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SW R2 Miniature Precision Ball Bearing (1/8 x 3/8 Inch) | High-Speed Deep Groove

5.69 5.69

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Product Category: Deep Groove Ball Bearing

Product Details

SW R2 Miniature Precision Ball Bearing (1/8 x 3/8 Inch) | High-Speed Deep Groove

The SW R2 Miniature Deep Groove Ball Bearing is engineered for applications demanding exceptional rotational accuracy, minimal friction, and high-speed stability within restricted spaces. Constructed from high-purity AISI 52100 bearing steel, this bearing features hardened races and precision-matched balls, ensuring quiet operation and extended operational life. The R2 configuration supports both radial and moderate axial loads, making it ideal for instruments, small motors, dental equipment, and sensitive robotic joints. Manufactured under stringent ISO 9001 standards, the SW R2 delivers reliable performance crucial for OEM designs where repeatability and efficiency are non-negotiable. Choosing the SW R2 translates directly to reduced maintenance frequency and improved Total Cost of Ownership (TCO). Its precision dimensions guarantee seamless interchangeability with existing R2 configurations from global manufacturers, providing a reliable replacement solution for critical components. With options for metal shielding (ZZ) or contact seals (2RS), the bearing is protected against ingress of contaminants while retaining essential lubrication. For design engineers seeking uncompromising quality and demonstrable longevity in miniature applications, the SW R2 sets the benchmark for industrial reliability.

Key Features

  • Ultra-low friction torque suitable for instrument and high-precision machinery.
  • Engineered for high-speed rotational performance up to 55,000 RPM (greased).
  • Manufactured from durable AISI 52100 steel for superior fatigue resistance.
  • Versatile design handles both radial and moderate axial loads simultaneously.
  • Available in shielded (ZZ) and sealed (2RS) configurations for optimal protection in dusty or wet environments.
  • Dimensional accuracy ensures direct, drop-in replacement compatibility across all major brands.

Technical Specifications

d0.1250 in (3.175 mm)
D0.3750 in (9.525 mm)
B0.1562 in (3.967 mm)
C_r (Dynamic Load Rating)135 N
C_or (Static Load Rating)65 N
Boundary Speed (Grease)55,000 RPM
Closure TypeOpen, ZZ (Shielded), or 2RS (Sealed)
MaterialAISI 52100 High Carbon Chromium Steel
Precision RatingABEC-1 (ISO P0)
Bore TypeCylindrical