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Tolerances for Tapered Bores (Class: Normal) 1
| d : |
Nominal Bore Diameter |
| d 1 : |
Bore Tapered End Larger of Diameter
Taper 1:12 d 1 = d + 1/12 B
Taper 1:30 d 1 = d + 1/30 B |
| Δd mp : |
Single Plane Mean Bore Diameter Deviation in Theoretical Diameter of Smaller End of Bore |
| Δd 1mp : |
Single Plane Mean Bore Diameter Deviation in Theoretical Diameter of Larger End of Bore |
| V dp : |
Outside diameter variation in a single radial plane |
| B : |
Nominal Inner Ring Width |
 |
Half of Taper Angle of Tapered Bore |
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Taper 1:12
=2 °3'9.4"
=2.385 94 °
=0.041 643 rad |
Taper 1:30
=57'17.4"
=0.95484°
=0.016665 rad |
| Tapered Bore, Taper 1:12 - Units : |
d
(mm) |
Δd mp |
Δd 1mp - Δ d mp |
V dp (1)(2) |
over |
incl |
high |
low |
high |
low |
max |
18 |
30 |
+33 |
0 |
+21 |
0 |
13 |
30 |
50 |
+39 |
0 |
+25 |
0 |
16 |
50 |
80 |
+46 |
0 |
+30 |
0 |
19 |
80 |
120 |
+54 |
0 |
+35 |
0 |
22 |
120 |
180 |
+63 |
0 |
+40 |
0 |
40 |
180 |
250 |
+72 |
0 |
+46 |
0 |
46 |
250 |
315 |
+81 |
0 |
+52 |
0 |
52 |
315 |
400 |
+89 |
0 |
+57 |
0 |
57 |
400 |
500 |
+97 |
0 |
+63 |
0 |
63 |
500 |
630 |
+110 |
0 |
+70 |
0 |
70 |
630 |
800 |
+125 |
0 |
+80 |
0 |
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800 |
1 000 |
+140 |
0 |
+90 |
0 |
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1 000 |
1 250 |
+165 |
0 |
+105 |
0 |
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1 250 |
1 600 |
+195 |
0 |
+125 |
0 |
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Notes:
(1)Applicable to all radial planes of tapered bores.
(2)Not applicable to diameter series7 and 8.
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