Pololu Ball Caster with 1″ Plastic Ball (old version)

Pololu item #: 956 56 in stock
Brand: Pololu
Status: Active 
RoHS 3 compliant
This item could qualify for free shipping Free shipping in USA over $60 

Price break Unit price (US$)
1 4.99
10 4.49
50 3.99


backorders allowed

This light ball caster uses a 1″ diameter plastic ball. The height of the assembled kit ranges from 1.1″ to 1.4″, depending on the combination of included spacers used. Included dowel pins can be used to reduce the friction between the ball and the ABS housing, but they are not necessary for operation.

Alternatives available with variations in these parameter(s): ball diameter ball material Select variant…

 Description Specs (3) Pictures (4) Resources (0) FAQs (1) On the blog (0) 

Note: We have released an improved ball caster with 1″ plastic ball that we 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 or with ball bearings and it holds the ball more securely.

Pololu 1" ball caster (old version) with included hardware.

Overview

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 and three 1″ #2 screws (and three nuts) 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 our 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.

   


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″ Metal Ball Pololu Ball Caster with 3/4″ Metal Ball
Pololu Ball Caster with 3/8″ Metal Ball Pololu Ball Caster with 3/8″ Metal Ball
Pololu Micro Metal Gearmotor Bracket Extended Pair Pololu Micro Metal Gearmotor Bracket Extended Pair

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Machine Screw: #2-56, 7/16″ Length, Phillips (25-pack)
Machine Screw: #2-56, 1″ Length, Phillips (25-pack)
Machine Hex Nut: #2-56 (25-pack)

Related Categories

Pololu Ball Casters
Nuts and Screws
Pololu Wheels and Tracks
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