Description
Reviews
| 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 |
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.
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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