Page 190 - domce

9 INTERNAL SELF-ALIGNING BALL & ROLLER BEARING UNITS

2. Tolerances

Chamfer dimensions do not
Chamfer Dimension Variations control the shape of bearing
corners, but the profile shall
fall within the shaded area
shown in the figure.

r Min.
r Max.
r Min.

r Min.
r Max.

Table 7. Tolerance for Tapered Bore
U T I N 1 0 0 . 0 m m
B O R E A I D M E T E R
N O N I M A L B O R E d ( d 1 - ) d
A I D M E T E R D E A I V O I T N S V A A I R O I T N S
d m m
T A P E R 2 1 : 1 T A P E R 0 3 : 1 T A P E R 2 1 : 1 T A P E R 0 3 : 1
O V E . R N I C . L G I H H L O W G I H H L O W G I H H L O W G I H H L O W
0 3 0 5 9 3 + 0 – – 5 2 + 0 – –
0 5 0 8 6 4 + 0 – – 0 3 + 0 – –
0 8 0 2 1 4 5 + 0 2 2 + 0 5 3 + 0 5 1 + 0
0 2 1 0 8 1 3 6 + 0 5 2 + 0 0 4 + 0 8 1 + 0
0 8 1 0 5 2 2 7 + 0 9 2 + 0 6 4 + 0 0 2 + 0
0 5 2 5 1 3 1 8 + 0 2 3 + 0 2 5 + 0 3 2 + 0
5 1 3 0 0 4 9 8 + 0 6 3 + 0 7 5 + 0 5 2 + 0
0 0 4 0 0 5 7 9 + 0 0 4 + 0 3 6 + 0 7 2 + 0
0 0 5 0 3 6 0 1 1 + 0 – – 0 7 + 0 – –
0 3 6 0 0 8 5 2 1 + 0 – – 0 8 + 0 – –
0 0 8 0 0 0 1 0 4 1 + 0 – – 0 9 + 0 – –
NOTE: The values for taper 1/12 given for bearings larger than 500mm nominal bore and for 1/30 are
according to CBC standards.

(Nominal dia. of d1) + ∆d1
Nominal dia. of d1
.
1
¿ ( /12 Taper) : 2û23Õ9 4
¿ ( /30 Taper) : 57Õ17Ó
1
¿
B
B

Nominal dia. of d
d
Nominal dimensions (Nominal dia. of d) + ∆d
Variations from nominal dimensions

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