Triple row roller bearing, internal toothed ZR3.40.3550.400-1SPPN ISB (Standard Series)

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Description

SB slewing bearings in the ZR3 standard series are comprised of three rows of crossed roller bearings, two of which accommodate axial loads
and the other radial loads, separated by a spacer in Nylon, with inner gear teeth.
The triple row construction is comprised of three forged rings, one of which with inner gear teeth and two which form the untoothed outer ring,
bound together with screws.
The load applied to this type of bearing is distributed across the three rows of rollers in the same way and in the directions in which it is applied,
without angular decomposition. This allows the triple roller row structure to withstand very heavy loads with high tilting moments.

ISB slewing bearings in the ZR3 standard series are the only solution when the static load or fatigue cycle values of the bearing are too high for all other types of slewing bearings.

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