Choosing the right AC gear motor: Have you considered the profound impact of load characteristics on motor performance?

Loads can generally be divided into the following categories:
1. Constant load
Constant load means that the load changes little during the working process, and usually requires the motor to continuously output constant power and torque. For example, pumps and fans are often under constant load.
2. Variable load
A variable load is one where the load fluctuates significantly and the motor needs to cope with the changes in load. In this case, the motor needs to have better regulation capabilities to cope with increases or decreases in load. For example, the load of equipment such as winches and conveyor belts will change with the change of materials.
3. Shock load
Shock load refers to a sudden change in load within a short period of time, which is common in applications such as power tools and lifting machinery. This type of load requires the motor to have a very high instantaneous torque capability to withstand the sudden and drastic changes in load.
4. Start the load
The startup load refers to the instantaneous load when the equipment starts up, which is usually higher than the working load. Motors may require additional starting torque to overcome initial static friction and inertia when starting, especially with heavy equipment and machinery.

How to select AC gear motor according to load characteristics
1. Selection of constant load
If the load is relatively stable, the motor selection is relatively simple. At this point, just select a motor that meets the rated power and torque requirements to ensure that the motor can continuously output sufficient torque and power under load. However, even with a constant load, possible load fluctuations and the temperature rise of the motor should be considered. It is recommended to select a motor with a certain margin to prevent sudden increase in load.
Key considerations:
Rated power matches load power
Ensure that the motor can run smoothly for a long time and avoid overheating

2. Selection of variable loads
For applications with large load fluctuations, the load variation range and whether the motor can provide sufficient power when the load changes should be considered when selecting the motor. At this time, the motor needs to have higher speed regulation performance, good torque characteristics and a wider load adaptability range.
Key considerations:
The starting torque and rated torque of the motor must be able to meet the maximum fluctuation of the load
You need to pay attention to the motor's speed regulation capability to avoid excessive voltage fluctuations affecting performance
If the load fluctuates greatly, choose a motor with a higher overload capacity.

3. Selection of impact load
For impact loads (such as robotic arms, cranes, etc.), the motor needs to provide a torque far higher than the rated power in a short period of time. When selecting a motor, special attention should be paid to the motor's overload capacity, starting characteristics, and instantaneous torque output. At this time, when selecting a motor, make sure that it can output a large torque in an instant without causing damage.
Key considerations:
The starting torque and instantaneous maximum torque of the motor must be able to meet the load requirements
A motor with strong overload capacity should be selected to avoid damage to the motor due to instantaneous load impact.
Consider using a motor system with a soft start function or a mechanical shock absorber to reduce the impact of shock loads.
4. Selection of starting load
When the equipment is started up, the load is usually large. The load torque at startup may be several times that in the working state, so the motor must have a higher starting torque to ensure smooth starting of the equipment. In this case, special attention should be paid to the starting characteristics of the motor when selecting the motor.
Key considerations:
Make sure the motor's starting torque is higher than the maximum starting load
The current demand during startup should be within the range that the power grid can bear.
Consider choosing a motor with startup protection and soft starter to reduce the impact on the motor and equipment.

5. Impact of load characteristics on gearbox
When selecting an AC gear motor, the load characteristics not only affect the choice of the motor, but also the design and selection of the gearbox. The design of the gearbox must take into account the effect of the load type on the gears. For variable loads or impact loads, the gearbox needs to have strong impact resistance to ensure its long-term stable operation.
Key considerations:
For variable loads, the gearbox needs to have higher load-bearing capacity and impact resistance.
For impact loads, the gear material and tooth design of the gearbox should be able to withstand sudden load impacts.
Select an efficient gear ratio to ensure that the speed and torque output by the motor match the load requirements and avoid overloading the gearbox.

Common solutions
1. Overload protection: For variable loads and impact loads, a common solution is to use the motor's overload protection function, such as an overload protector, thermal protector, etc., to prevent the motor from being damaged when the load exceeds the predetermined range.
2. Speed ​​regulation function: For variable loads, the use of speed regulation devices such as variable frequency drives (VFDs) can better match the motor speed and output torque to the load requirements, thereby improving system efficiency and stability.
3. Soft starter: For occasions with large starting loads, use a soft starter to control current fluctuations during motor starting to avoid damage to the motor due to sudden load shocks.

Ningbo Zhongda Leader Intelligent Transmission Co., Ltd. is committed to providing precisely matched motor solutions. With rich industry experience and professional technical support, our AC gear motors can perfectly adapt to various load characteristics and meet your different application needs. Whether it is variable load, impact load or high-frequency starting requirements, we can provide you with efficient and reliable drive systems to make your production line run more smoothly and efficiently. Choose us and choose industry-leading technical support.