What does torque mean in gear systems?

What does torque mean in gear systems?

• A. The rotational speed the output achieves
• B. The force required to move the gear
• C. The rotational force the gears transfer
• D. The heat generated by gears

Answer: (C)

Torque is the twisting turning force that moves things in a rotation. In a gear system it’s the rotational force transmitted from one gear to the next. When you apply a turning effort to the input gear, the gear teeth transfer that effort and create a turning moment on the output gear. The amount of torque at the output depends on the gear sizes: a small driving gear turning a larger driven gear increases the output torque (but lowers output speed), while a large driving gear turning a smaller driven gear decreases torque and increases speed. The basic relation is torque equals the tangential force at the pitch circle times the radius, so using the same force farther from the center boosts the twisting effect. Torque is the rotational force, not the rotational speed or heat.

Torque is the twisting turning force that moves things in a rotation. In a gear system it’s the rotational force transmitted from one gear to the next. When you apply a turning effort to the input gear, the gear teeth transfer that effort and create a turning moment on the output gear. The amount of torque at the output depends on the gear sizes: a small driving gear turning a larger driven gear increases the output torque (but lowers output speed), while a large driving gear turning a smaller driven gear decreases torque and increases speed. The basic relation is torque equals the tangential force at the pitch circle times the radius, so using the same force farther from the center boosts the twisting effect. Torque is the rotational force, not the rotational speed or heat.