First, understand the conditions of the bearing: 1, the main function and structure of the host: for example, vacuum equipment bearings, motors - spindle, conveyor speed and torque. 2, the bearing mounting portion. 3, required to withstand bearing size, direction, properties. Whether the impact load and so on. 4, bearing lubrication conditions. 5, around the bearing environmental conditions, such as: corrosive, cleanliness, humidity, ambient temperature, heat dissipation and the like. 6, bearing operating speed, temperature. 12, needle roller bearings are characterized by the length (l) and the roller diameter (Dw) of the ratio L / Dw> 2.5 and roller diameter (Dw) <6mm roller bearings called needle bearings. 12.1 radial needle bearing small size but high radial load capacity Shenzhen oil bearing, can not withstand axial load, only as supporting the free end. Conducive to the miniaturization and weight reduction. Needle roller bearings 12.2 cleaning machine is used without inner or outer ring of the bearing zone, only with keeping the needle holder assembly, requiring matching precision journal or bearing bore surface hardness should be bearing rings roll the same way. 12.3 coefficient of friction needle roller bearings, it is not suitable for higher speeds. Cleaning machine bearings, bearing Electrical Shun GF (certified), the bearing is provided by Shenzhen-GF bearing Electrical Co., Ltd.. Shenzhen City, Guangdong Development bearing Electrical Co., Ltd. (www.sgfzc.com) (www.sgfzc.com) is Shenzhen, the other leaders over the years, the company implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum to meet customer needs. In bearing Electrical leadership Shun GF staff warmly welcome all inquiries negotiations to create Shun GF bearing Electrical better future. You can also access (www.sgfzc.com/supply_details_47920990.html), for more information about the company.