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cylindrical roller bearings

cylindrical roller bearings
Author :Admin | Publish Date:2012-10-15 17:50:28
SKF produces cylindrical roller bearings in many designs, dimension series and sizes. The majority are single row bearings with a cage. Single and double row full complement bearings (without cage) complete the SKF standard assortment for general engineering. Bearings with a cage can accommodate heavy radial loads and operate at high speeds. Full complement bearings are suitable for very heavy radial loads at moderate speeds.


SKF produces high-precision single row and double row cylindrical roller bearings in three different designs and series. The characteristic features of these bearings are a low cross sectional height, high load carrying capacity, high rigidity and high-speed capability. They are therefore particularly well suited for machine tool spindles where the bearing arrangement must accommodate heavy radial loads and high speeds, while providing a high degree of stiffness.


The rollers of SKF  bearings are a key component. Their geometry, the so-called logarithmic profile, provides an optimum stress distribution in the contact zones in the bearing. Their surface finish maximizes lubricant film formation and optimizes rolling motion of the rollers. The benefits derived from this compared with traditional designs include enhanced operational reliability and a greater insensitivity to misalignment.


The SKF range of cylindrical roller bearings comprises the basic types

– single row cylindrical roller bearings, caged, mainly of the NU, NJ, NUP and N designs 
– double row cylindrical roller bearings, caged, mainly of the NNU and NN designs 
– multi-row cylindrical roller bearings, caged 
– single row full complement cylindrical roller bearings, mainly of the NCF and NJG designs 
– double row full complement nachi bearings, mainly of the NNF design 
– multi-row full complement cylindrical roller bearings, with four or eight rows of rollers . 


In addition to the standard assortment the comprehensive SKF range of cylindrical roller bearings consists of

– single row high-precision all-steel or hybrid cylindrical roller bearings 
– double row high-precision all-steel or hybrid cylindrical roller bearings 
– cylindrical roller bearings and bearing units for railway axleboxes 
– single row cylindrical roller bearings for traction motors for railway applications 
– backing iko bearings for cold rolling mills of the cluster type
– indexing roller units for continuous furnaces 


P213 diameter 2 1/2 "
SNH-517
4 hole flange bearing F215 diameter 75mm

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