Which of the following is a consideration when designing motor hubs?

• A. Attach the hub to the motor
• B. How to attach to the wheel
• C. Torque transfer
• D. All of the above

Answer: (D)

Designing a motor hub centers on creating a robust interface at three functional points: how the hub attaches to the motor shaft, how it attaches to the wheel, and how torque is transferred from the motor to the wheel. The motor-to-hub attachment must be rigid so there’s no slip under load and the shaft torque is transmitted cleanly. The hub-to-wheel connection must be secure and properly aligned to prevent wobble, slippage, or detachment during operation. The torque-transfer method must handle the expected torque, maintain concentricity, and resist loosening under vibration and wear. Because these aspects together determine reliability, performance, and safety, all of these considerations are essential, making all of the above the best answer.