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R2-5, R2-5​Z, R2-5​ZZ, R2-5​RS, R2-52RS Inch Deep Groove Ball Bearings 1/8"x5/16"x9/64" (3.175x7.938x3.571mm) – Miniature Sealed Bearings for Small Motors, RC Cars, Drones, Printers & Precision Device
Needle Bearing for Printing Machines
R2-5, R2-5​Z, R2-5​ZZ, R2-5​RS, R2-52RS Inch Deep Groove Ball Bearings 1/8"x5/16"x9/64" (3.175x7.938x3.571mm) – Miniature Sealed Bearings for Small Motors, RC Cars, Drones, Printers & Precision Device

R2-5, R2-5​Z, R2-5​ZZ, R2-5​RS, R2-52RS Inch Deep Groove Ball Bearings 1/8"x5/16"x9/64" (3.175x7.938x3.571mm) – Miniature Sealed Bearings for Small Motors, RC Cars, Drones, Printers & Precision Device

R2-5, R2-5​Z, R2-5​ZZ, R2-5​RS, R2-52RS Inch Deep Groove Ball Bearings 1/8"x5/16"x9/64" (3.175x7.938x3.571mm) – Miniature Sealed Bearings for Small Motors, RC Cars, Drones, Printers & Precision Devices
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R2-5, R2-5Z, R2-5ZZ, R2-5RS, R2-52RS Inch Deep Groove Ball Bearings 1/8"x5/16"x9/64" (3.175x7.938x3.571mm) – Miniature Sealed Bearings for Small Motors, RC Cars, Drones, Printers & Precision Devices


The R2 series inch miniature deep groove ball bearings feature compact dimensions of 1/8" ID × 5/16" OD × 9/64" W (3.175x7.938x3.571 mm), making them ideal for space-constrained applications in small DC motors, RC cars, drones, hobby models, printers, scanners, medical tools, and precision instruments.
Available in multiple sealing configurations to match your operating environment:
  • R2-5: Open type – minimal friction, perfect for clean or oil-lubricated systems
  • R2-5Z / R2-5ZZ: Single or double metal shields – reduce dust ingress while retaining factory grease
  • R2-5RS / R2-52RS: Single or double rubber seals – provide excellent protection against moisture, dust, and fine contaminants
Manufactured from high-quality chrome steel (SAE 52100) with precision grinding for smooth, quiet rotation and long service life. Stainless steel (440C) versions are available upon request for corrosive or hygiene-sensitive applications.
These bearings support both radial and light axial loads, making them suitable for low-to-medium speed applications where reliability and miniaturization are critical.
🔧 Key Specifications:
  • Models: R-52, R2-5Z, R2-5ZZ, R2-5RS, R2-52RS
  • Dimensions: 1/8" × 5/16" × 9/64" (3.175x7.938x3.571 mm)
  • Material: Chrome Steel (standard); Stainless Steel optional
  • Type: Inch series miniature deep groove ball bearing
  • Ideal for: RC models, small motors, office equipment, lab devices, robotics
⚠️ Tip: Choose R2-52RS for humid/dusty conditions; R2-5ZZ for dry environments; open R2-5 for high-speed or custom-lubricated setups.
Each bearing undergoes strict quality inspection and is packed in anti-rust packaging. Available in single units or bulk—contact us for OEM or wholesale orders!


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