Attributes

Brand	-
Category	Industrial Small Parts / Bearings & Bushings
Origin	-
Brand	Germany UBY
Series	MR Miniature
Material	GCr15 Chrome Steel
Precision Grade	ABEC-7 (ISO P4)
Cage Type	Steel Wire-Cut
Lubrication	High-Speed Synthetic Grease
Seal Type	Open (ZZ/2RS Optional)
Inner Diameter Range	1 mm - 10 mm
Maximum RPM	Up to 60,000 RPM
Package Count	10 Pieces per Pack

5 reviews

Anonymous

Mar 15, 2026

Rating: 5/5

Perfect for drone motors

These bearings fit perfectly in my custom drone build. Very smooth rotation and minimal noise at high speeds.

Anonymous

Feb 13, 2026

Rating: 4/5

Good quality, slow shipping

The bearings themselves are excellent quality. Only downside was the shipping took a bit longer than expected.

Anonymous

Feb 10, 2026

Rating: 5/5

Smooth operation

Used these for a small electric motor rebuild. They run very smoothly and seem durable.

Anonymous

Feb 10, 2026

Rating: 5/5

High precision confirmed

Measured with calipers and the tolerance is spot on. Great for precision instrumentation projects.

Anonymous

Feb 01, 2026

Rating: 5/5

Exactly as described

Needed specific miniature sizes for RC cars. These matched the specs perfectly and arrived well packaged.

5 FAQ

Q: Are these bearings suitable for high-temperature environments?

A: These bearings are rated for continuous operation up to 120°C. For higher temperatures, please contact our engineering team.

Q: Is the grease pre-applied or do I need to lubricate them?

A: All bearings come factory lubricated with high-speed synthetic grease. No additional lubrication is needed upon arrival.

Q: What is the exact tolerance class for these bearings?

A: These MR series bearings meet ISO 492 Class 4 standards, equivalent to ABEC-7 precision.

Q: Do you offer bulk pricing for industrial orders?

A: Yes, we offer tiered pricing for bulk orders. Please reach out to our sales department for a custom quote.

Q: What is the estimated shipping time for this item?

A: Standard shipping typically takes 3-5 business days within the continental US. Expedited options are available at checkout.

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