Rated 4.6 out of 5 stars.
Need a specific-sized ball bearing?
This is an NTN 6821 ZZ.
Let's break that down: 6821 is the size code.
It has an Inner Diameter (ID) of 105mm, an Outer Diameter (OD) of 130mm, and a Width of 13mm.
The 'ZZ' suffix means it has metal shields on both sides – these keep most dust and debris out while keeping grease in, but they're not meant for submerged or high-pressure washdowns (for that, you'd want rubber seals marked '2RS').
NTN is a major, trusted bearing manufacturer, so this is a quality industrial component.
This 'thin section' style means the cross-section (the difference between OD and ID divided by two) is relatively small for its diameter.
You'd find bearings like this in all sorts of machinery, electric motors, pulleys, or conveyors where space is a consideration.
Always match the ID, OD, width, and shield/seal type to your old bearing or application specs.
A reliable, brand-name bearing for a smooth, long-lasting repair.
