# Pololu Ball Caster with 3/4" Plastic Ball

**Type:** Product page · **SKU:** POLOLU-954 · **Brand:** [Pololu](https://core-electronics.com.au/brands/pololu-australia)
**Page:** https://core-electronics.com.au/pololu-ball-caster-with-3-4-plastic-ball.html ([markdown](https://core-electronics.com.au/pololu-ball-caster-with-3-4-plastic-ball.html.md))

This light ball caster uses a 3/4" diameter plastic ball. The height of the assembled kit ranges from 0.9" to 1.2". Dowel pins are used to minimize the friction between the ball and the ABS housing.

## Pricing

- **Price:** $8.65 (inc GST) — $7.86 AUD, exc GST
- **Quantity discounts:** 10+ $7.55 (exc GST) · 25+ $7.31 (exc GST)

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 2 today, and up to 300 more in 4–7 days.

## Description

| [![](https://core-electronics.com.au/attachments/localcontent/0J9807_728766aca6.jpg)](https://core-electronics.com.au/attachments/localcontent/0J9807_55311cbf68c.jpg) |
|---|
| Pololu ball caster with 3/4" plastic ball with included hardware. |

This ball caster kit includes a black ABS housing, a 3/4" diameter plastic ball, three dowel pin rollers, two spacers (1/16" and 1/8" thick), and two [7/16" #2 screws](https://core-electronics.com.au/machine-screw-2-56-7-16-length-phillips-25-pack.html) and [nuts](https://core-electronics.com.au/machine-hex-nut-2-56-25-pack.html). The total height of the ball caster, 0.88", can be increased to about 1.1" using the included spacers. The two included #2 screws can be used to mount the ball caster to your chassis, or you can use your own #2 or M2 screws if your application requires a different length.

Note that Pololu's ball casters are designed for small robots; they are not intended to bear more than a few pounds. With more weight than this, friction between the ball and the housing will generally keep it from rolling well.

For detailed dimensions, see the dimension diagram (159k pdf).

**Comparison of Pololu ball casters**

| [![](https://core-electronics.com.au/attachments/localcontent/0J6616_206725e12f0.jpg)](https://core-electronics.com.au/attachments/localcontent/0J6616_15804c1ec4a.jpg) |
|---|
| Pololu ball casters with plastic and metal balls. Ball diameter from left to right: 1", 3/4", 1/2", and 3/8". |

| Pololu ball caster   ball diameter | height with  no spacers | distance between screw holes | weight with no spacers or screws |
|---|---|---|---|
| [3/8" plastic ball](https://core-electronics.com.au/pololu-ball-caster-with-3-8-plastic-ball.html) | 0.40" | 0.53" | 0.03 oz |
| [3/8" metal ball](https://core-electronics.com.au/pololu-ball-caster-with-3-8-metal-ball.html) | 0.40" | 0.53" | 0.14 oz |
| [1/2" plastic ball](https://core-electronics.com.au/pololu-ball-caster-with-1-2-plastic-ball.html) | 0.53" | 0.58" | 0.07 oz |
| [1/2" metal ball](https://core-electronics.com.au/pololu-ball-caster-with-1-2-metal-ball.html) | 0.53" | 0.58" | 0.32 oz |
| [3/4" plastic ball](https://core-electronics.com.au/pololu-ball-caster-with-3-4-plastic-ball.html) | 0.88" | 0.24" | 0.25 oz |
| [3/4" metal ball](https://core-electronics.com.au/pololu-ball-caster-with-3-4-metal-ball.html) | 0.82" | 0.61" | 1.05 oz |
| [1" plastic ball, ball bearings](https://core-electronics.com.au/pololu-ball-caster-with-1-plastic-ball-and-plastic-rollers-46014.html) | 1.10" | 0.48" | 0.65 oz |
| [1" plastic ball, plastic rollers](https://core-electronics.com.au/pololu-ball-caster-with-1-plastic-ball-and-plastic-rollers.html) | 1.10" | 0.48" | 0.58 oz |
| [1" plastic ball (old version)](https://core-electronics.com.au/pololu-ball-caster-with-1-plastic-ball.html) | 1.10" | 0.70" | 0.36 oz |

**People often buy this product together with:**

| [![Pololu Ball Caster with 3/8](https://core-electronics.com.au/attachments/localcontent/0J9801_23343c330c.jpg)](https://core-electronics.com.au/pololu-ball-caster-with-3-8-plastic-ball.html) | [Pololu Ball Caster with 3/8" Plastic Ball](https://core-electronics.com.au/pololu-ball-caster-with-3-8-plastic-ball.html) |
|---|---|

| [![Pololu Ball Caster with 1/2](https://core-electronics.com.au/attachments/localcontent/0J9810_2216be9254.jpg)](https://core-electronics.com.au/pololu-ball-caster-with-1-2-plastic-ball.html) | [Pololu Ball Caster with 1/2" Plastic Ball](https://core-electronics.com.au/pololu-ball-caster-with-1-2-plastic-ball.html) |
|---|---|

| [![Pololu Ball Caster with 3/4](https://core-electronics.com.au/attachments/localcontent/0J9804_2259968468.jpg)](https://core-electronics.com.au/pololu-ball-caster-with-3-4-metal-ball.html) | [Pololu Ball Caster with 3/4" Metal Ball](https://core-electronics.com.au/pololu-ball-caster-with-3-4-metal-ball.html) |
|---|---|

**Dimensions**

 | Ball diameter: | 0.75 in |
|---|---|
| Weight: | 7 g[1](https://core-electronics.com.au/#note1) |

**General specifications**

 | Ball material: | plastic |
|---|---|

**Notes:**

1Without screws or spacers. **File downloads**

- **Dimension diagram of the Pololu Ball Caster with 3/4" Plastic Ball (159k pdf)**
- **3D model of the Pololu Ball Caster with 3/4" Plastic Ball (2MB step)**

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/p/o/pololu_ball_caster_with_3_4_inch_plastic_ball__pololu_954__00.jpg)