乱亲女h秽乱长久久久-日韩一区二区三区无码影院-亚洲av无码乱码精品国产-国产九九99久久99大香伊-国产裸体xxxx视频在线播放

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: 亚洲国产精品无码一线岛国| 国产综合久久久久久鬼色| 两个人看的www高清视频中文| 亚洲中文字幕无码一区| 国内精品一区二区三区 | 日韩精品区一区二区三vr| 国产日韩精品一区二区三区在线| 老少交欧美另类| 亚洲欧美日韩中文高清www777| 亚洲男人第一天堂| 两女女百合互慰av赤裸无遮挡| 一二三四在线视频观看社区| 欧美亚洲精品suv| 亚洲欧美一区二区三区| 精品深夜av无码一区二区老年| 国产白浆喷水在线视频| 亚洲日本香蕉视频观看视频| 日韩一区精品视频一区二区| 国产精品一区二区av麻豆| 2018国产大陆天天弄| 国产美女久久精品香蕉69| 国产女人的高潮大叫毛片| 久久人人爽爽人人爽人人片av| 亚洲成在人线av无码| 亚洲av无码乱码麻豆精品国产| 国产无遮挡又黄又爽又色| 伊人久久大香线蕉av不卡| 人妻丝袜中文无码av影音先锋专区| 成人性爱视频在线观看| 人人做人人爽人人爱| 男人的天堂av网站| 国产成人综合久久精品推最新| 亚洲av鲁丝一区二区三区黄| 99久久国产综合精品成人影院| av天堂久久天堂av色综合| 成全电影在线观看免费观看国语| 久久精品人妻中文系列| 大地资源免费第二页| 精品乱码久久久久久久| 人妻插b视频一区二区三区| 国产男女猛烈无遮挡免费视频|