High-power fans typically use shaft coupler drives. This component, adept at transmitting torque and rotational motion while cushioning shock and adapting to unbalanced loads, enhances the mechanical coupling between a high-power motor and fan, boosting transmission efficiency and reliability.

Compared with direct drive, shaft coupler drive offers:

1. Shock absorption: The coupler can absorb some unbalanced loads and movement impacts, mitigating their impact on motors and fans.

2. Ease of adjustment and maintenance: The coupler allows for easy disassembly and installation of motors for repair or replacement.

3. Speed regulation: By adjusting the length of the coupler, one can adjust the speed ratio between the driving motor and fan.

In summary, shaft coupler drive is often preferred for high-power fans as it provides superior mechanical connection and adaptability to various load conditions.