Page 451 - Rollingbearings
P. 451
Designation system
Designation system
Group 1 Group 2 Group 3 / Group 4
4 1 4 2 4 3 4 4 4 5 4 6
Preixes
Basic designation
Listed in table 4, page 30 4
Sufixes
Group 1: Internal design
E Optimized internal design for increased load carrying capacity
Group 2: External design (seals, snap ring groove, etc.)
-2RS1 Contact seal, NBR, on both sides
K Tapered bore, taper 1:12
Group 3: Cage design
M Machined brass cage, ball centred
TN9 Glass ibre reinforced PA66 cage, ball centred
Group 4.1: Materials, heat treatment
Group 4.2: Accuracy, clearance, preload, quiet running
C2 Radial internal clearance smaller than Normal
C3 Radial internal clearance greater than Normal
Group 4.3: Bearing sets, matched bearings
Group 4.4: Stabilization
Group 4.5: Lubrication
W64 Solid Oil
Group 4.6: Other variants
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