Page 260 - Rollingbearings

Designation system

1 Deep groove ball bearings

1
Designation system

Group 1 Group 2 Group 3 /

Preixes
ICOS- Oil sealed bearing unit
D/W Stainless steel, inch dimensions
W Stainless steel, metric dimensions
WBB1 Stainless steel, metric dimensions, not in accordance
with ISO dimension series

Basic designation

Listed in table 4, page 30
2.. Single row bearing with illing slots in the 02 dimension series
3.. Single row bearing with illing slots in the 03 dimension series
EE, EEB, R, RLS, RMS Inch bearing
Bearing size for inch bearings
2 (/8) 1/4 in (6,35 mm) bore diameter
to
40 (/8) 5 in (127 mm) bore diameter

Sufixes

Group 1: Internal design
A, AA, C, D Deviating or modiied internal design
E Reinforced ball set

Group 2: 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 Low­friction seal, NBR, on one or both sides
-RST, -2RST Low­friction seal, NBR, on one or both sides
-RZ, -2RZ Non­contact 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

Group 3: Cage design
– 1 For stainless steel bearings: stamped stainless steel cage, ball centred
2 For other bearings: stamped steel cage, ball centred
M Machined brass cage, ball centred; different designs or material grades are identiied 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 ibre reinforced PA66 cage, ball centred
TN9/VG1561 Glass ibre reinforced PA46 cage, ball centred
TNH Glass ibre reinforced PEEK cage, ball centred

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