亚洲系列一区a久久|国产欧美成人不卡视频|了解最新爱爱视频天天干|日韩午夜精品一区二区三区|国产精品一区二区日韩91|欧美大片国产在线永久播放|福利国语自产拍在线视频中文|国产日韩区一区二区三在线视频

Copper sleeves are widely used in various fields: axial thrust bearing rings are spare parts on machines, which are used in diesel engines, automobiles, agricultural machinery, hydraulic machinery, machine tools, forestry machinery, engineering machinery, mines, railways, ships, petrochemical machinery, die-casting mac……

The copper sleeve serves as a bearing and belongs to the general category of sliding bearings. It is a bearing that operates under sliding friction and rotates relative to the shaft. It generally requires an auxiliary lubrication system to work. Sliding bearings work smoothly, reliably, and without noise. Under liquid ……

Gear transmission: Advantages: 1. It can transmit motion and power between any two axes (parallel, intersecting, or intersecting) in space; 2. Accurate transmission ratio; 3. Compact structure, suitable for close range transmission; 4. High transmission efficiency (0.92~0.99); 5. The transmitted power and speed range i……

The definition of copper nut is a nut made of copper material (usually lead brass, such as H59, H62) The copper nuts we encounter in our daily lives are mainly hexagonal nuts or other copper nuts that match bolts. So why are copper nuts used in daily production activities? Because copper nuts have advantages such as lo……

The characteristics of the worm gear and worm gear mechanism are: 1. It can achieve a large transmission ratio, which is compact compared to the staggered shaft helical gear mechanism. 2. The meshing tooth surfaces of the two wheels are in line contact, and its load-bearing capacity is greatly higher than that of the s……

The wear resistance of copper sleeves is related to many factors: A. The magnitude of the stress on the copper sleeve. When the stress on the copper sleeve is large, a material with higher hardness is needed, and when the stress is small, a material with lower hardness should be used; B. The harder the material of the ……

In order to safely, timely, accurately, and at a low price send copper parts to the customer's company, our company provides the following shipping methods for customers: 1. Packaging the products in a location close to the company, and the company has its own vehicle for transportation, which is the fastest, safest, a……

For tin bronze liner castings, when their length and thickness are greater than 25mm and sand casting is used, it is difficult to fill due to insufficient filling channels. In centrifugal casting of copper alloys, the difficulty of centrifugal casting of large tin bronze liners is relatively high, especially under the ……

Dongguan Sanhe Machinery Co., Ltd. commonly uses casting technology 1. Metal mold casting, also known as hard mold casting, is a casting method that pours liquid metal into the metal mold to obtain castings. Molds are made of metal and can be reused multiple times (hundreds to thousands of times). The castings currentl……

The commonly used materials for bearing shells include brass, tin bronze, aluminum bronze, and phosphorus bronze. Due to the different performance of bearing shells, the selected materials are also different. Brass is the most common copper alloy material, with low price and average wear resistance. It is a substitute ……

Bushing: A ring sleeve that serves as a lining. Function: In moving parts, long-term friction causes wear and tear on the parts. When the gap between the shaft and the hole is worn to a certain extent, the parts must be replaced. Therefore, designers choose materials with lower hardness and better wear resistance as sh……

Worm gears are commonly made of cast tin bronze and aluminum iron bronze; Low speed and unimportant transmissions can use cast iron materials. Cast iron bronze: good friction, good adhesion resistance, expensive price, slightly lower strength. Cast aluminum iron bronze: slightly inferior in friction reduction and adhes……