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: 国产午夜伦鲁鲁| 亚洲乱码中文字幕综合| 亚洲无码在线播放| 亚洲 欧洲 日韩 综合二区| 丰满饥渴老女人hd| 无码一区二区三区免费视频| 国产裸体xxxx视频在线播放| 人妻互换精品一区二区| 天天躁人人躁人人躁狂躁| 大地资源网高清在线播放| 国产无遮挡又黄又爽免费网站| 熟妇与小伙子matur老熟妇e| 国产极品美女高潮抽搐免费网站| 熟女精品视频一区二区三区| 亚洲精品无码专区久久久| 漂亮人妻洗澡被公强 日日躁| 女人让男人桶30分钟| 国产毛多水多高潮高清| 精品精品国产高清a级毛片| 国产综合在线观看| 国内精品自线在拍| 色两性网欧美| 久久超碰97人人做人人爱| 国产精品无码v在线观看| 少妇粉嫩小泬喷水视频www| 欧美xxxxx高潮喷水| 亚洲国产成人va在线观看| 国产一区二区三区内射高清| s级爆乳玩具酱国产vip皮裤| 国产成人av三级在线观看按摩| 少妇人妻无码专区在线视频 | 免费国精产品—品二品国精 | 久久久无码精品亚洲日韩按摩| 亚洲av无码一区二区乱子伦| 大地资源网第二页免费观看 | 免费无码一区二区三区蜜桃| 天天av天天翘天天综合网| 99久久99久久精品免费看蜜桃| 在教室伦流澡到高潮hnp| 日本丰满少妇xxxx| 厨房人妻hd中文字幕|