Design of FAG spindle bearing arrangements

FAG bearing combination and arrangement:

FAG four spindle bearings in a tandem-O-tandem arrangement and a double row cylindrical roller bearing.

1, Spindle bearing B7014-E-T-P4S-UL
2, Cylindrical roller bearing NN3011-AS-KM-SP

FAG one double direction axial angular contact bearing and two FAG double row cylindrical roller bearings

1, Cylindrical roller bearing NN3014-AS-K-M-SP
2, Double direction axial angular contact ball bearing 234414-M-SP
3, Cylindrical roller bearing NN3011-AS-K-M-SP

FAG two axial bearings and two double row cylindrical roller bearings

1, Cylindrical roller bearing NN3014-AS-K-M-SP
2, Axial bearing BAX70-F-T-P4S-DBL
3, Cylindrical roller bearing NN3011-AS-K-M-SP

Axial and radial rigidity

The FAG bearing arrangement in machine tools is subjected to frequently changing requirements. In order to achieve the highest possible machining accuracy, the aim must be to achieve high basic rigidity values.

Increased radial rigidity

When FAG cylindrical roller bearings NN30 are used, this gives the arrangement with an axial angular contact ball bearing 2344 and the arrangement with axial bearings BAX a rigidity that is approx. 2,5 times higher than in the case of FAG four spindle bearings B70 of the same size.

1, Rigidity
2, Axial
3, Radial

Consistent axial rigidity

The axial rigidity with axial bearings BAX is at the level of the bearing arrangement variants with the FAG spindle bearings.

The advantage when using the double direction axial angular contact ball bearings is 60%.