Precision of conic bore radial bearings                                                                         Unit:um　

Bore	△dmp	△d1mp-△dmp	Vdp
d mm	P0	P0	P0
over      to	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=2°23'9.4"
   =2.385 94°
   =0.041 643 rad