Attributes

Brand	-
Category	Industrial Small Parts / Bearings & Bushings
Origin	-
Material	Stainless Steel (SUS440C)
Origin	Japan
Inner Diameter Range	1mm - 10mm
Precision Grade	ABEC-7
Seal Type	Double Shielded (ZZ)
Cage Material	Stainless Steel
Lubrication	High-Speed Grease
Max RPM	Up to 30,000 (Size Dependent)
Hardness	HRC 58-60
Package Quantity	10 Pieces per Size

5 reviews

Anonymous

Apr 15, 2026

Rating: 5/5

Precise dimensions

Measured with calipers. The inner diameters are spot on. No play in the race.

Anonymous

Apr 13, 2026

Rating: 5/5

High quality Japanese import

You can feel the difference compared to generic Chinese bearings. Worth the extra cost for precision projects.

Anonymous

Apr 04, 2026

Rating: 5/5

Spin forever

Installed on my RC car wheels. The free spin time is impressive. High-speed grease seems effective.

Anonymous

Mar 22, 2026

Rating: 4/5

Great for 3D printer upgrades

Swapped these into my extruder. Very quiet. Only 4 stars because packaging was a bit loose.

Anonymous

Feb 08, 2026

Rating: 5/5

Perfect for my drone build

These bearings are incredibly smooth. Used the 3mm and 5mm for my motor mounts. Noise level is practically zero.

5 FAQ

Q: What is the maximum RPM for the 5mm bearing?

A: For the 5mm inner diameter, the max RPM is approximately 25,000 under optimal load conditions.

Q: Is the grease safe for incidental food contact?

A: No, this is industrial high-speed grease. We do not recommend these for food processing machinery.

Q: Do you offer bulk discounts for 100+ packs?

A: Yes, please contact our sales team directly for bulk pricing on large quantity orders.

Q: What is the tolerance grade?

A: These bearings meet ISO Class 5 tolerance standards, ensuring high precision fitment.

Q: Are these sealed against dust?

A: They are double shielded (ZZ), which offers good protection against dust but are not fully waterproof sealed.

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