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: 玖玖爱这里只有精品| 综合五月| www.xxx国产| 看片免费黄| 天天操电影| 伊人网视频| 青青青视频精品中文字幕| 亚欧免费视频| 久久久免费的精品| 天天影视色香欲综合网小说 | 男人的天堂一区二区视频在线观看| 日韩毛片在线| 性欧美欧美之巨大69| 精品你懂的| 日韩一二区| 中日韩毛片| 日韩成人午夜| 综合久久99| 日韩综合色| 一区二区三区四区视频| 欧美一级片网址| 亚洲欧洲精品成人久久曰影片| 国产xxxxxx久色视频在| 情趣店上班h系列小说| 亚洲一区欧美一区| 青青娱乐| 在线黄| 日韩a毛片| 99久久精品免费观看国产| 日韩欧美亚洲综合一区二区| 69日本xxxxxxxxx内谢| 色爱区综合激情五月综合色| xxx86日本人| 水果视频色版| 国产一区二区在线不卡| 天天射日日| 免费一级毛片私人影院a行| 亚洲乱亚洲乱妇41p| 日本porno动漫| 扬思敏版1996无减删版| 日本欧美在线视频|