Bearing data

Deep groove ball bearingsCylindrical roller bearings
Dimension standardsBoundary dimensions: ISO 15


For additional information → Tolerances



P6 geometrical tolerance

Values: ISO 492 (table 1, table 2)

Internal clearance

For additional information → Bearing internal clearance


Check availability of other clearance classes

Values: ISO 5753-1 (table 3)Values: ISO 5753-1 (table 4)
Values are valid for unmounted bearings under zero measuring load.
Permissible misalignmentIdentical to standard bearings
→ Bearing data→ Bearing data

Permissible axial displacement (fig. 1)

smax → product table

NU design hybrid bearings can accommodate axial displacement. Displacement of the shaft relative to the housing occurs within these bearings. As a result, there is virtually no increase in friction.

Silicon nitride propertiesFor bearing grade silicon nitride (Si3N4), refer to Ceramics.

Electrical properties

  • Protection against AC and DC currents
  • High impedance, even for very high frequencies, providing good protection against high frequency current and voltage peaks
  • Voltage level before the first arcing occurs through the seal/bearing contact of small hybrid deep groove ball bearings (NBR contact seal): > 2,5 kV DC
SKF logo