NTN Spherical Roller Bearing Double Row 21322 / 21322K With P5 / P6 Precision

Spherical roller bearings have barrel-shaped rollers between the inner ring, which has two raceways, and the outer ring which has one spherical raceway. Since the center of curvature of the outer ring raceway surface coincides with the bearing axis, they are self-aligning in a manner similar to that of self-aligning ball bearings. Therefore, if there is deflection of the shaft or housing or misalignment of their axes, it is automatically corrected so excessive force is not applied to the bearings.
Spherical roller bearings can take, not only heavy radial loads, but also some axial loads in either direction. They have excellent radial load-carrying capacity and are suitable for use where there are heavy or impact loads.

Types of Spherical Roller Bearings :

C: Stamped steel retainer and strengthened symmetric rollers for considerably higher load ratings;

CA: one piece brass retainer and strengthened symmetric rollers;

exchange with C design, especially for large size.

MB: Two-piece precision-machined brass retainer and strengthened symmetric rollers;

equivalent to C design in load capacity.

CC: steel cage, replace traditionalbrass cage.

E: Third generation design to improve stress distribution for much longer service life

TN: Nylon retainer.

Quick Detail:

DWR Bearing Co., Ltd. was founded in 1998, after more than 10 years of development, nowadays has become into a group corporation with several subsidiaries. Our factory covers an area of 30, 000 square meters, construction area of 19, 000 squre meters, along with advanced production line and modern test management. At present, the quality of our bearings has reached advanced level in the international market. Our business philosophy is Quality First with Faith Base. We mainly produce Deep groove ball bearing, Self-aligning bearing, Taper roller bearing in Metric and Inch sizes, Cylindrical roller bearing, Pillow block bearing, Rolling mill bearing and Multi-row composite bearing. Our products are exported to Southeast Asia, Europe, the Americas, the Middle East etc. Our company with high-quality, reasonable price, good reputation won the high praise from customers at home and abroad. In 2002 we obtained ISO9001:2000 international quality system certification. Meanwhile, we have been absorbed in product quality and advanced technology aiming to provide excellently precise products all these years