Lubrication and maintenance Oldham formula highest circumferential speed of about 30m / s encoder coupling, with No. 2 grease lubrication, the middle slider open areas filled with fat free, lubrication intervals 1000 hours, for the use of ball bearing grease. The maximum circumferential speed of about 30m / s, with the N220 gear oil lubrication, the middle slider to idle mines filled with oil, oil change 1000 hours, sometimes using a felt pad soaked with oil. Disc springs up to the peripheral speed of about 60m / s, with a No. 2 or 3 grease lubrication, the amount of full coupling, the lubrication intervals of 12 months, strict sealing requirements; maximum circumferential speed of about 150m / s, with the N150, N220 gear oil lubrication, requires sufficient flow continuously through the axial coupling. 1) diaphragm coupling membrane stresses generated torque. Set torque transmitted to T (Nm), the total number of pieces of m, 8 holes for bolts, the simplifications know: Torque monolithic diaphragm T1 = T / m couplings on each primary bolt suffered force F = T / 4mR. (2) high-speed rotation centrifugal stress generated due to the inertia. And coupling bolts assume the same high-precision coupling diaphragm material calculated to obtain their quality, according to the location and the helix angle, the centrifugal force can be considered, and the role of the center of mass in total. Centrifugal force at high speed mechanical stress calculation structure is very important Karp Ling coupling, its centrifugal force can be radial force F = (2Πn / 60) 2rp loaded radially outward direction, radial displacement of the stationary intermediate bolt, circumferential and axial displacement, the peripheral no other loads. Micro-electrical coupling, Korea and Taiwan transmission machinery, coupling provided by the Dongguan City, Transmission Machinery Co., Korea and Taiwan. Dongguan City, South Korea Taiwan Transmission Machinery Co., Ltd. (www.dghantai.com) (www.hantai168.com) is an industry leader in Dongguan, Guangdong, machine tool accessories, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum to meet customer needs. Transmission machinery in Korea and Taiwan led the staff warmly welcome all inquiries negotiations, Korea and Taiwan to create a better future transmission machinery.