久久精品国产99久久久,天天躁日日躁狠狠躁AV中文,亚洲精品美女久久久久99,国产高级会所按摩妓女在线

Cylindrical Roller Bearings
Product Name: Cylindrical Roller Bearing
Product No:NU200
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.
苍南县| 双柏县| 呼和浩特市| 诸暨市| 平乐县| 岱山县| 古丈县| 织金县| 灵台县| 钦州市| 周口市| 安多县| 湄潭县| 任丘市| 札达县| 华阴市| 永川市| 潍坊市| 蛟河市| 隆林| 迭部县| 五峰| 信宜市| 梅河口市| 鄂托克旗| 中西区| 晋中市| 理塘县| 来安县| 广河县| 齐河县| 广宗县| 夹江县| 铁岭市| 钦州市| 吐鲁番市| 陆川县| 长武县| 禹城市| 大悟县| 海宁市|