Needle roller bearings

Needle roller bearings for the metal forming the outer ring with a thin needle bearings. Its main characteristic is low sectional height and high load capacity to withstand. Mainly used for compact, inexpensive and bearings inside the hole as the needle roller and cage assembly can not roller bearing configuration. Bearings and bearing housings shall be interfering with the install. Boxes can be avoided if the shoulder, only dynamic features such as axial location, then the bearings inside the hole can be done very easy and economical.
Mounted on the shaft end drawn cup needle roller bearings with open sides (1) and unilateral closed (2). The base closed end drawn cup can withstand small axial guiding force.
Needle roller bearings are generally not attached to the inner ring. Hard Armor Plate in a journal can not be the occasion, listed in the table can be used inner ring.
Needle roller bearings and hardened steel outer ring needle roller and cage assembly can not be separated. Storage space can be extended free of lubricant added lubrication interval. Bearings generally use single design. However, wide specification series bearing 1522,1622,2030,2538 and 3038, except they are equipped with two needle roller cage assemblies. The bearing outer ring with lubrication hole. According to user needs, shaft diameter greater than or equal to all the single 7mm Needle roller bearings can be equipped with a lubricating oil hole of the outer ring (code suffix AS1).
Can not be installed due to space constraints in the oil seal of the occasion, to provide open-ended or closed end Needle roller bearings with seals (3-5). Such equipment, polyurethane or synthetic rubber bearing friction type seal, which filled with good corrosion performance of lithium-based grease for operating temperature -20 to +100 ℃.
A seal bearing inner ring outer ring width than 1mm, which makes bearings in the drive shaft to the bearing box with a little displacement can also work to ensure a good seal and to prevent injury to bearing contamination. Lubricating the bearing inner ring has holes, you can configure according to the needs of the bearing by the outer or inner ring relubrication. Combined needle roller bearings
To the heart by needle roller bearings and thrust bearing unit bearing a combination of components, and its compact structure, small size, high precision rotation, can withstand high radial load at the same time bear certain axial load. And product structure forms, wide adaptability, easy to install.
Combined needle roller bearings are widely used in machine tools, metallurgical machinery, textile machinery and printing machinery and other machinery and equipment, and mechanical system design enables very compact smart.