CHIARAVALLI
CHIARAVALLI GROUP
BRAND
GIFLEX
®
GF COUPLINGS
with POLYAMIDE SLEEVE
23
PRESENTATION
The GIFLEX range of flexible toothed couplings are com-
mercial couplings for general applications, which are howe-
ver manufactured to a high quality standard and offer tech-
nical and performance features that are typical of industrial
couplings. The specific application sector refers to power
transmissions for the flexible connection of rotating parts,
with the possibility of compensating radial and angular mi-
salignments and absorbing axial slippage.
The performance is in line with this class of couplings, ren-
dered more demanding and better suited to the needs of
industrial requirements by the design criteria adopted and
the precision with which the couplings are machined and
systematically tested.
CONSTRUCTION
In structural terms, the flexible toothed couplings consist of
two symmetrical steel hubs and a synthetic resin sleeve, whi-
ch ensures the coupling and power transmission between
the two hubs.
The two hubs are manufactured from low carbon content
steel and have been subjected to anti-corrosion surface tre-
atment and are each fitted with a toothed ring.
The hollow sleeve with internal toothing formed by injection
moulding comprises a high molecular weight semi-crystalli-
ne technical polymer, guaranteed by certification at origin,
thermally conditioned and charged with a solid lubricant
that contributes to enhance the self-lubricating features
typical of the polymer.
The toothing of the two hubs has a
progressive dual curvature, produced using a Numerically
Controlled machine tool, which ensures the coupling provi-
des optimum performance.
This solution enables dynamic
type angular and radial misalignments to be compensated
ALSO UNDER LOAD CONDITIONS. The specific geometry
of the tooth for a given transmitted twisting moment signifi-
cantly reduces the surface pressure, thereby increasing the
coupling’s capacity to transmit the load and fatigue resistan-
ce.
The polymer’s relative insensitivity to atmospheric humidity
and its capacity to withstand temperatures between –20°
and + 120° with brief peaks of up to +150° enable the cou-
pling to withstand demanding working conditions also in an
aggressive environment.
GF COUPLINGS with POLYAMIDE SLEEVE
CHARACTERISTICS
The couplings provide the following performance in practi-
cal applications:
- Reduced overall dimensions, weight and inertia
moment;
- Constant velocity behaviour at speed;
-
Silent operation and the ability to absorb impacts and
vibrations flexibly;
- Withstand the most common aggressive chemical
agents and moderate heat, max. temp. 80°;
- Self-lubricating, electrically insulated and
maintenance-free;
- Inexpensive, easily assembled and are suited to a variety
of applications, also in demanding conditions.
NORMAL HUB
LONG HUB
SLEEVE
TIPOLOGY of HUBS for SERIES
GF
12