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: 久久伊人影视| 日本人xxxxxxxxx69| 四虎海外在线永久免费看| 日韩有色| 一区视频免费观看| 欧美伊人久久| 亚洲成a人片在线观| 激情四月婷婷| 青青青免费高清视频在线| 亚洲bbbbbxxxxx精品三十七| 黄色在线观看视频| 桃花岛亚洲精品tv自拍网站| se综合| 日本在线视频免费看| 午夜老司机永久免费看片| 国产色拍| 特黄大片aaaaa毛片| 在线黄色.com| 青青视频网站| 亚洲一区二区三区播放在线| 欧美日韩生活片| 亚洲不卡网| 欧美视频亚洲视频| 亚洲欧洲精品成人久久曰影片| 欧美videosex性欧美成人| 色婷婷色综合激情国产日韩| 中文字幕天堂最新版在线网| 日本在线高清| 69视屏| 色噜噜狠狠狠狠色综合久不| 白嫩少妇激情无码| 日本三级a| 在线看片成人| 日韩午夜激情视频| 天天撸夜夜操| 禁漫羞羞a漫入口| 午夜成人在线视频| 成人网男女啪啪免费网站| 亚洲欧美久久精品| 青草青草久热精品观看| 影音先锋男人资源站|