Available with a lead time
Expect dispatch between Feb 17 and Feb 18
Quantity Discounts:
This ball caster is an improved version of Pololu's original Pololu Ball Caster with 1" Plastic Ball; Pololu recommend this new version over the older version for all applications that are not somehow specifically tied to the previous design.
![]() |
Assembling the Pololu Ball Caster with 1" Plastic Ball and Ball Bearings (screws not included). |
---|
This ball caster kit includes a two-part black ABS housing, a 1" diameter POM (also know as acetal or by the brand name Delrin) plastic ball, three 3×7×3mm ball bearings, and three dowel pins used to hold the ball bearings. When assembled, the ball caster is capable of rolling in any direction with low friction, making it suitable for use as a third contact point for wheeled, differential-drive robots weighing up to around ten pounds.
![]() |
The base piece of the housing has holes for three #4 or M3 mounting screws (not included) and slots for ball bearings. The second part of the housing snaps into the base piece to secure the ball and ball bearings. The assembled ball caster has an overall height of 1.1" (29 mm).
|
|
This ball caster is also available with plastic rollers instead of ball bearings.
Dimensions
![]() |
Dimensions of the Pololu Ball Caster with 1" Plastic Ball and Ball Bearings. Units are mm over [inches]. |
---|
This dimension diagram is also available as a downloadable PDF (134k pdf).
Comparison of Pololu ball casters
![]() |
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 |
0.40" | 0.53" | 0.03 oz | |
0.40" | 0.53" | 0.14 oz | |
0.53" | 0.58" | 0.07 oz | |
0.53" | 0.58" | 0.32 oz | |
0.88" | 0.24" | 0.25 oz | |
0.82" | 0.61" | 1.05 oz | |
1.10" | 0.48" | 0.65 oz | |
1.10" | 0.48" | 0.58 oz | |
1.10" | 0.70" | 0.36 oz |
People often buy this product together with:
![]() | Pololu Ball Caster with 3/4" Plastic Ball |
![]() | Pololu Ball Caster with 3/4" Metal Ball |
Pololu Micro Metal Gearmotor Bracket Pair - Black |
Dimensions
Ball diameter: | 1 in |
---|---|
Weight: | 18.5 g |
General specifications
Ball material: | plastic |
---|
File downloads
Exact shipping can be calculated on the view cart page (no login required).
Products that weigh more than 0.5 KG may cost more than what's shown (for example, test equipment, machines, >500mL liquids, etc).
We deliver Australia-wide with these options (depends on the final destination - you can get a quote on the view cart page):
Non-metro addresses in WA, NT, SA & TAS can take 2+ days in addition to the above information.
Some batteries (such as LiPo) can't be shipped by Air. During checkout, Express Post and International Methods will not be an option if you have that type of battery in your shopping cart.
International Orders - the following rates are for New Zealand and will vary for other countries:
If you order lots of gear, the postage amount will increase based on the weight of your order.
Our physical address (here's a PDF which includes other key business details):
Unit 18, 132 Garden Grove Parade
Adamstown
NSW, 2289
Australia
Take a look at our customer service page if you have other questions such as "do we do purchase orders" (yes!) or "are prices GST inclusive" (yes they are!). We're here to help - get in touch with us to talk shop.
Have a product question? We're here to help!
Makers love reviews as much as you do, please follow this link to review the products you have purchased.
Product Comments