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The 603ZZ bearing is a precision miniature ball bearing measuring 3mm (bore) x 9mm (outer diameter) x 5mm (width), built for applications where a compact size and reliable performance matter. This 603ZZ bearing is machined from AISI 52100 bearing steel (also known as GCr15 or 100Cr6) and heat-hardened to Rc 59-64 before final grinding and polishing, giving it excellent wear resistance and a long service life under repeated load cycles.
What does “603ZZ” mean?
The “603” identifies the bore, outer diameter, and width of the bearing, while “ZZ” indicates double metal shields on both sides. This shielding helps keep out dust, debris, and moisture, making the 603ZZ bearing a solid choice for enclosed mechanical assemblies that still need to spin freely.
Where is a 603ZZ bearing commonly used?
This size 603ZZ bearing is popular in small motors, RC hobby applications, fidget spinners, precision instruments, and other compact mechanical systems where a 3x9x5mm footprint is required. If you’re looking for other sizes, browse our full range of [Miniature Bearings].
Why choose this 603ZZ bearing from RC Bearings?
Every 603ZZ bearing we ship is manufactured to tight tolerances for smooth, consistent rotation. Backed by 30+ years of bearing supply experience, RC Bearings ships the 603ZZ bearing nationwide across the USA, with fast processing from our Nashua, NH facility.
| Weight | 0.03 oz |
|---|---|
| UPC | 704088038190 |
| Id | |
| Od | |
| Th | |
| Enclosure | |
| Ball mtl | |
| Race mtl | |
| Retainer mtl |
RCBearing provide high-precision, high-quality anti-friction Bearings with exclusive range.
© 2025 RCBearing . All Rights Reserved.
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