623ZZ Double-Shielded Ball Bearing 3x10x4 mm
Part number: 623ZZ3D Printer & CNC Parts
Currently unavailable
No store has this product in stock right now. Prices below are the last ones we recorded.
Prices updated: 13 Oct 2026
Price history
Lowest daily price, last 90 days
Not enough price history yet.
About this product
The 623ZZ is a miniature ball bearing with a 3 mm bore, 10 mm outside diameter and 4 mm width, fitted with metal shields on both sides. It is commonly used in 3D printer idlers, pulleys and wheel assemblies that run on 3 mm shafts.
Specifications
- Bore (inner diameter)
- 3 mm
- Outer diameter
- 10 mm
- Width
- 4 mm
- Shielding
- ZZ (metal shields both sides)
Frequently asked questions
Will it fit a 3 mm shaft?
Yes, its 3 mm bore matches 3 mm shafts. Measure your shaft diameter before installing to confirm the fit.
Does ZZ mean it is sealed?
ZZ means metal shields on both sides, which keep dust out. They are not rubber seals, so the bearing is not waterproof.
