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Hot Pro:Rolling mill bearingsFour columns roller bearingDouble row Angle contact ball bearingDeep groove ball bearing
  • FC four-column roller bearing

    FC four-column roller bearing

  • FCD FCDP type four column roller bearing

    FCD FCDP type four column roller bearing

  • SFC type four column roller bearing

    SFC type four column roller bearing

  • Double column roller bearing

    Double column roller bearing

  • Four column conical roller bearings

    Four column conical roller bearings

  • Double row conical roller bearing

    Double row conical roller bearing

  • Double row conical roller bearing

    Double row conical roller bearing

  • Four-point contact ball bearings

    Four-point contact ball bearings

  • Four-point contact ball bearings

    Four-point contact ball bearings

COMPANY INFOMore >>

Hebei mill bearing co., LTD. Is a national secondary enterprise, which is a professional manufacturer of various mill bearings and large bearings. It is a member of the service center of the metallurgical parts service; It is the national secondary measure qualified unit. Company founded in 1969, since 1981 and the luoyang bearing research institute for technical cooperation, to more than hundreds of domestic steel roll bearing localization renovation, success and get the recognition of users. Now our company produces about 80,000 sets of mill bearings. The company has 498 employees, 100 engineers and technicians, including 35 people with high and intermediate titles. My company has from next makings, grinding, heat treatment, forging, car of a full set of processing equipment for a total of 179 units, including from Italy, Austria, Germany and other countries of advanced level CNC grinding machine, heat treatment equipment, can be processed Ф below 1600 mm diameter 0, 2, 6, 7, 9 kinds of bearings. The company has complete testing equipment, and has the mount guard qualification certification of qualified inspection personnel designated by the state, my company in September 2000 through the ISO9002 quality system certification, in October 2003 passed the ISO9001:2003 international quality system certification, through the complete quality control system, can produce to meet the requirements of users trust products, especially the introduction of Italian imports of three coordinate measuring machine, due to its high accuracy, good stability, dissemination of for our products provides a new quality assurance. Company bearing quality according to the law of the People's Republic of China machinery industry standard ", the main testing standard for the rolling bearing of rolling mill with four row cylindrical roller bearings, four row circular cone roller bearings standard: JB/T 5389-1995, the tolerance of measurement by GB307.2-1995 "measurement and test principle and method of rolling bearings, clearance measurement according to JB/T3573-93" rolling bearing radial clearance measurement and evaluation method of measurement, bearing parts, soft point, decarbonization of crack and bearing parts work surface burn inspection according to the national standard for inspection, bearing materials by GB3203-82 standard inspection, chemical analysis and internal defects rolling bearings and parts of goods by ZB J11 check 020-89, 100% check ring crack.

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The origin of the bearing

China is one of the earliest countries in the world to invent rolling bearings. In ancient Chinese books, the structure of axle bearing is well documented. From the archaeological relics and materials, the oldest of China's modern rolling bearing structures is the axis of the prototype Cheng, who appeared in the qin dynasty between 221 and 207 BC, is the village of xujiayya, in yongji county, Shanxi Province. Since the founding of the People's Republic of China, especially since the 1970s, the bearing industry has been driven by the strong push of reform and opening-up A new period of high quality and rapid development.

在十七世纪末,英国的C.瓦洛设计制造球轴承,并装在邮车上试用以及英国的P.沃思取得球轴承的专利。十八世纪末德国的H.R.赫兹发表关于球轴承接触应 力的论文。在赫兹成就的基础上,德国的R.施特里贝克、瑞典的A.帕姆格伦等人进行了大量的试验,对发展滚动轴承的设计理论和疲劳寿命计算作出了贡献。随 后,俄国的N.P.彼得罗夫应用牛顿粘性定律计算轴承摩擦。英国的O.雷诺对托尔的发现进行了数学分析,导出了雷诺方程,从此奠定了流体动压润滑理论的基 础。

 早期的直线运动轴承形式,就是一排在撬板下放置一排木杆。这个技术或许可以追溯到修建吉萨大金字塔的时候,虽然还没有明确的证据。现代直线运动轴承使用 的是同一种工作原理,只不过有时用球代替滚子。最早的滑动和滚动体轴承是木制的。陶瓷、蓝宝石或者玻璃也有使用,钢、铜、其他金属、塑料(比如尼龙、胶 木、特氟隆和UHMWPE)都被普遍使用。


Instruments and equipment