Pololu Ball Caster with 3/4" Plastic Ball

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SKU: POLOLU-954 Brand: Pololu

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.

$8.20 AUD, inc GST

$7.45 AUD, exc GST

In stock, ships same business day if ordered before 2PM
Delivered by Tue, 26th of Nov

Quantity Discounts:

10-25 $7.15 (exc GST)
25+ $6.94 (exc GST)

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 and nuts. 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

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 1/2" Plastic Ball

Pololu Ball Caster with 3/4" Metal Ball

Dimensions

Ball diameter:	0.75 in
Weight:	7 g¹

General specifications

Ball material:	plastic

Notes:

1: Without 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)

This product is listed in:

Hardware>Wheels>Casters

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Unit 18, 132 Garden Grove Parade
Adamstown
NSW, 2289
Australia

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