Bearing Block: Another type of bearing used in the VEX Motion Subsystem is a Bearing Block; these are similar to the pillow- blocks used in industry. The Bearing Block mounts on a piece of structure and supports a shaft which is offset either above, below, or to the side of the structure.
Lock Bar: Another option to drive structural pieces using the Motion Subsystem is through a Lock Bar. These pieces are designed such that they can bolt onto any VEX structural component using the standard VEX 1/2" pitch. In the center of each piece there is a square hole which matches the VEX square shaft. As such, any VEX component can be locked to a shaft using the Lock Bar so that it will spin with the shaft. Note that the insert in each Lock Bar is removable and can be reinserted at any 15° increment.
Note: These items are not sold separately.