成年性生交大片免费看-成年性午夜免费视频网站-成年在线视频-成年在线网站免费观看无广告-成片免费观看-成片免费观看视频大全

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: 天天综合射| xxxx欧美| 欧美福利二区| 婷婷六月色| 国产性videostv另类极品| 三级视频在线| 桃花色综合影院| 99草精品视频| 日本天天射| 一区二区中文字幕亚洲精品| 啪一啪日一日| 亚洲免费天堂| 欧美性色一级在线观看| 性欧美bbbbbb动漫| 69国产视频| 日韩三级黄色片| 综合久青草视频| 日本天堂网站| 中文字幕第九页| 日韩成人在线免费视频| 中文天堂在线最新版在线www| 伊人狠狠| 青青草免费在线观看视频| 天天干夜夜草| 国产亚洲综合精品一区二区三区| 四虎国产精品永久在线看| 国产福利在线观看一区二区| 手机看片福利日韩| 中文字幕精品亚洲无线码二区| 日本wwwwww| 中文字幕亚洲一区| 欧美又肥又胖的大bbwⅹ| 亚洲欧美中文日韩v在线观看| 欧美在线色视频| 一区二区三区视频观看| 日本深夜福利视频| 5g影院欧美成人免费| 色婷婷综合久久久中文字幕 | 亚洲色图 欧美| 日本国产免费一区不卡在线| 中文字幕色网站|