Adding lubricating oil into concrete mixer can effectively reduce the abrasion of concrete and improve the service life of components. However, the user should pay attention to the following matters when adding lubricating oil to the mixer. Adding lubricating oil to concrete mixer can effectively reduce wear and improve the service life of components. However, the user should pay attention to the following matters when adding lubricating oil to the mixer.

1.混凝土搅拌机在运转过程中不得检修和润滑。

1. The concrete mixer shall not be overhauled and lubricated during operation.

2.混凝土搅拌机在使用后酌情对各润滑点加注必要的润滑油（滚轮轴、滚轮、钢丝绳等活动部位）。

2. After using the concrete mixer, add necessary lubricating oil (roller shaft, roller, wire rope and other moving parts) to each lubricating point as appropriate.

3.定期向各黄油嘴加注黄油，轴端密封处每4小时注润滑油一次，每周排污一次。

3. Add grease to each grease fitting regularly, inject lubricating oil into the shaft end seal every 4 hours, and drain the water once a week.

4.混凝土搅拌机减速箱的齿轮和轴承是利用齿轮回转将机油飞溅到箱体内壁，流入轴承中去进行润滑的。减速箱的油面应保持在油标尺两刻线之间为宜。

4. The gear and bearing of the concrete mixer gearbox use the gear rotation to splash the oil into the inner wall of the box and flow into the bearing for lubrication. The oil level of reducer should be kept between the two lines of oil scale.

油面过高或过低会导致各部温度升高或润滑不良，增加功率损耗和造成机器工作不良。新机开始使用头150小时和300小时要分别更换机油一次，以便排除试车时未完全洗净的污物。工作时，要经常检查油面高度，不足应及时添补。

If the oil level is too high or too low, the temperature of each part will rise or the lubrication will be poor, the power loss will increase and the machine will work poorly. The engine oil should be changed once in the first 150 hours and once in the first 300 hours after the new machine is put into use, so as to remove the dirt that is not completely cleaned during the test run. When working, the height of oil level should be checked frequently, and the shortage should be supplemented in time.

5.搅拌机选用的润滑油应具有一定购粘度和粘温特性，凝点低，抗氧化安定性良好，没有机械杂质和水分，不合腐蚀和磨损物质等。常用汽油机润滑油是以100 c的运动粘度编号的，有6号、10号、15号、8号稠化、8号低凝、8号合成稠化等牌号，牌号越高，粘度越大，其质量指标应符合标准规定。

5. The lubricating oil selected by the mixer should have certain viscosity and viscosity temperature characteristics, low freezing point, good oxidation resistance, no mechanical impurities and moisture, no corrosion and wear substances, etc. The commonly used gasoline engine lubricating oils are numbered with kinematic viscosity of 100 C, including No. 6, No. 10, No. 15, No. 8 thickener, No. 8 low pour point, No. 8 synthetic thickener, etc. the higher the grade is, the higher the viscosity is. Its quality index should meet the national standard.

混凝土搅拌机加注润滑油可不是一件小事，用户予以重视，正确添加，以保证搅拌机正常运行。

It is not a trivial matter to add lubricating oil to concrete mixer. Users should pay attention to it and add it correctly to ensure normal operation of mixer.