The choice of right-angle planetary reducer should follow the principle of combining applicability with economy. That is to say, the technical indicators of the right-angle planetary reducer can meet the requirements of the equipment and save costs. “Over” and “Unreachable” will bring cost waste, so it is very important to use a right-angle planetary reducer correctly.
The right angle planetary reducer should be considered for its internal type such as structure type, bearing capacity, reduction ratio, output speed, axial force, radial force, torsional rigidity and backlash. It should also fully consider the installation form, working conditions and working environment. And other external structures. The following items are the most basic requirements for the gear unit, as follows:
1, installation size: the size of the front end of the servo motor. In the selection of a right-angle planetary reducer, the input of the right-angle planetary reducer must exactly match the size of the output of the servo motor.
2, reduction ratio: motor rated output revolutions per minute / reduction ratio = how many revolutions per minute of the reducer output, right angle planetary reducer should try to choose the ideal reduction ratio to ensure the desired speed.
3. Torque: rated output torque of servo motor (stepping motor is holding torque) * reduction ratio, the rated output rotation speed of the reducer must be greater than this value. If it is less than, the reduction gear will shorten the service life, and the shaft will be broken in severe cases. Or collapse.
4, backlash backlash: return gap (accuracy) → (right angle planetary reducer output shaft is divided into 360 degrees, one degree = 60 arc minutes) that is, we often say "arc points", unit: arcmin. The smaller the backlash, the higher the accuracy and the higher the cost. The user can select the reducer that meets the accuracy requirements. Also consider lateral/radial forces and average life. The reducer with large lateral/radial force is relatively reliable in installation and use, and it is not easy to cause problems. Usually the average life is much longer than the life of the servo motor.