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Bearing testing: key testing items and methods Bearing inspection is a key process in bearing manufacturing and quality control.

The main difference between needle roller bearings and ball bearings is the type and characteristics of the rolling elements they use.

China is one of the countries that invented rolling bearings earlier in the world, and the structure of axle bearings has been recorded in ancient Chinese books. From the perspective of archaeological relics and data, China's oldest bearing with the prototype of modern rolling bearing structure appeared in 221-207 BC (Qin Dynasty) in Xuejiaya Village, Yongji County, Shanxi Province.

Thrust spherical roller bearings are key components in a variety of industrial applications, especially in heavy machinery where high load capacity and self-aligning capabilities are critical. These bearings are designed to carry axial loads in one direction and can handle significant radial loads, making them a versatile and reliable choice in demanding operating conditions.

The 135th Canton Fair closed in Guangzhou on the 5th, marking a significant milestone for China's No. 1 Exhibition. With a total of 246,000 overseas purchasers from 215 countries and regions participating in the conference offline, this edition of the fair saw a remarkable increase of 24.5% from the previous session, reaching a record high. The event, which has long been a cornerstone of global trade, once again demonstrated its unparalleled ability to bring together international buyers and Chinese suppliers, fostering mutually beneficial partnerships and driving economic growth.

The rolling element is the centripetal rolling bearing of a cylindrical roller. The internal structure of cylindrical roller bearings adopts rollers arranged in parallel, and there is a spacer or isolation block between the rollers, which can prevent the tilt of the rollers or the friction between the rollers, effectively preventing the increase of rotating torque.

The 135th China Import and Export Commodities Fair (Canton Fair) will be held in Guangzhou, China from April 15 to May 5, and preparations are progressing smoothly.