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Misalignment

Desalignment

Bearings running misaligned are subjected to additional forces resulting in reduced bearing life and also may generate high running noise, vibrations and excessive operating temperatures.

NBI single row cylindrical roller bearings feature optimized internal contact geometry to minimize the negative effect of edge loading stresses between the rollers and the contacting races.

This optimized internal contact geometry includes rollers having a modified outer profile including an optimized i.e. so crowned raceway geometry.

For normal operating conditions, the maximum misalignment between inner and outer ring must not exceed 2 angular minutes.

In cases where higher misalignments may occur, NBI also supplies cylindrical roller bearings with special profile on the inner ring raceway to customer orders (suffix PE).

 

Tolerances

 

NBI single row cylindrical roller bearings are produced to tolerance class PN as standard

NBI bearings are also produced to closer tolerances to customers order.

 

 

Cages

 

NBI E Type cylindrical roller bearings are normally fitted with glass fiber reinforced polyamide cages (suffix -TVP2) as standard. Bigger sizes are mainly fitted with a two-piece machine brass cage with integral rivets (suffixes -M1 as standard or -M2 as optional).

Non-E design NBI single row cylindrical roller bearings are normally fitted with pressed steel cages as standard (suffix-J).

Exceptions are larger cylindrical roller bearings and bearings of the series 10 and 4 which are produced with machined solid brass cages with steel rivets (suffix -M) as standard.

NBI cylindrical roller bearings are also available with other cage designs and cage materials on order request.

 

 

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NBI Catalogue


If you are interested in any of our products or require more information about them, please contact our Customer Service Department and ask for our catalogues.

 


 

 

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NBI Bearings Europe, S.A.
Pol. Industrial Basauri, Nave 6-10. 01409, Oquendo. Álava. SPAIN.
Tel Comercial/Sales phone: (+34) 945 898 395 Tel. Admón./Admin. phone: (+34) 945 898 397
Fax: (+34) 945 898 396