A synchronous drive belt is commonly used in systems that require which attribute?

• A. Long travel
• B. Precise positioning
• C. High torque
• D. Low maintenance

Answer: (B)

Synchronous drive belts have teeth that mesh with the pulley, creating a positive, slip-free drive. This means that rotation of the pulley translates directly into belt movement with a fixed ratio, so the system can position a load exactly and repeatably. That precise, repeatable positioning is essential for applications like CNC machines and robotics, where small errors in position are unacceptable. The other attributes are not the primary advantage: long travel depends on the overall system rather than the belt type, high torque is limited by belt and pulley design, and maintenance needs are similar to other belt drives. So the best attribute this belt type provides is precise positioning.