CHIARAVALLI
“T”
METRIC
EXECUTIONS
TIMING PULLEYS
DIMENSIONAL FEATURES
STANDARD WIDTH FOR BELTS
AND SHEARING TOLERANCES
belt pitch
belt width
width tolerance
(mm)
(mm)
T 2.5
(2.5 mm)
6
± 0.03
T 5
(5 mm)
10
16
± 0.5
25
T 10
(10 mm)
16
25
32
± 0.5
50
Polyurethane belt body
Steel reinforcing
A
B
P
= Pitch
Z
= N° of teeth
Ø p = Pulley pitch line
Ø e = External diameter
Lp
= Pulley width
Lc
= Belt width
Lpc = Belt pitch line length
12
= Belt width in mm.
T10 = Toothing pitch in mm.
440 = Pitch line length in mm.
SYMBOLS
12 - T10 - 440
Belt pitch line circumference
Pulley pitch line
circumference