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Drawn Cup ​Needle roller bearings
Drawn Cup ​Needle roller bearings
2014-09-22 by seoerccy
Needle roller bearings with a thin metal forming the outer ring needle roller bearings. Its main feature is the low sectional height and the ability to withstand high loads. Mainly used for compact, inexpensive and bearings inside the hole can not be used as needle roller cage assemblies raceway bearing configuration. Bearings and bearing housings shall interfere with the way the installation. If you can save the axial positioning box shoulder, retaining ring and other functions, then the bearings inside the hole can be made very simple tower crane bearing and economical.

Mounted on the shaft of the drawn cup needle roller bearings with bilateral and unilateral open closed. Drawn cup closed proximal end surface can withstand small axial guiding force.
Needle roller bearings are generally not attached to the inner ring. In the journal of the occasion can not be hardened and ground, you can use the inner listed in the table.
Needle roller bearings and needle roller hardened steel outer cage assembly can not be separated. Lubricant storage free space can be extended relubrication intervals. Bearings generally use single design. With the exception of wide specifications bearing 1522,1622,2030,2538 and 3038 series, which is equipped with two needle roller cage assemblies.
Needle roller bearings with seals
Due to space limitations can not be installed in the seal of the occasion, providing an open-ended or closed end Needle roller bearings with seals (3-5). These bearings equipped with polyurethane or synthetic rubber friction seal, which lithium-based grease is filled with good rust resistance, suitable for operating temperatures from -20 to + 100 ℃.
A seal bearing outer ring inner wider than 1mm, this is what makes the bearing shaft relative displacement of the bearing box with a miniature linear bearings little work can be guaranteed a good seal and prevent injury to bearing contamination. Bearing inner ring also has lubrication holes, according to the needs of the bearing arrangement, supplemented by outer or inner ring lubrication.
Thrust
Child or ball thrust bearing thrust needle roller or cylindrical roller by the band cage assemblies and thrust washers. Needle and cylindrical roller thrust by keeping hold and guide rails. When used with a different series of DF thrust bearing washers, can offer many different combinations of bearing configuration. As the use of high precision cylindrical rollers (needle) to increase the contact length of the bearing can be obtained such that a high load capacity and high rigidity in a small space. Another advantage is that the parts can be omitted if the adjacent surface suitable for raceway washers, can compact design, cylindrical needle and cylindrical roller DF thrust needle roller bearings and thrust cylindrical roller bearings for surface modification can reduce edge stress, improve life.



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