deep groove ball bearing suffix

  Suffixes - Internal design 

A, AA, C, D Deviating or modified internal design 

E Reinforced ball set 

  Suffixes - External design (seals, snap ring groove, etc.) 

N Snap ring groove in the outer ring 

NR Snap ring groove in the outer ring, with snap ring 

N1 One locating slot (notch) in one outer ring side face 

R 

 Flanged outer ring 

-RS1, -2RS1 Contact seal, NBR, on one or both sides 

-RS2, -2RS2 Contact seal, FKM, on one or both sides 

-RSH, -2RSH Contact seal, NBR, on one or both sides 

-RSH2, -2RSH2 Contact seal, FKM, on one or both sides 

-RSL, -2RSL Low-friction seal, NBR, on one or both sides 

-RST, -2RST 

 Low-friction seal, NBR, on one or both sides 

-RZ, -2RZ Non-contact seal, NBR, on one or both sides 

-Z, -2Z Shield on one or both sides 

-ZNBR Shield on one side, snap ring groove in the outer ring, with snap ring on the same side as the shield 

-ZNR Shield on one side, snap ring groove in the outer ring, with snap ring on the opposite side of the shield 

-2ZNR Shield on both sides, snap ring groove in the outer ring, with snap ring 

-2ZS 

 Shield on both sides, held in place by a retaining ring 

X 

 Boundary dimensions not in accordance with ISO dimension series 

  Suffixes - Cage design 

– For stainless steel bearings: stamped stainless steel cage, ball centred

For other bearings: stamped steel cage, ball centred 

 M Machined brass cage, ball centred; different designs or material grades are identified by a number following the M, e.g. M2 

MA(S) Machined brass cage, outer ring centred. The 'S' indicates a lubrication groove in the guiding surface. 

MB(S) Machined brass cage, inner ring centred. The 'S' indicates a lubrication groove in the guiding surface. 

TN PA66 cage, ball centred 

TN9 Glass fibre reinforced PA66 cage, ball centred 

TN9/VG1561 Glass fibre reinforced PA46 cage, ball centred 

TNH Glass fibre reinforced PEEK cage, ball centred 

  Suffixes - Materials, heat treatment 

HA1 Case-hardened inner and outer rings 

  Suffixes - Accuracy, clea