A
Anonymous
Apr 19, 2026
Rating: 5/5
Genuine Product
Packaging confirmed these are authentic Japanese NMB bearings. No noise under load.
Description
Japanese NMB high-speed miniature bearings (623, 624, 625, 626, 627, 628, 629ZZ) imported for model and motor applications
Reviews
Attributes
| Brand | - |
| Category | Industrial Small Parts / Bearings & Bushings |
| Origin | - |
| Brand | NMB Technologies |
| Material | Chrome Steel (SAE 52100) |
| Shielding | Dual Metal Shield (ZZ) |
| Precision Class | ABEC-7 / ISO Class 4 |
| Lubrication | High-Speed Synthetic Grease |
| Cage Material | Pressed Steel |
| Country of Origin | Japan |
| Primary Application | RC Model Motors & Drones |
| Inner Diameter Range | 3mm to 9mm |
| Load Type | Radial Deep Groove |
5 reviews
A
Anonymous
Apr 18, 2026
Rating: 5/5
Perfect for 2205 Motors
Used the 625 size on my racing quad. They handle high RPMs without heating up.
A
Anonymous
Apr 15, 2026
Rating: 4/5
Great Quality, Pricey
You definitely pay for the NMB name, but the longevity is worth it for competition builds.
A
Anonymous
Apr 08, 2026
Rating: 5/5
High RPM Capability
Running these at 40k RPM on a test bench. No vibration or failure after hours of testing.
A
Anonymous
Feb 04, 2026
Rating: 5/5
Silky Smooth Spin
These bearings are incredibly smooth right out of the box. Noticed less friction in my motor immediately.
5 FAQ
Q: What is the maximum RPM rating?
A: Ratings vary by size, but these are designed for high-speed applications up to 40,000 RPM depending on load.
Q: Which bearing size fits a 2205 brushless motor?
A: Most 2205 motors utilize the 625 size bearing. Please check your motor specifications to confirm.
Q: Are these bearings ceramic or steel?
A: This listing is for Chrome Steel bearings. We do offer ceramic options in a separate listing.
Q: Is there a discount for bulk orders?
A: Yes, automatic quantity discounts are applied at checkout when purchasing packs of 10 or more.
Q: Do they come pre-lubricated?
A: Yes, all bearings come pre-lubricated with high-speed synthetic grease suitable for model motors.
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