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: 欧美国产激情二区三区 | 99re6在线视频免费精品 | 国产精品视频免费的 | 日日干干 | 久久精品伊人 | 日本高清中文字幕视频在线 | 伊伊综合网 | 欧美成人性色 | 一级日本高清视频免费观看 | 色综合亚洲天天综合网站 | 在线欧美一级毛片免费观看 | 色花堂国产精品第二页 | 久久婷婷丁香七月色综合 | 99资源站| 欧美xxxxx九色视频免费观看 | 成 人 黄 色视频免费播放 | 奇米第四色在线观看 | 爱爱视频在线观看 | 8x在线永久成人影院 | 久热这里只有精品在线 | 国产免费私人影院永久免费 | 免费a一毛片| 一区二区三区免费视频 www | 午夜精品久久久久久久四虎 | 国产精品每日更新 | 亚洲日本中文 | 99热久久精品最新 | 欧美一级级毛片 | 老子影院我不卡 | 国产亚洲欧美精品久久久 | 2020亚洲欧美日韩在线观看 | 精品午夜寂寞影院在线观看 | 草久在线 | 卡通动漫精选国产欧美 | 欧美影院一区二区 | 日日摸夜夜欧美一区二区 | 日日夜夜嗷嗷叫 | 国产永久 | 成人日韩视频 | 亚洲精品一二三四 | 99日精品欧美国产 |