Recently, the first-line maintenance worker of the Zhongnan Warranty Factory of Wuxi Bus Maintenance Branch has saved more time when adding butter to the bus wheel bearings, and the hands are no longer full of oil. They used something called a bearing grease filling device:
As soon as the switch is pressed, the butter is automatically filled onto the bearing. This device has recently applied for a utility model patent, which is the first patent obtained by Wuxi Bus Company. It was invented by a mechanic who worked in the field for more than a decade.
The 31-year-old Yu Jiaxuan has been doing first-line auto repair work for 12 years. After graduating from a car repair major in a secondary school, he used his spare time to go to the night business administration major and got his undergraduate degree. Yu Jiaxuan said that the bearings on the wheels directly affect the driving safety of the vehicle. "If the grease is not in place, the bearings work abnormally, and it is easy to cause the wheels to leave the car, which is very dangerous for a passenger." The maintenance and repair work of the wheels and bearings is carried out daily by the maintenance masters. But before, mainly by the maintenance workers hand-filled bearings with butter, this manual filling of butter has many shortcomings: low efficiency; uneven filling, easy to increase bearing friction and wear, reduce its service life; It is full of oil and grease, so that the butter is wasted. “I just want to know how to directly contact the butter without using the hand, but let the butter be injected automatically, which is convenient and economical.†Yu Jiayu used his spare time to view related books and make it. After half a year of research, the "bearing grease filling device" was finally designed. This device is equivalent to a cover. As long as the maintenance worker covers the device and opens the switch, the grease will be automatically filled onto the bearing. Convenient, this also frees the hands of the maintenance workers from the oil. Shortly after the development, the device was promoted in the Zhongnan Warranty Factory. Everyone found it really good. Not long ago, the invention successfully applied for a utility model patent and became the first patent of Wuxi Bus Company.
It is understood that in addition to this patented invention, Yu Jialu and his colleagues have pondered the invention of several practical repair tools, such as clutch test bench, mobile pneumatic grease filling machine, centralized lubrication test bench, etc. It is unique to the Zhongnan Warranty Factory. Cai Liang, secretary of the Party Branch of Zhongnan Warranty Factory of Wuxi Bus Maintenance Branch, introduced that Yu Jiayu loves to study and often combines the work to make simple and practical maintenance work and equipment. In order to make Yu Jiayu better research, the factory set up “Yu Jiayu Innovation Studio†in July 2011 to provide a creative platform for Yu Jialu and his partners. This year, “Yu Jiayu Innovation Studio†was named “Yu Jiayu Skill Master Studio†by Wuxi Municipal People’s Insurance Bureau.
Http://news.chinawj.com.cn Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn
The full ceramic ball bearings listed below are supplied with rings and balls made from zirconium dioxide (ZrO2). These zirconia bearings are available as full complement (no cage) or with cages made from PTFE, PEEK or 316 stainless steel.
These are non magnetic, non-conductive and highly corrosion resistant to most chemicals although ZrO2 bearings are not recommended for prolonged contact with steam. Full complement bearings or those with a 316 stainless cage can be used up to 400°C while bearings with a PEEK or PTFE cage can cope with temperatures of up to 250°C. For temperatures below -70°C, PTFE or 316 stainless steel cages are preferred. Standard radial clearance for full ceramic bearings is C0 but other clearances can be supplied to order.
ZrO2 ceramic bearings are generally used for their extreme temperature capabilities, excellent corrosion resistance or non-magnetic properties. Other sizes can be supplied on request.
The Description of Ceramic Bearings:
Compared to steel, Ceramic ball Bearings have many specific advantages. They offer superior corrosion and heat resistance, higher dimensional stability, and lower density, which facilitate high speed. Ceramics are superior to steel in heat and corrosion resistance, and are lightweight and extremely hard as well. Consequently, ceramic rolling bearings can be used in environments where conventional steel bearings cannot. That is to say, the superiority of these bearings makes it possible that they can be applied in some special environments.
Firstly, they can be used in corrosive environments. Compared to stainless steel bearings, hybrid and all Ceramic Bearing lasted three and twenty times longer respectively. It is presumed that water readily adheres to silicon nitride and forms a better lubrication film, leading to extended bearing life.
Secondly, they can be performed in corrosive agents. Generally, silicon nitride has excellent corrosion resistance. However, corrosion resistance varies depending on the type and quantity of sintering additives, and certain corrosive agents decrease in hardness and flexural strength. In such situation, it is can be proved that the carbide-based ceramic bearings are the most effective.
Thirdly, they can be used in high-temperature vacuum. An all-silicon nitride Ball Bearing with a self-lubricating laminated cage (mainly composed of MoS2) and with MoS2-coated rings and balls proved superior in durability in a high-temperature vacuum environment. Compared with the hybrid bearings, the all-ceramic bearing was superior in both dynamic frictional torque and life.
Fourthly, they can be performed with poor lubrication. As ceramics are extremely hard and have outstanding wear resistance, they outperform other materials in bearing life without lubrication. According to a test, the steel bearing seized within a short period while the hybrid and all 627 Ceramic Bearings, though sustaining wear, did not. And the all-ceramic bearing sustained considerably less wear than the hybrid bearing, indicating that its endurance life is much longer.
Cermic Ball Bearing,Full Ceramic Bearing,Hybrid Ceramic Bearing,Self-Aligning Full Ceramic Ball Bearing
Shijiazhuang Longshu Mechanical & Electrical Equipment Trading Co., Ltd. , https://www.longsbearings.com