MR105zz
MR Series Miniature Bearings
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Basic Information
Main Dimensions
Inner Ring Dimensions
Ball & Washer Dimensions
Performance
Materials
Environment & Compliance
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MR105zz Bearing Product Overview & Core Advantages
The MR105zz is a miniature deep groove ball bearing engineered for precision applications requiring compact design and reliable performance. This shielded single row bearing is designed primarily to accommodate radial loads while offering moderate axial load capacity. Its construction from high-grade chrome steel and inclusion of stainless steel components ensure durability and consistent operation in demanding environments. The bearing is pre-lubricated and features integrated shields, making it an excellent choice for applications where space is limited and maintenance access is difficult.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| MR105 | Bearing series designation indicating miniature metric dimensions (5mm bore × 10mm OD × 4mm width) |
| zz | Double-sided metal shields providing protection against contamination while retaining lubricant |
MR105zz Bearing Structural Features & Performance Benefits
Optimized Load Capacity: The deep groove raceway and single row design enable efficient handling of radial loads while accommodating moderate axial loads in both directions. With a dynamic load rating of 82 lbf and static load rating of 30 lbf, this bearing delivers reliable performance in compact applications.
Precision Engineering: Manufactured to ABEC1 tolerance class with bore and outside diameter tolerances of -0.008mm to 0, ensuring consistent performance and interchangeability. The MC3 radial internal clearance (0.002mm to 0.013mm) provides optimal operation under normal load and speed conditions.
Enhanced Durability: Constructed with chrome steel rings and balls combined with a stainless steel cage, offering excellent wear resistance and corrosion protection. The 300 series stainless steel shields provide effective contamination protection while maintaining lubricant integrity.
High-Speed Capability: With a limiting speed of 50,000 rpm, this bearing is suitable for high-speed miniature applications. The optimized ball complement (8 balls of 1.2mm diameter) and precision cage design ensure smooth operation at elevated speeds.
MR105zz Bearing Typical Application Areas
- Small precision motors and miniature DC motors
- Medical devices and dental handpieces
- Office automation equipment including printers and scanners
- Robotics and automation components requiring compact bearings
- Instrumentation and measurement devices
- Computer cooling fans and small blowers
- Radio-controlled models and hobbyist applications
