曰韩少妇内射免费播放,亚洲国产精品久久久久久久,极品新婚夜少妇真紧,精品无码一区二区三区爱欲九九,99久久人妻无码精品系列

News
Steel sleeve and copper sleeve which wear
2023-08-29

In terms of wear resistance, the steel sleeve is more wear-resistant, and in actual use, the steel sleeve is less, because the steel sleeve will wear the shaft quickly. Usually, when the bearing type plain bearing is designed, the shaft and sleeve must be made of two materials.


Since the shaft is rotating and the bearing bush is fixed, friction will inevitably occur during rotation, resulting in wear on the shaft and the bearing bush. The processing and disassembly accuracy and assembly difficulty of the shaft is relatively large, the bearing shell is fixed maintenance or replacement is relatively easy, so when choosing the material, the conscious choice of the bearing material is soft, phosphor tin bronze, aluminum iron bronze, tin zinc lead bronze, etc., according to different conditions of use to choose different copper alloys, and the material choice of the shaft will be harder or more wear-resistant.


In this way, in almost all shaft-bearing bushing matches, the shaft will be made of steel, and the bushing will be made of copper. To be precise: copper alloy, is a tin - and lead-based bearing alloy with anti-friction characteristics. This is because the copper material is not as wear-resistant as the steel material, in order to protect the shaft, the copper material is selected as the bearing.

Jiashan Rongchang Sliding Bearing Co., Ltd. produces a variety of copper sleeve, centrifugal casting, continuous casting and extrusion production of products are: copper bushing, copper slide, copper turbine, copper washer, flange bushing, self-lubricating bearings. Copper sleeve material: phosphorus copper, brass, tin bronze, aluminum bronze and so on.


主站蜘蛛池模板: 久久久精品人妻一区二区三区四| 国产精品午夜小视频观看| 日韩人妻无码一区二区三区| 呦系列视频一区二区三区| 精品国产制服丝袜高跟| 奇米影视7777狠狠狠狠色| 女人喷潮视频免费观看| 综合无码一区二区三区| 高清国产av一区二区三区| 久久99热精品免费观看牛牛| 亚洲av无码xxx麻豆艾秋| 午夜成人亚洲理伦片在线观看| 精品一区二区三区免费视频| 好吊妞人成视频在线观看27du| 无码中文人妻在线一区| 欧美最猛性xxxxx69交| 黑人巨大粗物挺进了少妇| 吃奶呻吟打开双腿做受动态图| 欧美日韩人妻精品一区二区三区| 十六以下岁女子毛片免费| 天天爽天天狠久久久综合麻豆| 精品国产av一区二区三区| 国产午夜精品一区二区三区漫画| 美女啪啪网站又黄又免费| 99热这里有精品| 欧美性猛交xxxx富婆| 内射爽无广熟女亚洲| 青柠影院免费观看高清电视剧丁香| 性人久久久久| 亚洲加勒比无码一区二区| 精品无码一区二区三区爱欲| 爱情岛论坛亚洲品质自拍hd| 九九久久自然熟的香蕉图片| 白嫩少妇喷水正在播放| 国产熟女露脸大叫高潮| 国产97色在线 | 免| 久久久噜噜噜久久| 亚洲熟妇av一区二区三区下载| 大屁股人妻女教师撅着屁股| 高清不卡一区二区三区| 大地影视mv高清视频在线观看|