Description
Reviews
| Brand | - |
| Category | Industrial Small Parts / Bearings & Bushings |
| Origin | - |
| Brand | NMB Technologies |
| Model Number | 63800ZZ / L-1910 |
| Inner Diameter | 10 mm |
| Outer Diameter | 19 mm |
| Width | 7 mm |
| Material | Chrome Steel |
| Seal Type | Dual Metal Shield (ZZ) |
| Precision Rating | ABEC-5 |
| Cage Material | Steel |
| Country of Origin | Japan |
Anonymous
Apr 04, 2026
Rating: 5/5
Quiet Fan Repair
Replaced the worn-out bearings in my desktop fan. Installation was easy and the fan runs silently now. Highly recommend for hobbyists.
Anonymous
Mar 04, 2026
Rating: 5/5
Exact Dimensions
Measured them with calipers and they are spot on 10x19x7 mm. Perfect for my miniature project requiring high-speed rotation.
Anonymous
Feb 17, 2026
Rating: 5/5
Perfect for my RC Car
These bearings are incredibly smooth. I used them to upgrade my RC motor and the difference in speed is noticeable. Genuine NMB quality.
Anonymous
Feb 11, 2026
Rating: 4/5
Good Quality
Solid bearings with precise dimensions. They were slightly tight at first but loosened up after a few minutes of run-in.
Anonymous
Feb 06, 2026
Rating: 5/5
Genuine NMB Product
I was worried about counterfeits but these are the real deal. Packaging was secure and the build quality is excellent.
Q: Will this bearing fit a 10mm shaft?
A: Yes, the inner diameter is exactly 10 mm, designed to fit standard 10mm shafts.
Q: What is the difference between ZZ and RS seals?
A: ZZ indicates metal shields on both sides, offering less friction than rubber RS seals, making them better for high speeds.
Q: Is this bearing pre-lubricated?
A: Yes, these come pre-lubricated from the factory for immediate use.
Q: What is the maximum RPM rating?
A: These are high-speed bearings suitable for most RC and fan applications, typically handling up to 20,000 RPM depending on load.
Q: Are these sold individually or in packs?
A: The price listed is for a single unit, but we offer bulk discounts for quantities over 10.
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