Deep groove ball bearings

Deep groove ball bearings are available in many designs and sizes. 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.  

Basic designation

 

External design

( Z, ZZ, RS, 2RS,N)

Cage

(without suffix, M,Y)

/

Accuracy; internal clearance

(without suffix, P6,  C2, C3, C4)

Lubrication(LT)

 

without suffix

 

stamped steel cage, ball centered; dimensional and running accuracy to normal class; normal internal clearance

Z

stamped sheet steel shield on one side

ZZ

stamped sheet steel shield on both sides

RS

NRB seal reinforced with a sheet steel insert on one side

2RS

NRB seal reinforced with a sheet steel insert on both sides

N

groove on the outer ring

M

machined brass cage, ball centered

Y

window type stamped separator made of sheet brass, ball centered

P6

dimensional and running accuracy to ISO tolerance class 6

С2

radial internal clearance smaller than normal

С3

radial internal clearance greater than normal

С4

radial internal clearance greater than C3

LT

low temperature grease

 

 

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