C.R. Cuscinetti A Rulli S.R.L. - Bearings

Back-up rollers without pivot

Back-up rollers without pivot

Technical Characteristics - Back-up rollers without pivot

The series of back-up rollers without pivot is manufactured with two or more full-complement-cylindrical-roller rows; they are separated by spacers obtained entirely on the outer ring.

These bearings are particularly used on machines that work continuously and in extremely tough conditions, because of their high dynamic and static load capacity.

The spacers between the rolling raceways guarantee the bearing of the axial thrusts.

Back-up rollers without pivot have the following technical characteristics:

• The inner rings and the outer rings are manufactured in UNI 100Cr6 core hardened steel, with hardness 60±2 HRC. The outer ring has a cambered radius on the outer diameter; this allows to improve the distribution of the loads during functioning.
• Back-up rollers with surface hardness of the outer ring reduced to 53÷58 HRC can be supplied on request.
• Inner ring with holes and grooves for the inflow of the lubricant.
• Full-complement of cylindrical rollers to ensure the highest possible load capacity.
• Double system of protection and tightness, through shields and sealing spring rings made of steel. The sealing system can be also with lip shearing rubber seals.
• The tolerances during execution are according normal class P0; special execution according class P5 (DIN 620) can be manufactured on request .
• On request, they can be manufactured in stainless steel.