Pololu Ball Caster with 1/2" Plastic Ball

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SKU: POLOLU-952 Brand: Pololu

This light ball caster uses a 1/2" diameter plastic ball. The height of the assembled kit ranges from 0.5" to 0.8".

$4.20 AUD, inc GST

$3.82 AUD, exc GST

In stock, ships same business day if ordered before 2PM
Delivered by Tue, 24th of Dec

Quantity Discounts:

10-25 $3.66 (exc GST)
25+ $3.55 (exc GST)

Pololu ball caster with 1/2" plastic ball with included hardware.

This ball caster kit includes a black ABS housing, a 1/2" diameter plastic ball, two spacers (1/16" and 1/8" thick), and two 7/16" #2 screws and nuts. The total height of the ball caster, 0.53", can be increased to about 0.7" 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 (162k 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
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	0.88"	0.24"	0.25 oz
3/4" metal ball	0.82"	0.61"	1.05 oz
1" plastic ball, ball bearings	1.10"	0.48"	0.65 oz
1" plastic ball, plastic rollers	1.10"	0.48"	0.58 oz
1" plastic ball (old version)	1.10"	0.70"	0.36 oz

People often buy this product together with:

Pololu Ball Caster with 3/8" Plastic Ball

Pololu Ball Caster with 3/8" Metal Ball

Pololu Ball Caster with 1/2" Metal Ball

Dimensions

Ball diameter:	0.5 in
Weight:	2 g¹

General specifications

Ball material:	plastic

Notes:

1: Without screws or spacers.

File downloads

Dimension diagram of the Pololu Ball Caster with 1/2" Ball (162k pdf)
3D model of the Pololu Ball Caster with 1/2" Ball (2MB step)

This product is listed in:

Hardware>Wheels>Casters

Product Comments

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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):

$3+ for Stamped Mail (typically 10+ business days, not tracked, only available on selected small items)
$7+ for Standard Post (typically 6+ business days, tracked)
$11+ for Express Post (typically 2+ business days, tracked)
Pickup - Free! Only available to customers who live in the Newcastle region (must order online and only pickup after we email to notify you the order is ready). Orders placed after 2PM may not be ready until the following business day.

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:

$12+ for Pack and Track (3+ days, tracked)
$16+ for Express International (2-5 days, tracked)

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.

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