MR115, MR115Z, MR115ZZ, MR115RS, MR115-2RS Miniature Deep Groove Ball Bearings 5x11x4mm – Precision Micro Bearings for Small Motors, Drones, RC Models & Smart Electronics

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MR115, MR115Z, MR115ZZ, MR115RS, MR115-2RS Miniature Deep Groove Ball Bearings 5x11x4mm – Precision Micro Bearings for Small Motors, Drones, RC Models & Smart Electronics

The MR115 series miniature deep groove ball bearings feature dimensions of 5mm (ID) × 11mm (OD) × 4mm (W), offering enhanced radial load capacity and improved stability in compact mechanical systems. Ideal for small motors, mini drones, RC cars/airplanes, smart locks, wearable tech, cooling fans, and precision electronic instruments where reliable performance under moderate load is essential.

Available in multiple sealing configurations to match your operating environment:

MR115: Open type – minimal friction, best for clean or controlled settings
MR115Z / MR115ZZ: Single or double metal shields – reduce dust ingress while retaining factory grease
MR115RS / MR115-2RS: 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 devices, and consumer electronics, the MR115 series benefits from its slightly larger outer diameter and 4mm width, delivering greater durability without compromising miniaturization.

🔧 Key Specifications:

Models: MR115, MR115Z, MR115ZZ, MR115RS, MR115-2RS
Dimensions: 5 × 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: Use MR115-2RS in humid or dusty conditions; MR115ZZ for dry/dusty environments; open MR115 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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