Pololu Ball Caster with 1″ Plastic Ball and Ball Bearings

This ball castor uses a 1″ diameter plastic ball and has an overall height of 1.1″ (29 mm). The two-part housing snaps together to securely enclose the ball and three ball bearings that minimise friction between the ball and the ABS housing.

AUD$ 9.95

In stock in Australia  

We can ship 270 more in 7-10 days

Our Code: SKU-003361

Supplier Link: [Pololu MPN:2692]


Description

This ball castor is an improved version of our original Pololu Ball Castor with 1″ Plastic Ball; we 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)

Overview

This ball castor 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 castor 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.

Components of the Pololu Ball Caster with 1″ Plastic Ball and Ball Bearings: two-part housing, three ball bearings and dowel pins, and a 1″ plastic ball

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 castor has an overall height of 1.1″ (29 mm).

Pololu Ball Caster with 1″ Plastic Ball and Ball Bearings (1)

Pololu Ball Caster with 1″ Plastic Ball, mounting-side view

This ball castor 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 castor
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
0.91″ 0.24″ 0.25 oz
0.83″ 0.61″ 1.05 oz
1″ plastic ball, ball bearings
1.10″ 0.48″ 0.65 oz
1.10″ 0.48″ 0.58 oz
1.10″ 0.70″ 0.36 oz


Specifications

Dimensions

Ball diameter: 1 in
Weight: 18.5 g

General specifications

Ball material: plastic

Resources

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