Precision of taper roller bearings

Unit:um

1) Inner rings

Bore ∆dmp Vdp Vdmp Kia ∆Bs
d mm P0,P6X P6 P0,P6X P6 P0,P6X P6 P0,P6X P6 P0 P6X P6
over to over to over to Max. Max. Max. over to over to over to
10 18 0-12 0-7 12 7 9 5 15 7 0-120 0-50 0-120
18 30 0-12 0-8 12 8 9 6 18 8 0-120 0-50 0-120
30 50 0-12 0-10 12 10 9 8 20 10 0-120 0-50 0-120
50 80 0-15 0-12 15 12 11 9 25 10 0-150 0-50 0-150
80 120 0-20 0-15 20 15 15 11 30 13 0-200 0-50 0-200
120 180 0-25 0-18 25 18 19 14 35 18 0-250 0-50 0-250
180 250 0-30 0-22 30 22 23 16 50 20 0-300 0-50 0-300

2)Outer rings

D ∆Dmp VDp VDmp Kea ∆Cs
mm P0,P6X P6 P0,P6X P6 P0,P6X P6 P0,P6X P6 P6X P0,P6
over to over to over to Max. Max. Max. over to over to
18 30 0-12 0-8 12 8 9 6 18 9 0-100 same as ∆Bs of same d
30 50 0-14 0- 9 14 9 11 7 20 10 0-100
50 80 0-16 0-11 16 11 12 8 25 13 0-100
80 120 0-18 0-13 18 13 14 10 35 18 0-100
120 150 0-20 0-15 20 15 15 11 40 20 0-100
150 180 0-25 0-18 25 18 19 14 45 23 0-100
180 250 0-30 0-20 30 20 23 15 50 25 0-100