R4, R4Z, R4ZZ, R4RS, R4-2RS Inch Deep Groove Ball Bearings 1/4"x5/8"x10/51" (6.35x15.875x4.978mm) – Miniature Sealed Bearings for Small Motors, Power Tools, Printers, RC Models & Precision Equipment

R4, R4Z, R4ZZ, R4RS, R4-2RS Inch Deep Groove Ball Bearings 1/4"x5/8"x10/51" (6.35x15.875x4.978mm) – Miniature Sealed Bearings for Small Motors, Power Tools, Printers, RC Models & Precision Equipment

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R4, R4Z, R4ZZ, R4RS, R4-2RS Inch Deep Groove Ball Bearings 1/4"x5/8"x10/51" (6.35x15.875x4.978mm) – Miniature Sealed Bearings for Small Motors, Power Tools, Printers, RC Models & Precision Equipment

The R4 series inch miniature deep groove ball bearings feature standard dimensions of 1/4"x5/8"x10/51" (6.35x15.875x4.978mm) , offering a robust balance of load capacity and compact size—ideal for small electric motors, power tools, printers, scanners, RC cars, drones, and precision mechanical devices.

Available in multiple sealing options to suit your operating environment:

R4: Open type – minimal friction, best for clean or oil-lubricated systems
R4Z / R4ZZ: Single or double metal shields – reduce dust ingress while retaining factory grease
R4RS / R4-2RS: 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 extended service life. Stainless steel (440C) versions are available upon request for corrosive or hygiene-sensitive applications.

These bearings support both radial and moderate axial loads, making them suitable for low-to-medium speed applications where reliability and space efficiency are essential.

🔧 Key Specifications:

Models: R4, R4Z, R4ZZ, R4RS, R4-2RS
Dimensions:1/4"x5/8"x10/51" (6.35x15.875x4.978mm)
Material: Chrome Steel (standard); Stainless Steel optional
Type: Inch series miniature deep groove ball bearing
Ideal for: Power tools, small motors, office equipment, hobby models, robotics

⚠️ Tip: Use R4-2RS in wet or dusty conditions; R4ZZ for dry environments; open R4 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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