I am the type of pulley that changes position.

I am the part of the spur gear that makes other gears turn.

My buddy and I are hears with slanted teeth. When we work together, we can turn vertical movement into horizontal movement.

I use a wheel and a rope or belt to lift loads.

I have a wheel with teeth that helps other wheels with teeth move.

I am the name of when a belt or chain connects 2 pulleys.

I am the name for more than one gear in a line