Cylindrical roller bearings

Cylindrical roller bearings are available in many designs. Basic bearing designations are indicated in the catalogue datasheets and are in accordance with international ISO system and/or GOST standard . The system listed below with prefixes and suffixes is applied to differentiate design variants. You can get in touch with our services to clarify a bearing design availability, to get additional bearing technical data, which is not listed in the catalogue as well as to discuss with our technical experts your specific requirements for a bearing design.  

DESIGNS DESIGNATION        

N design

two ribs on the inner ring and the ribless outer ring

NU design

two ribs on the outer ring and the ribless inner ring

NF design

two ribs on the inner ring and one rib on the outer ring

NJ design

two ribs on the outer ring and one rib on the inner ring

NUP design

with two integral ribs on the outer ring and one integral rib and one loose rib on the inner ring

 

SUFFIXES DESIGNATION

Basic designation

 

Cage

(without suffix, J, MA, MB, ML, P)

/

Accuracy;

internal clearance

(without suffix, C2, C3, C4)

 

without suffix

 

riveted machined brass cage, roller centered; dimensional and running accuracy to normal class; normal radial internal clearance

J

stamped steel cage, roller centered

riveted machined brass cage, outer ring centered

MB

riveted machined brass cage, inner ring centered

ML

window-type machined brass cage, inner or outer ring centered

P

glass fiber reinforced cage, roller centered

С2

radial internal clearance smaller than normal

С3

radial internal clearance greater than normal

С4

radial internal clearance greater than C3

P6

dimensional and running accuracy to ISO tolerance class 6

 

 

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