It is known to all that NSK bearing tolerances for the boundary dimensions and running accuracy of rolling bearings are specified by ISO 492/199/582 .
As to bearing accuracy classes, besides ISO normal accuracy, there are Class 6X (fo rtapered roller bearings), Class 6, Class 5, Class 4, and Class 2, with Class 2 being the highest in ISO. The applicable NSK bearing tolerances classes and equivalents fo r each bearing type are shown in this section.
Bearing Types Applicable Tolerance Classes
Deep Groove Ball Bearings No rmal Class 6 Class 5 Class 4 Class 2
Angular Contact Ball Bearings No rmal Class 6 Class 5 Class 4 Class 2
Self-aligning Ball Bearings No rmal Class 6 Class 5 – –
equivalent equivalent
Cylindrical Roller Bearings No rmal Class 6 Class 5 Class 4 Class 2
Slolid Type Needle Roller Bearings No rmal Class 6 Class 5 Class 4 –
Spherical Roller Bearings No rmal Class 6 Class 5 – –
equivalent equivalent
Metric-design Tapered Roller Bearings No rmal – Class 5 Class 4 –
Class 6X
Inch-design Tapered Roller Bearings ABMA ABMA ABMA ABMA ABMA
CLASS 4 CLASS 2 CLASS 3 CLASS 0 CLASS 00
Thrust Ball Bearings No rmal Class 6 Class 5 Class 4 –
Spherical Thrust Roller Bearings No rmal – – – –
You should choose the right NSK bearing tolerances according to your applications.
Below are some of NSK products most saleable in the international market:
50 72 12 7910C 101 pcs in stock
50 72 12 7010A 21 pcs in stock
50 80 16 7010C34pcs in stock
50 80 16 7210A 22 pcs in stock
50 90 20 7210B 61 pcs in stock
50 90 20 7210C 25 pcs in stock
50 90 20 7310A 34 pcs in stock
50 110 27 7310B 19 pcs in stock
55 80 13 7911C 36 pcs in stock
55 80 13 7011A 21 pcs in stock
55 90 18 7011B 18 pcs in stock
55 90 18 7011C 51 pcs in stock
55 100 21 7211A 55pcs in stock
55 100 21 7211B 14 pcs in stock
55 100 21 7211C 23pcs in stock
55 120 29 7311A 34pcs in stock
55 120 29 7311B 84pcs in stock
60 85 13 7912C 61pcs in stock
60 95 18 7012A 19 pcs in stock
60 95 18 7012C 24pcs in stock
60 110 22 7212A 9 pcs in stock
60 110 22 7212B 22 pcs in stock
60 110 22 7212C 51 pcs in stock
60 130 31 7312A 31 pcs in stock
60 130 31 7312B 8 pcs in stock
For more informations about NSK bearing tolerances, please contact us by mail or call. We welcome customers all over the world to send inquiry to us and we will give you the best price!
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