Single-row deep groove ball bearings are the most common type of rolling bearing. The raceway grooves in the inner and outer rings form a circular arc with a radius slightly larger than that of the balls. In addition to open varieties, these bearings may have steel shields or come pre-lubricated with grease maintained by rubber seals installed on one or both sides. Snap rings are sometimes used on the outside diameter of the outer ring. Cages are generally made of pressed steel, though large bearings and bearings designed for high-speeds may use machined brass cages.

Bearing for radial loadchart

Besides radial loads, DGBBs can take axial loads in both directions and offer low frictional torque and high-speed components ideal for applications requiring low noise and vibration.

Heavy dutybearing for radial load

Filling slots in the inner and outer rings allow maximum ball bearings to contain a larger number of balls than normal deep groove ball bearings; however, the slots make them unsuitable for applications with high axial loads. BL2 and BL3 types have boundary dimensions equal to those of Series 62 and 63 single-row deep groove ball bearings respectively. ZZ-type shielded bearings are available in addition to open bearings. When using these bearings, the filling slot in the outer ring should be positioned outside of the loaded zone as much as possible. Maximum ball bearings feature pressed steel cages.

Bestbearing for radial load

The inner ring groove of magneto bearings is slightly shallower than that of deep groove bearings and the outer ring bore diameter on the side without a shoulder is cylindrical from the bottom. The outer ring may be separated, allowing easier mounting. In general, two of these bearings are used together in a paired mounting (sometimes called “duplex pairs”). Magneto bearings are small bearings with a bore diameter of 4 to 20 mm. Pressed brass cages are standard, though machined synthetic resin cages can be used for high-speed rotation.

Ballbearing for radial load

Small, miniature, and instrument precision bearings broadly come in deep groove and angular contact varieties. Deep-groove types may have a flanged outer ring, special inner ring width, thin-walled cross-sections, or a special shape for synchros. These bearings can come open, sealed, or shielded.

NSK manufactures a full range of deep groove ball bearings (DGBBs). These versatile bearings are the most common type and serve a wide variety of industries.