MR117, MR117Z, MR117ZZ, MR117RS, MR117-2RS Miniature Deep Groove Ball Bearings 7x11x3mm – Precision Micro Bearings for Small Motors, Drones, RC Models & Smart Electronics

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MR117, MR117Z, MR117ZZ, MR117RS, MR117-2RS Miniature Deep Groove Ball Bearings 7x11x3mm – Precision Micro Bearings for Small Motors, Drones, RC Models & Smart Electronics

The MR117 series miniature deep groove ball bearings feature compact yet robust dimensions of 7mm (ID) × 11mm (OD) × 4mm (W), offering reliable performance in applications requiring a 7mm shaft. Ideal for small motors, mini drones, RC vehicles, smart locks, wearable devices, cooling fans, and precision electronic mechanisms.

Available in multiple sealing configurations to suit your operating environment:

MR117: Open type – minimal friction, perfect for clean or controlled settings
MR117Z / MR117ZZ: Single or double metal shields – reduce dust ingress while retaining factory grease
MR117RS / MR117-2RS: Single or double rubber seals – provide superior protection against moisture, dust, and fine contaminants

Manufactured from high-grade stainless steel (AISI 440C) as standard—delivering excellent corrosion resistance—or chrome steel upon request. These micro bearings ensure smooth rotation, low noise, and consistent performance even at elevated speeds.

Commonly used in brushless DC (BLDC) motors, FPV drone gimbals, compact gearboxes, robotics joints, medical instruments, and consumer electronics, the MR117 series fills a key niche for designs needing a 7mm bore with minimal radial space.

🔧 Key Specifications:

Models: MR117, MR117Z, MR117ZZ, MR117RS, MR117-2RS
Dimensions: 7 × 11 × 4 mm
Material: Stainless Steel (standard); Chrome Steel optional
Precision Grade: ABEC-1 to ABEC-7 available
Ideal for: Small motors, drones, RC models, smart gadgets, and precision mechanisms

⚠️ Tip: Choose MR117-2RS for humid or dusty conditions; MR117ZZ for dry/dusty environments; open MR117 for ultra-high-speed or cleanroom applications.

Each bearing undergoes strict quality inspection and is packaged in anti-static containers. Available in single units or bulk packs — contact us for OEM or wholesale orders!

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