MR52, MR52Z, MR52ZZ, MR52RS, MR52-2RS Miniature Deep Groove Ball Bearings 2x5x2.5mm – Precision Micro Bearings for Small Motors, Drones, RC Models & Electronics

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MR52, MR52Z, MR52ZZ, MR52RS, MR52-2RS Miniature Deep Groove Ball Bearings 2x5x2.5mm – Precision Micro Bearings for Small Motors, Drones, RC Models & Electronics

Ultra-compact MR52 series miniature deep groove ball bearings in size 2.5mm (ID) × 5mm (OD) × 2.5mm (W), engineered for precision applications where space is limited but smooth, low-friction rotation is critical. Ideal for micro motors, drones, RC models, smart gadgets, medical devices, small fans, and other compact electronic or mechanical systems.

Available in multiple sealing options to suit different environmental needs:

MR52: Open type – minimal friction, ideal for clean, controlled environments
MR52Z / MR52ZZ: Single or double metal shields – reduce dust ingress while maintaining low torque
MR52RS / MR52-2RS: Single or double rubber seals – offer enhanced protection against moisture and fine particles

Made from high-quality stainless steel (AISI 440C or equivalent) or chrome steel, these micro bearings deliver excellent corrosion resistance, quiet operation, and long service life. The MR52 series is especially popular in brushless DC motors (BLDC), FPV drone cameras, tiny gearboxes, wearable tech, and precision instruments.

All sealed variants come pre-lubricated with specialized low-viscosity grease suitable for high-speed micro applications. Their miniature size does not compromise performance—these bearings support both radial and light axial loads with exceptional rotational accuracy.

🔧 Key Specifications:

Models: MR52, MR52Z, MR52ZZ, MR52RS, MR52-2RS
Dimensions: 2.5 × 5 × 2.5 mm
Material: Stainless Steel (standard) or Chrome Steel
Precision: ABEC-1 to ABEC-7 available
Ideal for: Mini motors, drones, RC cars/planes, robotics, smart locks, and micro-electronics

⚠️ Tip: Use MR52-2RS in humid or dusty mini-devices; MR52ZZ for dry environments; open MR52 for ultra-high-speed or cleanroom use.

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

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