# Bearing 625ZZ

> Radial ball bearing 625ZZ with double metal shields (ZZ) for dust protection and lubricant retention. Inner diameter 5mm, outer diameter 16mm, thickness 5mm, tolerance +-0.2mm. Suitable for 3D printers, guide mechanisms, wheels, pulleys, small motors and DIY projects requiring precise rotation and low friction.

- Page: https://sigmanortec.ro/en/bearing-625zz
- Price: 3.52 RON
- Availability: In stock; 1-2 zile
- Reference: 33004 · EAN: 5946780757770
- Category: Mechanical components > Bearings
- Package (shipping data): 0.004 kg
- Updated: 2026-07-03
- 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

Bearing for fast and precise movements in small motors, rollers and industrial mechanisms. Construction with balls and ZZ metal shields for dust protection and lubricant retention, smooth operation with low friction. Compact dimensions 5x16x5 mm, suitable for installation in confined spaces and long-term use.
The 625ZZ bearing is a miniature radial ball bearing, suitable for DIY projects and budget applications that require precise rotation and low friction.
It is equipped with two metal protective shields (indicated by the ZZ suffix) that protect it against dust and particles, maintaining internal lubrication and ensuring quiet operation.
With an inner diameter of 5mm, an outer diameter of 16mm, and a thickness of 5mm, it is ideal for 3D printers, small guiding mechanisms, wheels, pulleys, motors, and various hobby builds.
The tolerance of +-0.2mm provides a proper fit for home and experimental projects, at a good price-quality ratio.
Specifications:
Type: 625ZZ
Inner diameter: 5mm
Outer diameter: 16mm
Thickness: 5mm
Tolerance: +-0.2mm
Protection type: double metal shields (ZZ)
Usage:
Check the dimensions of the shaft and housing to ensure compatibility with the 5mm inner diameter and 16mm outer diameter.
Clean the shaft and mounting housing before installation to avoid the entry of impurities.
Install the bearing by applying uniform pressure on the corresponding ring, using the inner ring when mounting on the shaft and the outer ring when mounting in the housing.
Avoid striking the bearing directly so as not to damage the balls or raceways.
After installation, check that the rotation is smooth and quiet.