Back-up roller bearings NNTR5012548-2Z for steel plant-NEWS-www.fv-bearing.com
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Back-up roller bearings NNTR5012548-2Z for steel plant

Apr 14, 2022

NNTR -2Z

BEARING MODELMassBasic sizeLubricating hole
DdBCrr1d3Qty
kg



min.min.

NNTR50X130X65-2ZL5.21305065633233
NNTR55X140X70-2ZL6.41405570683243
NNTR60X150X75-2ZL7.81506075733243
NNTR65X160X75-2ZL8.81606575733253
NNTR70X180X85-2ZL131807085833253
NNTR80X200X90-2ZL16.82008090884253
NNTR90X220X100-2ZL22.5220901009842.553
NNTR100X240X105-2ZL2824010010510342.566
NNTR110X260X115-2ZL35.626011011511342.566
NNTR120X290X135-2ZL52.82901201351334386
NNTR130X310X146-2ZL65.23101301461445386



Back-up roller bearings without pivot have the following technical characteristics:


The inner rings and the outer rings are manufactured in GCr15 (100Cr6) core hardened steel, with hardness 60±2 HRG. 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 PO; special execution according class P5 (DIN 620) can be manufactured on request.

On request, they can be manufactured in stainless steel.


 


 



NNTR LIST -2Z




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