possible to calculate two length alternatives: the external nominal length, by adding the x' value, and the internal nominal length, by subtracting the x'' value.

 
WXI mm
ISO
lp
β
13x6
-
12
26
17x5
W16
16
26
21x6,5
W20
20
26
22x8
-
21
26
26x8
W25
25
26
28x8
-
27
26
30x10
-
27
26
33x10
W31,5
31,5
30
36x12
-
34,5
30
37x10
W40
35
30
42x13
-
40
30
47x13
W50
44,5
30
52x16
-
50
30
55x16
-
52
30
65x20
W63
63
30
70x20
-
68
30
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