| B | Backlash | The play that exists between the contacting surfaces of mechanical elements. Backlash is the cause of vibration. Backlash in roller gear and parallel cams can be eliminated by pre-loading. |
|---|---|---|
| Barrel Cam | A cylinder-shaped solid cam used to produce intermittent indexing and oscillating motions. | |
| Bell Cam, End Cam | A cam that uses the end of its cylinder. | |
| Bottom Dead Point | See Top Dead Point. |






