Ball Casters
Our ball casters (often called ball transfers when used with the ball facing up) are great third contact points for small differential-drive robots. These units have larger ball diameter-to-weight ratios than industrial units, giving your robot the ability to drive over larger obstacles without adding too much weight.
These ball casters are intended for robots weighing up to a few pounds. The larger ball casters are not made for more weight but rather to allow greater obstacle clearance.
Comparison of Pololu ball casters
|
Pololu ball caster
ball diameter |
height with
no spacers |
distance
between screw holes |
weight with
no spacers or screws |
|
3/8" plastic-ball
|
0.40" | 0.53" | 0.03 oz |
|
3/8" metal-ball
|
0.40" | 0.53" | 0.14 oz |
|
1/2" plastic-ball
|
0.53" | 0.58" | 0.07 oz |
|
1/2" metal-ball
|
0.53" | 0.58" | 0.32 oz |
|
3/4" plastic-ball
|
0.91" | 0.24" | 0.25 oz |
|
3/4" metal-ball
|
0.83" | 0.61" | 1.05 oz |
|
1" plastic-ball
|
1.10" | 0.70" |
0.36 oz |
Sort By:
 Ball Caster with 1/2" Metal Ball 00118 $3.95 |
 Ball Caster with 1/2" Plastic Ball 00117 $3.95 |
 Ball Caster with 1" Plastic Ball 00121 $6.95 |
 Ball Caster with 3/4" Metal Ball 00120 $4.95 |
 Ball Caster with 3/4" Plastic Ball 00119 $5.95 |
 Ball Caster with 3/8" Metal Ball 00116 $2.95 |
 Ball Caster with 3/8" Plastic Ball 00115 $2.95 |
Showing 1 to 7 of 7 (1 Pages)
