NTN deep groove ball bearings—NTN deep groove ball bearings are very widely used. A deep groove is formed on each inner and outer ring of the bearing enabling them to sustain radial and axial loads in either direction as well as well as the complex loads which result from the combination of these forces. NTN deep groove ball bearings are suitable for high speed applications.

In addition to unsealed bearings, NTN deep groove ball bearings include ball bearings with greased sealed inside (sealed or shielded) and bearings with a snap ring that simplify structure around the bearing and design.

Sealed ball bearings
Like shielded bearings, sealed ball bearings have the same boundary dimensions as those of the open type bearings. Sealed ball bearings also have the function of keeping foreign matter out and grease in with a seal.

Shielded ball bearings
Shielded ball bearings are NTN deep groove ball bearings having the same boundary dimensions as those of open type bearings. Protection against the penetration of foreign material and the prevention of grease leakage are provided by the steel shield plates of these bearings.

Cartridge type single row deep groove ball bearings
Cartridge type bearings have the same standard bore and O.D. as NTN deep groove ball bearing, but are as wide as double row ball bearings. They are supplied with two seals and contain a large grease capacity found useful in extremely dirty and dusty conditions.

Maximum capacity type ball bearings
The boundary dimensions of the maximum capacity type ball bearings are the same as those of series 62 and 63 of NTN deep groove ball bearings. In order to assemble the steel balls, filling slots are provided on both inner and outer ring of the bearings. Accordingly, more steel balls are assembled in these bearings than those of series 62 and 63 of deep groove ball bearings or the standard type. Therefore, the dynamic load rating of these bearings becomes 20% to 35% larger than that of standard type.