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IFS System (Integrated-flange Shaft)
Flange is integrated on the shaft

For a quality wheel balancing, mechanical concepts are fundamental.
FASEP wheel balancers are built around the VQI System (a 3 sensor, quasi-ideal-constraints), a FASEP exclusive design, and with IFS system (integrated-flange-shaft) for maximum centering accuracy.

The usual solutions of coupling shaft and flanges (conical, cylindrical, planar, rectified or not) do not eliminate the problem of the coupling tolerances, but simply they reduce it, leaving that wear and dirt increase such tolerance day by day.

Conical coupling (Hofmann, Sicam)	Cylindrical coupling	Planar coupling (Cemb)
In all above cases, you can reduce tolerances due to couplings, but you cannot eliminate them! And time, wear, dirt will only make things worse!
IFS System (Integrated-Flange Shaft) No coupling at all. This is the only way to radically eliminate all tolerances and consequently to improve dramatically the centering accuracy!

With IFS system, where the bell flange is integrated of the shaft (1), tolerances of coupling shaft and flange are simply radically eliminated, improving dramatically the centering accuracy and therefore the result of balancing process.

IFS system, moreover, allows the lodging of the spring (2) for centering with inner cone (3). The spring always remains inside of the flange, does not have be found and mounted, but simply it is always to its place. Also, it is protected from the dirt, making easy the job of mounting any type of wheel.

1. Bell flange is integrated with the shaft. No parts are to be mounted. 2. Back-spring for inner cone use is always in place. no need to mount it. 3. Inner cone. Centering is absolutely easy and precise.

Fabio Boni
2/12/2003 and later updates
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