Measuring center distance method: straight tip deformation when the gear tooth wear serious, rolling, etc. Gear Factory, the above two methods can not measure, then we may require customers to provide paired sun gear A and two from the number of teeth of the gear These are easy to do, and then calculated modulus or diametral pitch: m = 2 * A / Z1 + Z2 Dp = 25.4 * (Z1 + Z2) / 2 * A commonly used steel manufacturing gear have hardened and tempered steel, hardened steel, case hardening steel and nitriding steel. Slightly lower than the strength of steel forgings spur strips, commonly used in the larger size of the gear; the poor mechanical properties of gray cast iron can be used for light load of gear in the open; ductile iron may be partially replaced by steel gear; Plastic gears are used for light load and low noise requirements of local, paired gear is generally good heat conductivity steel gears. Future overloads forward gear, high speed, high precision and high efficiency, direction, and strive to small size, light weight, long life, and economic and reliable. The development of gear theory and manufacturing processes will be further study the mechanism of tooth damage, the intensity of which is to establish a reliable basis for calculation is to increase the carrying capacity of gears, gear extended theoretical basis of life; the development of a circular arc tooth profile represented New tooth; research of new materials and manufacturing gear gear new technology; the elastic deformation of gear research, manufacture and installation errors, and temperature distribution of spur gears, tooth modification carried out to improve the smooth operation of the vertical gear and to increase the contact area of ??the tooth at full load, thereby increasing the carrying capacity of gears. Friction, lubrication theory and lubrication technology is the basis for gear research work, study elastic hydrodynamic lubrication theory, promote the use of synthetic lubricants and extreme pressure additives added as appropriate in oil, not only can increase the carrying capacity of the tooth surface, and can improve transmission efficiency. Luoyang Fuyuan gear Machinery Co., Ltd. is the production of construction machinery, tractors and cars gear, shaft, disk parts, sell other products integrated manufacturing enterprises. Spur map, Fuyuan gear industry leader, Zaozhuang spur gear provided by Luoyang Fuyuan Machinery Co., Ltd. Luoyang Fuyuan gear Machinery Co., Ltd. (www.lyfycl.com) is a leader in Luoyang, Henan Province, gear over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Fuyuan gear in leadership with the staff warmly welcome all inquiries negotiations to create a better future Fuyuan gear.