The MR148ZZ ball bearing is a compact metric-size miniature ball bearing designed for applications that require precise rotation, stable performance, and efficient space utilization. As a deep groove bearing within the broader ball bearings category, MR148ZZ is widely adopted in small mechanical assemblies where reliability and consistency are critical.
The ZZ designation indicates double metal shields, allowing the MR148ZZ to protect internal rolling elements from dust and light contaminants while maintaining low friction. This makes it a practical choice among miniature bearings for speed-sensitive and continuous-operation environments.
MR148ZZ Bearing Design and Performance Characteristics
Engineered to metric size standards, the MR148ZZ miniature ball bearing ensures dimensional compatibility across globally standardized equipment. Its deep groove raceway structure supports radial loads efficiently and can handle limited axial loads in both directions, which is typical for high-quality miniature ball bearings.
Compared with open-type variants, the MR148ZZ offers improved lubricant retention and extended service life. At the same time, its non-contact metal shields provide lower torque and higher speed capability than rubber-sealed alternatives, reinforcing its position within metric standard miniature ball bearings.
MR148ZZ Dimensions and Technical Specifications
The table below summarizes the standard dimensions and core specifications of the MR148ZZ ball bearing, helping engineers and buyers quickly confirm suitability for their applications.
| Parameter | Specification |
|---|---|
| Bearing Model | MR148ZZ |
| Bearing Type | Ball Bearing |
| Bore Diameter (d) | 8 mm |
| Outer Diameter (D) | 14 mm |
| Width (B) | 4 mm |
| Shield Type | Double Metal Shields (ZZ) |
| Size Standard | Metric |
| Bearing Category | Miniature Ball Bearing |
This standardized size profile allows the MR148ZZ to be easily compared and cross-linked with other metric miniature ball bearings in the same series.
Typical Applications of the MR148ZZ Ball Bearing
Thanks to its slim profile and stable rotational behavior, the MR148ZZ miniature ball bearing is commonly used in precision devices where compact design and smooth motion are essential.
Typical application areas include:
- Small electric motors and micro gear systems
- Office automation equipment and electronic devices
- Precision instruments and light-duty transmission assemblies
In these applications, MR148ZZ benefits from the balance of protection, speed capability, and durability expected from high-quality miniature ball bearings.
MR148ZZ vs Other Miniature Ball Bearing Options
Within the miniature bearing range, the MR148ZZ stands out for its combination of compact dimensions and shielded construction. Compared with open bearings, it offers better contamination resistance, while its metal shields allow higher rotational speeds than rubber-sealed versions.
For designers and procurement teams working with metric standard miniature ball bearings, MR148ZZ represents a reliable, cost-effective solution for repeatable performance across multiple product lines.
Procurement Considerations for MR148ZZ Bearings
When selecting MR148ZZ ball bearings, key considerations include operating speed, load requirements, and environmental cleanliness. The ZZ shield design is best suited for relatively clean environments where non-contact sealing and low friction are priorities.
From a sourcing perspective, MR148ZZ offers:
- Consistent availability due to metric standardization
- Easy integration into miniature bearing inventories
- Strong internal-linking potential within ball bearing and miniature bearing categories
