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: 青青草手机在线视频| 天天欧美| 在线成人免费| 欧美一级特黄aaa大片| 香蕉视频国产在线观看| 国外免费精品视频在线观看| 日韩天堂| 综合欧美日韩| 日韩黄色成人| 中文字幕成人免费高清在线| 日本69xxxxxxxx69| 亚洲爽爽| 青草免费在线| 亚洲一区精品中文字幕| 欧美一级片在线观看| 亚洲成a人不卡在线观看| 久久青草视频| 污免费视频| 精品国产免费一区二区| 天天拍久久| 狠狠鲁狠狠操| 婷婷色亚洲| 久久久久久夜精品精品免费啦| 天天插天天射| 精品一精品国产一级毛片| 婷婷久久精品| 美女被网站免费看九色视频| 午夜一级精品免费毛片| 久久久久免费精品国产| 午夜黄色福利视频| 男女交性视频免费播放| 亚洲大片在线观看| 欧美在线 | 亚洲| 一二三四影视在线观看免费视频| 欧美综合亚洲| 在线操| 日韩在线免费观看视频| 成人毛片在线播放| 天天天天天天操| 男人天堂欧美| 一级aaa毛片|