In my work, explosion-proof motors have always been an inescapable topic, and the YBX series explosion-proof motors are particularly the focus of attention in the industry. As a motor professional, I am often asked: "What on earth are the differences between YBX4 and YBX3 explosion-proof motors?" Today, from my own perspective, I will talk in detail about the differences between these two types of motors in terms of design, performance, and application fields. At the same time, I will also reflect on the relevant experience of our company, Xi'an Simo Motor.
- Design Upgrade: YBX4 Places Greater Emphasis on Efficiency and Energy Conservation.

The YBX4 explosion-proof motor is an iterative product of the YBX3, and the most significant design improvement is reflected in the energy efficiency standard. The YBX3 explosion-proof motor meets the national second-level energy efficiency standard, while the YBX4 has fully entered the ranks of first-level energy efficiency. This upgrade not only meets the country's higher requirements for energy conservation and emission reduction but also shows lower energy consumption in practical applications. For example, when we were helping a coal mine customer select an explosion-proof motor, we found that the YBX4 motor could save more than 10% of the annual electricity bill compared to the YBX3 motor of the same power. This is a considerable expense reduction for large mining enterprises.
In addition, the YBX4 also has a more optimized structural design. The strength of its housing material has been further improved, enabling it to better cope with complex industrial environments, especially harsh conditions such as high temperature, high humidity, and high dust. This is also reflected in the products of our Xi'an Simo Motor. The housing of our YBX4 explosion-proof motor uses materials with stronger corrosion resistance, providing customers with more durable equipment reliability.
- Performance: YBX4 has Superior Stability
From the perspective of performance, both the YBX4 and YBX3 have excellent explosion-proof capabilities, but the YBX4 has more obvious advantages in details. For example, the YBX4 motor uses the latest insulation materials and a higher-grade motor winding process, which greatly improves its voltage resistance and impact resistance. This is particularly important for some application scenarios that require frequent start-stop operations or have extremely harsh working environments.
For instance, a customer once reported that their YBX3 motor occasionally had the problem of excessive temperature rise during high-frequency starting. Later, we recommended that they try the YBX4 motor and found that this phenomenon was significantly reduced, and the equipment operation was more stable. This experience has made me deeply aware of the important impact of technological improvements on industrial production.
In addition, the YBX4 motor also has better noise control and vibration suppression than the YBX3. In many scenarios involving personnel work, such as in the petrochemical and natural gas fields, the YBX4 can significantly improve the working environment and reduce noise pollution.
- Application Fields: YBX4 Expands More Application Possibilities
Although both the YBX3 and YBX4 are widely used in industries such as coal mines, chemicals, and petroleum, due to the improvement of performance, the YBX4 can enter more subdivided fields with strict requirements for equipment. For example, the YBX4 is more suitable for scenarios that require continuous operation and have higher safety requirements, such as oilfield drilling platforms and special gas transportation pipelines.
As a member of Xi'an Simo Motor, we pay special attention to the special needs of customers and provide customized YBX4 solutions. Once, our team assisted an overseas customer in installing dozens of YBX4 explosion-proof motors in a natural gas transportation project, successfully solving the problems of overheating and high maintenance frequency during long-term operation. This customization ability is also a major advantage of our Simo Motor, truly making customers feel the high degree of fit between the equipment and their needs.
My Conclusion: How to Choose the Right Explosion-proof Motor?
If you are hesitating between choosing the YBX3 or YBX4 explosion-proof motor, my advice is to start from the following aspects:
Energy Efficiency and Cost: If an enterprise focuses on energy conservation and consumption reduction and is willing to invest for long-term benefits, the YBX4 is a better choice.
Environmental Requirements: In complex working environments, the YBX4's durability and impact resistance will have more advantages.
Performance Requirements: For equipment that requires high-frequency starting or long-term stable operation, the YBX4 performs more outstandingly.
As a member of Xi'an Simo Motor, I am proud that we can provide customers with high-quality YBX4 explosion-proof motors. We always take customer needs as the guiding principle and combine cutting-edge industry technologies to help every customer find the most suitable solution. Whether you are engaged in the coal mine, power, or petrochemical industry, Simo Motor can provide you with reliable products and services. If you have any questions, please feel free to contact us. I am happy to answer your questions!