Precision of conic bore radial bearings

Unit:um

Bore ∆dmp ∆d1mp-∆dmp Vdp
d mm P0 P0 P0
overto over to over to max.
- 10 + 15 0 + 15 0 10
10 18 + 18 0 + 18 0 10
18 30 + 21 0 + 21 0 13
30 50 + 25 0 + 25 0 15
50 80 +30 0 + 30 0 19
80 120 + 35 0 + 35 0 25
120 180 + 40 0 + 40 0 31
180 250 + 46 0 + 46 0 38

Remarks:

1.The above tolerance is suitable for conic bore inner rings with taper being 1:12

2.a: 1/2 of metric taper of the conic bore

a=2กใ23'9.4"

=2.385 94กใ

=0.041 643 rad