SW R3-2RS Miniature Inch Series Ball Bearing (3/16" x 1/2") Sealed | Precision Grade Radial Bearing
The SW R3-2RS bearing is a high-precision, miniature radial ball bearing engineered for applications demanding both high speed and protection against contamination. Featuring a 3/16 inch bore (d) and a 1/2 inch outer diameter (D), this bearing conforms to standard Inch R-series dimensions. Constructed from high-quality SAE 52100 Chrome Steel for the rings and balls, it ensures exceptional hardness and wear resistance. The -2RS configuration utilizes two contact rubber seals, pre-packed with industrial-grade grease, providing superior sealing against dust, moisture, and debris while retaining lubrication for extended maintenance intervals. It is rated for high dynamic and static load capacities typical of precision instrumentation and small mechanical assemblies.
Optimized for reliable long-term performance in challenging environments, the SW R3-2RS is ideal for use in robotics, precision motors, dental equipment, and sensitive measuring instruments. Its reduced friction torque and precision clearance allow for efficient, quiet operation even at elevated rotational speeds. By choosing the SW brand, customers benefit from strict quality control processes that ensure dimensional accuracy (meeting ABEC-1 or higher standards) and consistent rotational reliability, minimizing downtime and maximizing the operational lifespan of critical machinery.
Key Features
Dual rubber seals (-2RS) provide robust protection against contaminants and moisture.
Inch series standard sizing suitable for replacement in US-standard machinery and instrumentation.
Manufactured from high-carbon chromium steel (52100) for exceptional durability and fatigue life.
Pre-lubricated design ensures immediate installation and extended operational life without early relubrication.
Suitable for high-speed operation in critical applications like robotics and hobby motors.
