NAF single-row spherical roller bearing has only one row of spherical rollers arranged between the inner and outer rings. NAF double-row spherical roller bearing, on the other hand, has two rows of spherical rollers arranged ymmetrically between the inner and outer rings. The double-row design offers higher load-carrying capacity and greater radial stiffness compared to the single-row design. Additionally, double-row bearings may provide better axial load-carrying capacity and reduced friction, making them better suited for applications that require high loads and increased stability. However, double-row bearings are generally more expensive than single-row bearings.
