CFMR-NC Tečaji z vzmetnim povratkom Automatic return on closing

Kot vrtenja (približna vrednost)

Max 270° (-90° and +180° being 0° the condition where the two interconnected surfaces are on the same plane).

The hinge can reach -90 ° but this condition must not be used for CFMR-NO execution.

Do not exceed the rotation limit angle so as not to prejudice the correct operation of the return spring.

Funkcije in zmogljivosti

CFMR hinge is used for the automatic re-closing or re-opening of the door by the return spring.

Navor se postopoma spreminja s kotom odpiranja/zapiranja tečaja.

In specific fatigue stress tests, the return spring exceeded 25.000 cycles (CFMR.35) and 100.000 cycles (CFMR.67) while maintaining the same unaltered torque values.

 

Testi upornosti	AKSIALNA OBREMENITEV	RADIALNA OBREMENITEV	OBREMENITEV POD KOTOM 90°
Opis	Največja omejitev statične obremenitve Sa [N]	Največja omejitev statične obremenitve Sr [N]	Največja omejitev statične obremenitve S90 [N]
CFMR.35	390	600	600
CFMR.67	2100	3500	1900

Največja statična obremenitev je vrednost, nad katero se lahko material zlomi in s tem ogrozi delovanje tečaja. Seveda je treba za to vrednost uporabiti ustrezen faktor glede na pomembnost in stopnjo varnosti določene uporabe.

Vodič za izbiro

The return force of a door that has a certain weight W (Kg) depends on the spring force of the hinge [Nm] and of the friction between the sliding surfaces between the fixed part and the movable part of the hinge which in turn depend on the tribological properties of the technopolymer used.

The table provides a rough guide for choosing the hinge and its positioning for a specific application.

These values are the result of tests carried out in a laboratory under controlled temperature and humidity (23°C-50% R.H.), under determined conditions of use and for a limited period of time.

Priporočljivo je, da vedno preverite pravilno delovanje za predvideno uporabo.

For further general technical information, consult the Smernice.

 

Pmax= maximum weight of the door that the hinge is able to close with a small residual holding torque tested at a minimum opening angle of 45°.

OPOMBA: this weight depends not only on the geometry of the door (in particular on its centre of gravity) but also on the perfect coaxiality of the hinges.