Attributes

Brand	-
Category	Industrial Small Parts / Bearings & Bushings
Origin	-
Inner Diameter (Bore)	12 mm
Outer Diameter (OD)	18/21/24/26/28/30/32/36 mm (Select Variant)
Material	Chrome Steel (GCr15)
Seal Type	ZZ (Metal) or 2RS (Rubber)
Precision Rating	ABEC-7 / P4
Maximum Speed	20,000 - 35,000 RPM
Lubrication	Pre-lubricated High-Speed Grease
Cage Material	Steel or Nylon
Operating Temperature	-20°C to +120°C
Package Quantity	10 Pieces per Pack

5 reviews

Anonymous

Mar 30, 2026

Rating: 5/5

Reliable non-standard sizes

Hard to find 21mm OD bearings locally. These are genuine chrome steel and hold up under load without issue.

Anonymous

Mar 06, 2026

Rating: 5/5

Great for high RPM applications

Using these in a high-speed grinder. No heat buildup after prolonged use and vibration is minimal.

Anonymous

Feb 26, 2026

Rating: 5/5

Ultra quiet as advertised

Replaced standard bearings in my CNC spindle. The noise reduction is noticeable immediately upon startup.

Anonymous

Feb 24, 2026

Rating: 4/5

Good quality, slight delay

Bearings are high quality and precise. Shipping took a bit longer than expected but worth the wait for the size.

Anonymous

Feb 09, 2026

Rating: 5/5

Perfect for custom motor build

Needed a specific OD for a drone motor modification. These fit perfectly and run very smooth. High quality steel.

5 FAQ

Q: Are these sealed against dust?

A: Yes, choose the 2RS option for rubber sealing which protects against dust and moisture effectively.

Q: Can I mix different ODs in one order?

A: Please select specific OD variants separately to ensure accurate inventory allocation and shipping.

Q: What grease is used inside?

A: We use a high-speed synthetic grease suitable for most motor applications within the temperature range.

Q: Is the bore exactly 12mm?

A: Yes, the inner bore is standardized at 12mm with h6 tolerance for a secure shaft fit.

Q: Do you offer bulk pricing?

A: Yes, contact our support team directly for orders exceeding 100 packs for discounted rates.

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