| A | B |
|---|
| Belt Drive | A system that consists of two fixed pulleys connected by a belt. One pulley is powered by something external and energy is transferred to the second pulley by means of the belt.,  |
| Bevel Gear | One of a pair of gears used to connect two shafts whose axes intersect at a 90° angle.,  |
| Cam & Follower | A pear-shaped disk (cam) with an off-center pivot point, used to change rotating motion into reciprocating motion.,  |
| Crank & Slider | A mechanism with a pivot pin that changes reciprocating motion into rotary motion or rotary motion into reciprocating motion.,  |
| Crown & Pinion | A small cogwheel (pinion gear) that engages or is engaged by a larger cogwheel (crown gear). A set of gears that mesh at an angle.,  |
| Drive Gear | The gear that receives energy from the power source and then transmits power and motion to the rest of the system. The input gear. |
| Driven Gear | The gear that receives power and motion from the drive gear. The output gear. |
| Energy | The ability or power to do work. |
| Force | A power that produces movement in a straight line, a push or pull on an object. |
| Gear | A toothed wheel that works with others to alter the torque or speed or direction of mechanical energy. |
| Gear Ratio | The ratio of the speed of the driving member of a gear train to that of the driven member. The comparison of the drive gear and driven gear. |
| Gear Train | A combination of two or more gears.,  |
| Idler Gear | A gear between the driver and the driven gear used to change rotational direction. |
| Input | Something put into a system, such as resources, in order to achieve a result. |
| Inverse | Opposite in position, direction, order or effect. |
| Lead Screw | A threaded shaft used to convert rotary movement to linear movement.,  |
| Linear Motion | Movement in a straight line (only one direction). |
| Mechanism | A device that transmits movements so that the output movement is different than the input movement. It can change direction, speed, force, and torque. |
| Meshed Gears | Gears that are touching and are interlocked. |
| Oscillate | A movement that swings back and forth. |
| Output | The results of the operation of any system. |
| Rack & Pinion | A rotating gear (pinion) that meshes with a linear gear (the rack) that changes rotating motion into linear motion.,  |
| Reciprocating | A back and forth movement. |
| Rotary Motion | Circular movement. |
| Torque | A power that produces movement in a circular direction, a twisting force. |
| Universal Joint | A type of joint that allows connected shafts freedom of angular movement in all directions. A joint that transmits rotation from one shaft to another shaft that is not collinear (not in a straight line).,  |
| Worm & Wheel | A toothed wheel gearing with a short revolving cylinder bearing a screw thread (worm).,  |
| Chain Drive | A system that consists of a roller chain that passes over a sprocket gear. The teeth of the gear meshes with the holes in the links of the chain.,  |
