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Needle Bearings Features
May 23, 2017

   Needle Bearings Needle bearing (needle bearing) is a cylindrical roller with a roller bearing, relative to its diameter, the roller is thin and long. This roller is called a needle roller. Although the bearing has a small cross-section, the bearing still has a high load bearing capacity, the needle roller bearing with a thin and long roller (roller diameter D ≤ 5mm, L / D ≥ 2.5, L for the roller length), so Compact radial structure, its inner diameter and load capacity and other types of bearings the same, the smallest diameter, especially for radial installation of the size of the limited support structure.

According to the use of different occasions, can be used without the inner ring bearing or needle roller and cage components, and then match the bearing surface and the surface of the casing hole directly as the bearing inner and outer rolling surface, in order to ensure the load capacity and operating performance As with a ferrule bearing, the hardness of the shaft or housing hole raceway surface, machining accuracy and surface quality should be similar to the raceway of the bearing ring. Such bearings can only withstand radial loads.

   Needle Bearings Needle roller bearings with fine and long roller (roller diameter D ≤ 5mm, L / D ≥ 2.5, L for the roller length), so the radial structure is compact, its inner diameter and load capacity and other types of bearings , The smallest diameter, especially for radial installation of the size of the bearing support results. According to the use of different occasions, can be used without the inner ring bearing or needle roller and cage components, and then match the bearing surface and the surface of the casing hole directly as the bearing inner and outer rolling surface, in order to ensure the load capacity and operating performance As with a ferrule bearing, the hardness of the shaft or housing hole raceway surface, machining accuracy and surface quality should be similar to the raceway of the bearing ring. Such bearings can only withstand radial loads.

   Needle Bearings Needle roller bearing bearing capacity, suitable for installation of restricted size of the support structure,

The journal surface is hardened as a rolling surface, and the bearing is fitted into the seat hole without being axially positioned.

The bearing should be filled with an appropriate amount of grease before installation. Normally, the BK bearing is not lubricated after assembly. For bearings with no extension at the end of the journal, the end seal is closed and can withstand small axial travel


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