MR63, MR63Z, MR63ZZ, MR63RS, MR63-2RS Miniature Deep Groove Ball Bearings 3x6x2.5mm – Precision Micro Bearings for Small Motors, Drones, RC Models & Electronics

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MR63, MR63Z, MR63ZZ, MR63RS, MR63-2RS Miniature Deep Groove Ball Bearings 3x6x2.5mm – Precision Micro Bearings for Small Motors, Drones, RC Models & Electronics

Compact and reliable, the MR63 series miniature deep groove ball bearings feature dimensions of 3mm (ID) × 6mm (OD) × 2.5mm (W), making them ideal for space-limited applications that require smooth, quiet, and low-friction rotation. Commonly used in micro motors, tiny drones, RC cars/planes, smart locks, cooling fans, wearable tech, and precision electronic devices.

Available in multiple sealing options to match your operating conditions:

MR63: Open type – minimal drag, best for clean or controlled environments
MR63Z / MR63ZZ: Single or double metal shields – reduce dust ingress while retaining factory grease
MR63RS / MR63-2RS: Single or double rubber seals – offer enhanced protection against moisture, dust, and fine contaminants

Manufactured from high-quality stainless steel (AISI 440C) as standard—providing excellent corrosion resistance—or chrome steel upon request. These micro bearings deliver high rotational accuracy, low noise, and consistent performance even at elevated speeds.

Widely applied in brushless DC (BLDC) micro motors, FPV drone gimbals, mini gearboxes, robotics joints, medical instruments, and consumer electronics, the MR63 series offers a perfect balance of miniaturization and mechanical reliability.

🔧 Key Specifications:

Models: MR63, MR63Z, MR63ZZ, MR63RS, MR63-2RS
Dimensions: 3 × 6 × 2.5 mm
Material: Stainless Steel (standard); Chrome Steel optional
Precision Grade: ABEC-1 to ABEC-7 available
Ideal for: Micro motors, drones, RC models, smart gadgets, and precision mechanisms

⚠️ Tip: Use MR63-2RS in humid or dusty environments; MR63ZZ for dry/dusty conditions; open MR63 for ultra-high-speed or cleanroom applications.

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

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