The support rollers that Distitec produces have the following technical characteristics:
Outer ring made of case-hardening steel 16MnCr5 and 16CrNi4 (UNI 7846) for the small support rollers and in 18NiCrMo5 and 20CrMnTi (UNI 7846) for the large ones. These steels, in addition to having excellent mechanical characteristics and the possibility of reaching high hardness, after treatment have good capacity to withstand shocks. They are in fact used for those bearings that work like rollers, that is with the outer rings free and not housed in special seats as in traditional applications where bearings belonging to the standard types are used.
The surface hardness they can reach is 60-2 HRc. The depth of the “hard” area varies from 0.8/1 mm and increases with the size of the bearing and therefore the loads to be supported.
Inner ring, washers and rollers made of 100Cr6 (UNI 3097) hardened steel, steel with the best characteristics of resistance to wear with a hardness of up to 60 + 2 HRc.
Pin made of C45 and 42CrMo4 (UNI 7845) steel with induction hardened roller (or ball) sliding tracks with a hardness of 60 + 2 HRc and a depth that increases with increasing size.
Protections in steel sheet subjected to antioxidant treatment and seals in steel sheet with antioxidant treatment and part in NBR nitrile rubber and on request in FKM material for high temperatures and for applications with the presence of aggressive chemicals.
Eccentric bushings made of C45 steel (UNI 7845).
On request, low nuts are supplied for the support rollers with pin. The accuracy class of this type is P0 according to DIN 620.