# Pololu Ball Caster with 1" Plastic Ball **Type:** Product page · **SKU:** POLOLU-956 · **Brand:** [Pololu](https://core-electronics.com.au/brands/pololu-australia) **Page:** https://core-electronics.com.au/pololu-ball-caster-with-1-plastic-ball.html ([markdown](https://core-electronics.com.au/pololu-ball-caster-with-1-plastic-ball.html.md)) This light ball caster uses a 1" diameter plastic ball. The height of the assembled kit ranges from 1.1" to 1.4". Dowel pins are used to minimize the friction between the ball and the ABS housing. ## Pricing - **Price:** $12.10 (inc GST) — $11.00 AUD, exc GST - **Quantity discounts:** 10+ $10.56 (exc GST) · 25+ $10.23 (exc GST) ## Availability & dispatch - Available with a lead time — expect dispatch between Aug 31 and Sep 02. ## Description **Note:** Pololu have released an improved ball caster with 1" plastic ball that Pololu recommend over this older version for applications that are not somehow specifically tied to this item #956 design. The new version is available [**with better plastic rollers**](https://core-electronics.com.au/pololu-ball-caster-with-1-plastic-ball-and-plastic-rollers.html) or [**with ball bearings**](https://core-electronics.com.au/pololu-ball-caster-with-1-plastic-ball-and-plastic-rollers-46014.html) and it holds the ball more securely. | [![](https://core-electronics.com.au/attachments/localcontent/0J9799_7402f8193b.jpg)](https://core-electronics.com.au/attachments/localcontent/0J9799_531433e2a92.jpg) | |---| | Pololu 1" ball caster (old version) with included hardware. | This ball caster kit includes a black ABS housing, a 1" diameter plastic ball, three dowel pin rollers, two spacers (1/16" and 1/8" thick), and mounting hardware. The total height of the ball caster, 1.1", can be increased to about 1.3" using the included spacers. The mounting hardware consists three [7/16" #2 screws](https://core-electronics.com.au/machine-screw-2-56-7-16-length-phillips-25-pack.html) and three [1" #2 screws](https://core-electronics.com.au/machine-screw-2-56-1-length-phillips-25-pack.html) (and three [nuts](https://core-electronics.com.au/machine-hex-nut-2-56-25-pack.html)) so you can pick the most appropriate length for your particular application. You can also use your own #2 or M2 screws if your application requires some other 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. | \| ![](https://core-electronics.com.au/attachments/localcontent/0J480_15166bc01d3.jpg) \| \|---\| | | \| ![](https://core-electronics.com.au/attachments/localcontent/0J481_7167f5362a.jpg) \| \|---\|---\|---\| | |---| **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/0J9812_25150e1b56.jpg)](https://core-electronics.com.au/pololu-ball-caster-with-3-8-metal-ball.html) | [Pololu Ball Caster with 3/8" Metal Ball](https://core-electronics.com.au/pololu-ball-caster-with-3-8-metal-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) | |---|---| | [![Pololu Micro Metal Gearmotor Bracket Extended Pair](https://core-electronics.com.au/attachments/localcontent/0J1130_2188a9638f.jpg)](https://core-electronics.com.au/pololu-micro-metal-gearmotor-bracket-extended-pair.html) | [Pololu Micro Metal Gearmotor Bracket Extended Pair](https://core-electronics.com.au/pololu-micro-metal-gearmotor-bracket-extended-pair.html) | |---|---| **Dimensions** | Ball diameter: | 1 in | |---|---| | Weight: | 10 g[1](https://core-electronics.com.au/#note1) | **General specifications** | Ball material: | plastic | |---|---| **Notes:** 1Without screws or spacers. ## Images - [Product image 1](https://core-electronics.com.au/media/catalog/product/p/o/pololu_ball_caster_with_1_inch_plastic_ball__pololu_956__00.jpg)