MR117zz
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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MR117zz Bearing Product Overview & Core Advantages
The MR117zz is a metric, single row deep groove ball bearing designed for high reliability in compact applications. It features integral shields (zz) to protect against contamination and is pre-lubricated for immediate use. This bearing is engineered to handle primarily radial loads efficiently, offering a robust solution where space is at a premium and consistent performance is critical. Its construction from high-grade chrome steel ensures durability and a long service life under standard operating conditions.
MR117zz Bearing Model Code Explained, Specifications & Naming Convention
- MR117: Basic bearing series designation, indicating a metric, single row deep groove ball bearing with a 7mm bore, 11mm OD, and 3mm width.
- zz: Signifies that the bearing is equipped with non-contact shields on both sides. This provides effective protection against dust and other particulates while minimizing friction, making it suitable for high-speed operation.
MR117zz Bearing Structural Features & Performance Benefits
Optimized for Radial Loads: The deep groove raceway and single row of 9 precision balls enable efficient handling of the specified radial dynamic load rating of 87 lbf.
High-Speed Capability: The combination of a stainless steel cage, low-friction shields, and optimized internal geometry contributes to a high limiting speed of 43,000 rpm.
Precision and Consistency: Manufactured to ABEC1 tolerance class with a controlled radial internal clearance (MC3 group: 0.002mm to 0.013mm), ensuring smooth and predictable operation.
Protected and Pre-Lubricated: The 300 series stainless steel shields retain the factory-applied lubricant and protect the internal components, offering a maintenance-free solution for the bearing's operational lifespan.
MR117zz Bearing Typical Application Areas
The MR117zz is ideally suited for applications requiring a compact, reliable, and high-speed bearing solution. Common uses include:
- Small Electric Motors (e.g., in drones, RC models, small fans)
- Precision Instruments and optical devices
- Office Automation Equipment such as printers and scanners
- Medical Devices and laboratory equipment
- Computer Cooling Fans and small spindles
