# Ball bearing N20, universal wheel

> Metal ball caster support for robots, used as a third support point on platforms with two drive wheels, allowing smooth movement in any direction. The 12 mm main ball rolls on 4 internal balls, disassemblable construction for cleaning, compact dimensions 22 x 16 mm. Attaches to the chassis at two points. Reference 33569.

- Page: https://sigmanortec.ro/en/ball-bearing-n20-universal-wheel
- Price: 7.50 RON
- Availability: In stock; 1-2 zile
- Reference: 33569 · EAN: 5946518362214
- Category: Mechanical components > Wheels
- Package (shipping data): 0.01 kg
- Updated: 2026-09-14
- Shop: [Sigmanortec.ro](https://sigmanortec.ro/en/llms.txt)
- Prices: RON, VAT included; prices and stock as of 2026-10-22 01:33 (Europe/Bucharest)

## Description

Metal ball mount for robots, ideal as a third support point for platforms with two drive wheels, allows smooth movement in any direction. Attaches to the chassis at two points, the 12 mm main ball rolls easily on 4 internal balls, removable construction for quick cleaning, compact dimensions 22 x 16 mm for easy integration.
Support with a metal ball (ball caster) used in robots as a support point, usually the third wheel in robots that use only two driving wheels, ideal because it allows the robot to move in all directions.
The support is attached to the chassis in two points and has 4 smaller balls at the base for the easiest possible movement of the main ball.
Also, the support is removable if you want to clean it.
Specifications:
Dimensions mm: 22 x 16mm
Dimensions mm rolling ball: 12mm