Washer-type bearing fixation: Install the bearing on the shaft, then add washers at both axial ends and fix it with nuts. By gradually tightening the nut, the bearing is in optimal motion. This method requires finally using a torque wrench to tighten the nut to the specified torque value.
Card sleeve bearing fixation: Install the bearing on the machine part, leaving a certain distance at both axial ends, and place the clamp sleeve and axial ends next to the bearing respectively. Then, use a booster or oil pressure to squeeze the ferrules to both ends of the bearing to install and fix the bearing.
Shaft shoulder fixation: Fixation is achieved by utilizing the contact between the steps on the shaft and the inner ring of the bearing. This method is simple and reliable, but it needs to ensure that the diameter of the shaft shoulder matches the diameter of the bearing inner ring to ensure good contact.
Axial fixation: The reducer shaft is fixed through the bearing seat or pressure plate. This method is suitable for larger loads and higher speeds, but it needs to ensure the installation accuracy and tightness of the bearing seat or pressure plate.
Retaining ring fixation: The elasticity and tightening force of the elastic retaining ring are used to fix the reducer shaft. This method is also suitable for higher rotational speeds and larger loads, but the size and quality of the elastic retaining ring need to be ensured.
Lock nut fixation: Use the locking force of the lock nut to fix the reducer shaft. This method is also simple and reliable, but it needs to ensure the installation accuracy and tightness of the lock nut.
In addition, there are two methods for fixing the shaft system: fixing both ends of the shaft system and fixing one end of the shaft system and moving the other end. The two ends of the shaft system are often fixed with external bearing end caps or embedded bearing end caps. This method has a simple structure and is easy to use. The method of having one end of the shaft fixed and one end swimming is mostly used in shaft systems with larger bearing fulcrum spans and higher temperature rises.
When choosing a specific fixing method, factors such as the type of reducer, application scenario, load requirements, and installation accuracy need to be considered. Different fixation methods have their own characteristics and applicable scenarios, so you need to choose according to the specific situation.
