Description
Reviews
| Brand | - |
| Category | Industrial Small Parts / Bearings & Bushings |
| Origin | - |
| Brand | OKO |
| Country of Origin | Sweden |
| Material | High-Carbon Chrome Steel |
| Precision Class | P4 / P5 |
| Seal Type | ZZ (Metal Shield) |
| Cage Material | Steel Ribbon |
| Lubrication | High-Speed Synthetic Grease |
| MR52 Dimensions | 5mm x 2mm x 2.5mm |
| MR63ZZ Dimensions | 6mm x 3mm x 2.5mm |
| Recommended Application | RC Models, Drones, CNC Spindles |
Anonymous
Mar 03, 2026
Rating: 5/5
High speed capability
Running at high RPMs with no heat buildup. Excellent lubrication from the factory. Very satisfied.
Anonymous
Feb 26, 2026
Rating: 5/5
Exact fit for MR63ZZ
Dimensions were spot on. No need for shims or adjustments. Very happy with the precision grade.
Anonymous
Feb 17, 2026
Rating: 4/5
Great performance, slight delay
Bearings work flawlessly in my RC car. Shipping took a bit longer than expected but product is excellent.
Anonymous
Feb 11, 2026
Rating: 5/5
Perfect for my drone build
These bearings are incredibly smooth. Noticed less vibration immediately after installation. High quality.
Anonymous
Jan 24, 2026
Rating: 5/5
Genuine Swedish quality
You can feel the difference in precision compared to generic brands. Worth the extra cost for serious models.
Q: Are these suitable for high RPM motors?
A: Yes, designed for high-speed applications up to 20,000 RPM depending on load and setup.
Q: Are these stainless steel?
A: No, these are Chrome Steel for maximum hardness and durability under high load conditions.
Q: What is the difference between P4 and P5 here?
A: P4 offers tighter tolerance than P5. We ship based on stock availability within these precision grades.
Q: Do I need to clean the grease before use?
A: No, the factory grease is optimized for performance. Cleaning may void warranty and reduce lifespan.
Q: Can I use these in wet conditions?
A: The ZZ shield offers some protection, but they are not fully waterproof. Avoid direct water exposure.
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