Wet Filament Winding rings for starter motors and commutators are among our bestsellers.

As market leader, we produce millions of pieces per year to be delivered in JIT or E-Kanban to the most important global players all over the world, who acknowledge our premium quality.

The technique we use is comparable to that of Filament-Winding that was modified and enriched with other technologies to better suit technical needs and product cost. We designed the most strategic machineries and equipment. Our production and products are constantly checked by computerized systems that keep process parameters and traceability monitored.
Our service starts with initial customer contact that focuses on gaining an understanding of technical and business needs, along with environment and operating conditions where the product will be in use. “Our collaboration does not end with the installation of the ring, but continues through a team working together with the customer to explore all possible further optimizations.
Saver is experienced at coordinating the functional and business requirements to provide the product with specific quality documentation (PPAP, FMEA, etc.…) and we have our own technological laboratories for testing, inspecting and improving the product and its performance. Specialized equipment is used to test the product for mechanical and thermal stress. Data is then collected and analysed to form graphs, reports, FMEA, PPAP, etc.…
From every lot of delivered products we keep a sample for a certain number of years in to be able to do ex post verifications.
Saver uses SPC statistical techniques and computerized visual checks to determine and monitor the PPM parameters of our process, and relate causes and effects. For years we have been supplying our products with a quality warranty all over the world.

For high performance applications we can produce rings for a lighter, more compact, faster, reliable new generation of armatures that requires high resistance to centrifugal force and high temperatures: BK Ring.

Millions of armatures already mount this higher performing quality.

Rings for starter motors:

Rings for starter motors are used in the automotive industry: lighter components are used to produce lighter cars with lower consumption at a lower price.

Starters’ designers are developing new generations of starting motors much lighter and with improved performances compared to the past.
They reduce the volume and the quantity of material, increasing considerably the spin velocity and applying a reduction gear to increase the torque. These motors required a choice of materials with higher performances to resist greater mechanical stress and thermal shock.
The last generation of “start and stop” cars reducing pollution emissions has even more increased the necessity to have rings with higher and higher performances, both mechanical and thermal in automatic armaturing.
Several million cars are equipped with Saver products all over the world.

Rings for commutators:

Rings in insulating composite material have replaced the steel rings inside bar commutators.

In conjunction with the elimination of asbestos fibres in molding thermosets, a large number of collectors had to be redesigned.
In some specific applications, the commutator system (commutator+brush+brush holder) produced by electric motors producers requires higher and higher performances.

Because of this commutator producers keep researching new technologies that satisfy their customers’ requests.
The composite rings are essential to improve performances, allowing an easier automation.
Glass fibres, impregnated with resins for high temperatures and with the correct orientation, guarantee a resistance to radial tensile stress higher than steel.
Moreover, being insulating, they do not cause any short circuits when assembled against the bars.
Commutator designers could have higher speed performance and higher precision. Several million commutators are equipped with Saver products.