The self-aligning needle roller bearing with inner ring or without inner ring is a complete unit composed of a stamped outer sleeve, a spherical outer surface, a needle roller and holder assembly, and a separable inner ring. Bearings with inner rings must not exceed the displacement 's'. The inner ring should be ordered separately. The bearing must be fitted into the bearing housing hole by press fit.

Design and Safety Guidelines For bearings without an inner ring, the shaft should be designed to be used as a raceway. When correcting the angular deviation, a starting torque is generated. The width has a tolerance of ±0.5mm. If a larger 's' value is requested, a wider inner ring should be used. The diameter of the inscribed circle is a limit inscribed circle formed by a group of needle rollers arranged on the outer raceway without clearance. Spherical needle roller bearings without inner ring are set to use hardened and ground shafts as raceways.

Spherical needle roller bearings with inner rings are used in applications where the shaft cannot be used as a rolling bearing raceway. The size of the inscribed circle diameter Fw is the determining factor for the radial internal clearance of a bearing without an inner ring. Except for the width and outer diameter of the jacket, other geometric and dimensional tolerances are affirmed in accordance with the tolerance Clutch Release Bearings manufacturers level PN of the DIN620 rule.

To give full play to the function of the bearing, it is necessary to abide by the bearing housing hole tolerance given in Table 1. The diameter Fw of the inscribed circle before the device is within the tolerance zone F6. The shaft tilt up to 3° is easy to install-the bearing can be pressed into the bearing housing hole-without any further axial positioning