In the past, there were few types of couplings, and there was little room for choice. They are high-performance and new technologies at home and abroad.00275. fan motor bearing are four types of keyway type and four types of keyless connection.　　 The phenomenon of improper selection of couplings is common in my country.037.m2

Weight KgYJ1d1 d2 dzLCL1710378018 19423017016--0.860 71 75142107350540401.0512. In the newly designed transmission system, seven types of shaft holes in accordance with GB/T 3852 should be selected, and the J 1 shaft hole type is recommended to improve versatility and interchangeability. Standard couplings are mature and generally reliable. (7

) Variety, type, specification (model) of fixed coupling 　　According to the comprehensive factors of power machine and coupling load category, rotation speed, working environment and other factors, select the coupling type, according to factors such as matching of coupling and connection conditions Select the coupling type; check and calculate according to the nominal torque, shaft hole diameter and shaft hole length to finally determine the coupling type. Model Nominal Torque Tn (Nm) Allowable Speed ​​[n] (r/min) Shaft Hole Diameter Shaft Hole Length DCC1C2 Moment of Inertia Kg. When the coupling is used with the brake, the coupling with brake wheel or brake disc type should be selected; when overload protection is required; the safety coupling should be selected ; The length of the shaft hole is in accordance with the coupling product standard

When the torque and speed are the same and the shaft diameters of the main and driven ends are different, the coupling type should be selected according to the large shaft diameter.513220. Nowadays, there are many elastic couplings. (6) Selection of coupling type The choice of coupling type depends on the coupling type of the main and driven ends and the shaft. Both the drum-shaped teeth and straight teeth are rigid movable couplings. In metallurgical machinery and heavy machinery, low-speed and heavy-load shafting transmission shock, vibration and two-axis offset are quite prominent unfavorable factors.On the basis of considering the above comprehensive factors, the coupling selection procedure is as follows: