Page 407 - Rollingbearings
P. 407
Designation system
Group 4
4 1 4 2 4 3 4 4 4 5 4 6
Group 4.6: Other variants 3
309829 Larger balls
Group 4.5: Lubrication
GE2, Grease sufixes (table 2, page 389)
GWF,
MT33,
VT113,
WT
Group 4.4: Stabilization
S1 Bearing rings heat stabilized for operating temperatures ≤ 200 °C (390 °F)
Group 4.3: Bearing sets, matched bearings
DB Two bearings matched for mounting back-to-back
DF Two bearings matched for mounting face-to-face
DT Two bearings matched for mounting in tandem
Group 4.2: Accuracy, clearance, preload, quiet running
P5 Dimensional and geometrical tolerances to class P5
P6 Dimensional and geometrical tolerances to class P6
P62 P6 + C2
P63 P6 + C3
P64 P6 + C4
P6CNL P6 + CNL
CNL Axial internal clearance in the lower half of the Normal range
C2 Axial internal clearance smaller than Normal
C2H Axial internal clearance in the upper half of the C2 range
C2L Axial internal clearance in the lower half of the C2 range
C3 Axial internal clearance greater than Normal
C4 Axial internal clearance greater than C3
344524 C2H + CNL
Group 4.1: Materials, heat treatment
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