熟妇人妻无码中文字幕-熟妇人妻无码中文字幕老熟妇-熟妇人妻系列aⅴ无码专区友真希-熟妇人妻系列av无码一区二区-熟妇人妻一区二区三区四区-熟妇人妻中文av无码

Cylindrical Roller Bearings
Product Name: Cylindrical Roller Bearing
Product Code: NU NJ NUP N NF
Product Description: Main uses: Large and medium-sized motors, rolling stock, machine tool spindles, internal combustion engines, generators, gas turbines, gearboxes, rolling mills, vibrating screens, and lifting and transportation machinery.
details:
 

Cylindrical roller bearing
The rolling element is a radial rolling bearing of a cylindrical roller.
Cylindrical Roller Bearings
Cylindrical rollers and raceways are line contact bearings. Load capacity, mainly bear radial load. The rolling element has little friction with the ferrule rib and is suitable for high speed rotation. According to the ferrule with or without ribs, it can be divided into single row bearings such as NU, NJ, NUP, N, NF, and double row bearings such as NNU and NN. The bearing is a structure in which the inner ring and the outer ring are separable. Cylindrical roller bearings with no ribs on the inner or outer ring, the inner and outer rings can move relative to the axial direction, so they can be used as free end bearings. A cylindrical roller bearing with a single rib on one side of the inner and outer rings and a single rib on the other side can withstand a certain degree of axial load in one direction. Steel stamping cages or copper alloy cages are generally used. However, some use polyamide shaped cages.
Cylindrical roller bearing features:
1. The roller and the raceway are in contact with the wire or repaired, and have a large radial load capacity, which is suitable for bearing heavy loads and impact loads.
2. The friction coefficient is small, suitable for high speed, and the limit speed is close to the deep groove ball bearing.
3. N-type and NU-type can move axially, can adapt to the change of the relative position of the shaft and the shell caused by thermal expansion or installation error, and can be used as free end support.
4. The machining requirements of the shaft or the seat hole are high. After the bearing is installed, the relative deflection of the outer ring axis should be strictly controlled to avoid contact stress concentration.
5. The inner or outer ring can be separated for easy installation and removal.
The main purpose:
Large and medium-sized motors, rolling stock, machine tool spindles, internal combustion engines, generators, gas turbines, gearboxes, rolling mills, vibrating screens, and lifting and transporting machinery.
主站蜘蛛池模板: 香蕉在线观看999 | 国产精品91视频 | 亚洲国产精品一区二区首页 | se01国产短视频在线观看 | 久久伊人一区二区三区四区 | 天天操视频 夜夜 | 四虎影院永久在线观看 | 亚洲性综合 | 免费看欧美理论片在线 | 在线播放亚洲精品富二代91 | 啪啪99久久综合精品色 | 99九九精品免费视频观看 | 草草福利影院 | 久久中文字幕网 | 国内精品免费网站牛牛 | 一区二区三区精品国产 | 成人私拍福利视频在线 | 国产一区二区成人 | 日韩国产欧美成人一区二区影院 | 欧美大片在线观看成人 | 日日夜夜综合 | 香蕉色香蕉在线视频 | 欧美成人h版影片在线观看 欧美成人h精品网站 | 国产欧美一区二区三区在线看 | 一级呦女专区毛片 | 男人的天堂欧美精品色偷偷 | 久草在线新免费 | 日韩 视频在线播放 | 99国产精品免费视频观看 | 日本一区精品久久久久影院 | 免费一看一级毛片全播放 | 伊人黄网 | 国产精品嫩草影院99av视频 | 可以免费观看欧美一级毛片 | 玖玖国产在线观看 | 久久久这里有精品999 | 午夜久久久精品 | 日本h在线精品免费观看 | 九九热中文字幕 | 在线欧洲成人免费视频 | 欧美一级片 在线播放 |