Attributes

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

5 reviews

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.

5 FAQ

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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