BM1 Vs BM2 Hydraulic Motor: What’s The Difference And How To Choose The Right Orbital Motor?

BM1 vs BM2 Hydraulic Motor: What’s the Difference and How to Choose the Right Orbital Motor?

In the world of hydraulic transmission, BM1 and BM2 hydraulic motors are two widely used types of orbital motors. Each has unique design features, displacement capacities, output characteristics, and speed ranges. Understanding the key differences between these two models is critical when selecting the best hydraulic motor for your equipment—whether you're in agriculture, construction, or sanitation machinery.

In this article, we’ll compare BM1 vs BM2 hydraulic motors across five key dimensions: displacement, design, output characteristics, speed range, and application scenarios. This will help you make a smarter decision when choosing the most suitable orbital hydraulic motor for your needs.

1. Displacement: BM1 vs BM2 Hydraulic Motors

The BM1 hydraulic motor is typically designed with a small displacement, making it ideal for light-duty applications where high speed and low torque are required—such as in compact sweepers or lawn mowers.

In contrast, the BM2 hydraulic motor comes with a larger displacement, enabling it to deliver higher torque at lower speeds. It is well-suited for heavy-duty applications that require stronger power output, such as agricultural and construction equipment.

Tip: Selecting the appropriate displacement ensures optimal motor efficiency and reduces unnecessary energy consumption.

2. Structural Design Differences

The BM2 orbital motor is usually equipped with reinforced bearings, allowing it to handle higher loads and harsh operating environments. It’s ideal for machinery that operates under heavy-duty conditions, such as excavators and tractors.

On the other hand, the BM1 motor features a more compact and lightweight design, offering a more cost-effective solution for medium to light-duty tasks. This makes BM1 a preferred choice for equipment with limited load demands.

3. Output Characteristics

The BM1 hydraulic motor is optimized for medium to high speeds with lower torque output, which suits applications where high torque is not a priority.

The BM2 motor, however, delivers higher torque under the same pressure, making it more suitable for heavy machinery. If your application requires high torque and powerful startup performance, the BM2 is the better fit.

For example: In road rollers or harvesting machines, BM2 motors provide the torque needed to keep the equipment performing efficiently.

4. Speed Range Comparison

BM1 motors are tailored for medium to high-speed requirements, performing well in light-duty applications that need quick motion.

BM2 motors, in contrast, are built for low-speed, high-torque conditions. Their excellent startup torque makes them ideal for machinery that must handle large loads at slow speeds—such as winches, augers, or conveyors.

Conclusion: Choose BM1 for speed, BM2 for torque.

5. Application Scenarios

The choice between BM1 and BM2 hydraulic motors depends heavily on your application:

• BM1 Hydraulic Motor:

• Lightweight and economical

• Ideal for small sweepers, mowers, or other light-duty machines

• Best for high-speed, low-load environments

• BM2 Hydraulic Motor:

• Built for heavy machinery and demanding environments

• Perfect for tractors, excavators, forestry machines, and more

• Maintains performance under tough working conditions

Final Thoughts: How to Choose the Right Orbital Hydraulic Motor?

To summarize:

• Use BM1 orbital motors for lightweight, high-speed, low-torque applications.

• Choose BM2 motors when you need low-speed, high-torque performance for heavy machinery.

Understanding the difference between BM1 and BM2 hydraulic motors allows you to select the best motor for your working conditions. The right motor can boost productivity, reduce energy costs, and extend equipment lifespan.

Still not sure which motor suits your needs? Contact us for personalized technical advice and customized hydraulic solutions.