Bearings • Roller Bearings
Roller bearings is a type of rolling element bearing. They use cylinders that are greater in length than the diameter. Relative to ball bearings, roller bearings have higher radial load capacity. They have low axial load capacity and higher friction. Also in comparison to ball bearings, the bearing capacity of roller bearings can decrease at a faster rate if the inner and outer races are not aligned properly. Common types of roller bearings include cylindrical, spherical, tapered, and needle. They are ideal for heavy-duty and moderate-speed functions. But cylindrical bearings have lower speed capabilities.
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NSK are manufacturers that produce a full range of roller bearings. Types include needle, spherical, cylindrical, thrust and tapered. NSK cylindical types have a high radial load capacity at high speeds, and come in single row and double row configurations. Their needle roller bearings are either radial or thrust, whose rollers slightly exceed the size range of needle rollers as stipulated by ISO. They include application-specific cam followers, and roller followers. NSK thrust roller bearings are available with cylindrical or spherical rollers, are suitable for heavy loads and have high axial rigidity with self aligning capability. The E type offers a pressed cage. Spherical types come in EA, C, CD or CA type, and are designed for high load capacity. Some come with a steel cage. Type EA has especially high load capacity and a high strength cage.