This ball castor was originally released as a replacement part for the 3pi robot , but the 1/2″ ball can also be used a replacement part for the newer 3pi+ robot , which has the housing for the ball built directly into the chassis.
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This ball caster was originally released as a replacement part for the 3pi robot, but the 1/2″ ball can also be used a replacement part for the newer 3pi+ robot, which has the housing for the ball built directly into the chassis. This ball caster can also be used as a general-purpose ball caster: when mounted through a hole in a chassis that uses our micro metal gearmotors and our 32×7mm wheels, as on the 3pi, this ball caster is just the right height to keep the chassis level.
3pi ball caster with 1/2" plastic ball. (1)
This ball castor was originally released as a replacement part for the 3pi robot, but the 1/2″ ball can also be used a replacement part for the newer 3pi+ robot, which has the housing for the ball built directly into the chassis. This ball castor can also be used as a general-purpose ball castor: when mounted through a hole in a chassis that uses our micro metal gearmotors and our 32×7mm wheels, as on the 3pi, this ball castor is just the right height to keep the chassis level. The hole for this ball castor in the 3pi chassis has a diameter of 600 mils (0.6″) and has a side that is flattened by 30 mils (0.03″).
To replace the ball castor on your original 3pi, you will need to unscrew the rear battery holder (pull off the LCD and remove the batteries to access the screw) and gently bend the holder far enough out of the way to pull out the existing ball castor and slip in the new one. The battery holder is soldered to the 3pi PCB chassis on one side, so you will not be able to fully remove the battery holder. Take care not to lose the plastic spacer that is underneath the holder.
To replace the ball on your 3pi+ robot, simply pop the existing one out of the socket on the chassis and pop the ball included with this product in instead.
Note: This ball castor does not have mounting holes and includes no mounting hardware or spacers.
Dimension diagram 3pi ball caster with 1/4" ball (bottom view). |
Dimension diagram 3pi ball caster with 1/4" ball (side view). |
| Ball diameter: | 0.5 in |
|---|---|
| Weight: | 2 g |
| Ball material: | plastic |
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