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: 国产高潮视频在线观看| 女同性av片在线观看免费网站| 亚洲色欲久久久久综合网| 情侣作爱视频网站| 无码人妻丰满熟妇区毛片18| 色欲av无码一区二区人妻| 日本高清在线一区二区三区| 日本丰满老妇bbw| 4399理论片午午伦夜理片| 免费无码av一区二区三区| 亚洲av无码乱码在线观看性色 | heyzo无码综合国产精品| 内谢少妇xxxxx8老少交| 久久久精品午夜免费不卡| 亚洲国产精品成人精品无码区| 妺妺窝人体色www在线观看| 色视频线观看在线网站| 无码人妻少妇伦在线电影| 久久久精品人妻一区亚美研究所 | 久久精品国产精品青草| 亚洲综合精品第一页| 久久99精品国产麻豆| 熟妇与小伙子matur老熟妇e| 亚洲色偷偷偷综合网| 精品少妇无码av无码专区| 99久久人人爽亚洲精品美女| 国产乱子伦| 东京热无码av一区二区| 亚洲狠狠婷婷综合久久蜜芽| 久久久久99精品成人片直播| 亚洲爆乳无码专区| 欧美无砖专区一中文字 | 日产精品久久久久久久蜜臀| 久久久精品日本一区二区三区| 国产乱码卡一卡2卡三卡四| 色久悠悠婷婷综合在线亚洲| 激情97综合亚洲色婷婷五| 国产午夜无码视频在线观看| 久久久久亚洲av成人人电影软件| 中文字幕无码一区二区免费| 久久精品国产99精品国产亚洲性色|