MR105, MR105Z, MR105ZZ, MR105RS, MR105-2RS Miniature Deep Groove Ball Bearings 5x10x4mm – Precision Micro Bearings for Small Motors, Drones, RC Models & Smart Electronics

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MR105, MR105Z, MR105ZZ, MR105RS, MR105-2RS Miniature Deep Groove Ball Bearings 5x10x4mm – Precision Micro Bearings for Small Motors, Drones, RC Models & Smart Electronics

The MR105 series miniature deep groove ball bearings feature dimensions of 5mm (ID) × 10mm (OD) × 4mm (W), offering a robust balance of compact size and enhanced load capacity—ideal for applications requiring reliable performance in tight spaces. Commonly used in small motors, mini drones, RC vehicles, smart locks, wearable devices, cooling fans, and precision electronics.

Available in multiple sealing configurations to suit your operating environment:

MR105: Open type – minimal friction, perfect for clean or controlled settings
MR105Z / MR105ZZ: Single or double metal shields – reduce dust ingress while retaining factory grease
MR105RS / MR105-2RS: 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 high speeds.

Widely applied in brushless DC (BLDC) motors, FPV drone gimbals, compact gearboxes, robotics joints, medical instruments, and consumer electronics, the MR105 series stands out thanks to its 4mm width, which improves radial load support without sacrificing miniaturization.

🔧 Key Specifications:

Models: MR105, MR105Z, MR105ZZ, MR105RS, MR105-2RS
Dimensions: 5 × 10 × 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 MR105-2RS for humid or dusty conditions; MR105ZZ for dry/dusty environments; open MR105 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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