NN series double-row cylindrical roller bearings are designed to carry heavy radial loads and provide accurate due to their line contact design.
These bearings are designed with a thin cross section and the inner and outer rings are separable.They are often found in main spindles for machine tools and other spindles applications where speed and accuracy are necessary.

Series		Bore diameter(mm)
NN3000	NN3000K	25~1000
NNU4900	NNU4900K	100~1000