MR72, MR72Z, MR72ZZ, MR72RS, MR72-2RS Miniature Deep Groove Ball Bearings 2x7x2.8mm – Precision Micro Bearings for Tiny Motors, Drones, RC Models & Smart Devices

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MR72, MR72Z, MR72ZZ, MR72RS, MR72-2RS Miniature Deep Groove Ball Bearings 2x7x2.8mm – Precision Micro Bearings for Tiny Motors, Drones, RC Models & Smart Devices

Ultra-compact MR72 series miniature deep groove ball bearings in size 2mm (ID) × 7mm (OD) × 2.8mm (W), engineered for space-limited applications requiring smooth, quiet, and low-friction rotation. Ideal for micro motors, mini drones, RC cars/planes, smart locks, wearable tech, cooling fans, and precision electronic instruments.

Available in multiple sealing options to suit diverse environments:

MR72: Open type – minimal drag, best for clean or controlled settings
MR72Z / MR72ZZ: Single or double metal shields – reduce dust ingress while retaining factory grease
MR72RS / MR72-2RS: Single or double rubber seals – offer enhanced protection against moisture, fine particles, and contaminants

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

Widely used in brushless DC (BLDC) micro motors, FPV drone gimbals, tiny gearboxes, robotics joints, medical micro-tools, and consumer electronics, the MR72 series combines miniaturization with mechanical reliability.

🔧 Key Specifications:

Models: MR72, MR72Z, MR72ZZ, MR72RS, MR72-2RS
Dimensions: 2 × 7 × 2.8 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 MR72-2RS in humid or dusty conditions; MR72ZZ for dry/dusty environments; open MR72 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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