Radial insert ball bearings
In the German-speaking world, radial insert ball bearings ("Spannlager") are single-row, ready-to-install modules made by FAG/INA.
These modules comprise a solid outer race, an inner race widened to one or both sides as well as ball cages made of polymer or steel plate and P, L, R or T seals.
Maximum running smoothness is achieved with radial insert ball bearings with the inner ring widened on both sides.
The surface shell of the outer race is made spherical or cylindrical. Radial insert ball bearings with a spherical surface shell combined with an INA housing matching the design compensate shaft misalignment to a great extent.
FAG/INA also offers eccentric clamping rings, adapter sleeves, driving slots or fits and threaded pins in the inner race as attachment methods.
FAG/INA supplies some series with eccentric clamping ring or threaded pins in the inner race in imperial sizes as well.
Increased standardisation means that the units supplied by the manufacturer FAG/INA hardly differ from those supplied by other manufacturers in terms of design, the materials used and functionality.
Radial insert ball bearings from FAG/INA are usually somewhat more expensive than Japanese units of the same quality.
FAG/INA uses deviating designations. (see ball bearing units)