PololuPololu· Mechanics & transmission
Replacement 3pi Ball Caster with 1/2″ Plastic Ball
Manufacturer part no. 957
$2.95≈ 2.59 €
Price summary
Listed by Pololu at €2.59. Delivered to France, including shipping, VAT and any customs duty, it comes to about €33.11. Prices last checked on 2026-09-29.
Delivered cost is an estimate for a single item shipped to mainland France; the seller's checkout is authoritative.
In stock — 32 units
- origin China
- RoHS3
Estimated landed cost
| Item | €2.59 |
|---|---|
| Shipping | €25.00 |
| VAT (20%) | €5.52 |
| Total delivered | €33.11 |
Estimate for a single item delivered to mainland France, shipped from outside the EU: customs duty and clearance fees may apply and are charged by the carrier.
Volume pricing
| Qty | Unit price | Saving |
|---|---|---|
| ≥ 1 | $2.95 | |
| ≥ 10 | $2.65 | −10 % |
| ≥ 50 | $2.36 | −20 % |
Specifications (automatically extracted)
Mechanical
| Weight | 2 g |
Other characteristics
| Ball diameter | 0.5 in |
| Ball material | plastic |
Description
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.
