A
Anonymous
Apr 15, 2026
Rating: 5/5
Precise dimensions
Measured with calipers. The inner diameters are spot on. No play in the race.
Description
Micro Stainless Steel Small Bearings Inner Bore 1 2 3 4 5 6 7 8 9 10mm Japanese Imported High-Speed Quiet
Reviews
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
A
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.
A
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.
A
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.
A
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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