The Flexible Coupling Cannot Meet The Interchange Requirements

The most important feature of the elastic pin coupling is the hole punched in the flange, and nylon rod or threaded pin is worn inside. However, the flange holes must be interchanged to ensure the service life of the coupling. There are three types of shaft-hole interchangeable fits, depending on the application of your shaft and hole. Clearance fit; relative motion transitional fit: Interference fit between relative motion and fixation: The shaft and the hole do not move relative to each other and are fixedly connected. The selection of matching levels is generally 6~10, and the following is a detailed classification. The IT6 mating surface has a high uniformity requirement, which can ensure a fairly high mating property, and is stable and reliable in use. It is equivalent to the old national standard level 2 shaft and level 1 precision hole. It is widely used in important coordination in machinery. For example, inspection IT12 to IT15-level workpiece gauges and calibration gauges for calibration IT15 to IT16-level shaft gauges; housing holes matched with E-level bearings and machine tool spindle journals matched with roller bearings, assembled bronze worm wheels and wheel housing outer diameters in machine tool manufacturing Install gears, worm gears, couplings, pulleys, and cam journals;