CHIARAVALLI
CHIARAVALLI GROUP S.p.A. manufactures the
HTD
®
pulleys in
the following pitches: 3mm., 5mm., 8mm. and 14mm. and in the
following versions:
a)
HTD
®
Pilot Bore pulleys
b)
HTD
®
with
Taper-Lock
®
taper bush
BELT IDENTIFICATION:
34
N° teeth
8M
pitch in mm
50
belt width
TL
Taper Lock
30
N° teeth
14M pitch in mm
50
belt width
CHARACTERISTICS OF THE
....
GOLE
DIAMETERS
WIDTH
MAXIMUM UNBALANCE
PULLEY
SURFACE
IN GRAMS
from 199 - 301
60
6
from 302 - 599
60
10
from 199 - 301
10
from 302 - 599
15
from 600 - 999
from 60 - 90
20
greater than 1000
30
from 199 - 301
20
from 302 - 599
30
from 600 - 999
from 100 - 199
40
greater than 1000
60
HTD
®
TIMING PULLEYS
with PILOT BORE
ECCENTRICITY
CONSTRUCTION TOLERANCE VALUES
PULLEY BALANCING VALUES
The
HTD
®
pulleys manufactured by our company are not balanced.
Balancing is performed at cost, only on request.
We are able to balance pulleys up to a maximum diameter of
560 mm. and issue the relative certificate.
TL 30 - 14M - 55
34 - 8M - 50
from Ø
0 to Ø 30
- 0
+ 0.05
from Ø
31 to Ø 50
- 0
+ 0.08
from Ø
51 to Ø 100
- 0
+ 0.10
from Ø
101 to Ø 179
- 0
+ 0.13
from Ø
180 to a Ø 300
- 0
+ 0.15
from Ø
301 to Ø 500
- 0
+ 0.18
from Ø
greater than Ø 510
- 0
+ 0.20
De pulley
Tolerance in mm
The bore and outer diameter must be concentric in
compliance with the tolerance values indicated below
external
Ø
Total eccentricity (mm)
mm
Total measurement of the comparison
up to 199
0.10
greater than 200
0.0005 for mm Ø
This value cannot exceed the tolerance
for the external Ø.