The R2-5 Open is a precision-engineered, inch-dimensional miniature deep groove ball bearing developed specifically for applications demanding absolute minimum rotational resistance. With a standard 1/8" bore diameter, this bearing utilizes an entirely unshielded (open) architecture. By eliminating the physical barriers of shields or rubber seals, the R2-5 Open achieves a zero-contact environment that eradicates frictional drag. This design is highly favored for mechanisms housed within clean, enclosed environments or oil-bath systems, where maximum RPM and rapid heat dissipation are critical for system performance.

The R166-ZZ is a highly versatile inch-series miniature ball bearing designed for environments where both reliable rotation and protection from airborne debris are critical. By utilizing a double-shielded ("ZZ") configuration, this bearing effectively locks in factory-applied grease while blocking dust, dirt, and fine particulate matter from entering the raceways. With its standard 3/16-inch bore, the R166-ZZ is an essential, maintenance-free component for compact electric motors, hobbyist models, and precision commercial equipment requiring sustained, smooth performance without regular relubrication.

The R133 Open is a sub-miniature, single-row deep groove ball bearing specifically manufactured for environments that demand the absolute lowest possible friction torque. Built to imperial (inch) dimensions, this incredibly small bearing features a completely unshielded and unsealed design. By entirely exposing the inner raceways and rolling elements, the R133 Open eliminates the drag typically caused by protective shields. This unrestricted configuration allows for extreme free-spinning capabilities and rapid heat dissipation, making it an essential component for highly sensitive precision instruments housed in clean, debris-free environments.

Specifically developed for compact spaces and high-speed operations, the 694-ZZ is a single-row miniature deep groove ball bearing equipped with double metal shields. With a 4 mm bore, 11 mm outer diameter, and a slim 4 mm profile, this micro-bearing is engineered to handle radial loads and light axial loads efficiently. The "ZZ" configuration means it is pre-lubricated with high-quality grease for life, offering excellent protection against dust and particle contamination while eliminating the need for periodic maintenance. Crafted from premium chrome steel, the 694-ZZ guarantees exceptional rotational accuracy and low friction for your most delicate mechanisms.

The R188-ZZ is a precision miniature ball bearing featuring inch-dimensional specifications, engineered for compact mechanisms requiring smooth operation at high rotational speeds. Featuring double metal shields (ZZ), this miniature bearing provides effective protection against contaminant ingress while maintaining grease retention in space-constrained assemblies. With a 6.35mm bore (1/4 inch), 12.7mm outer diameter (1/2 inch), and 3.175mm width (1/8 inch), it serves as the ideal solution for RC hobby applications, dental handpieces, 3D printer components, and precision rollers where consistent performance under light loads is essential.

The MR128-ZZ is a precision-engineered miniature ball bearing designed for high-velocity mechanical systems where low starting torque and minimal heat generation are essential. Featuring dual non-contact metal shields (ZZ), this micro-bearing provides reliable protection against larger debris while allowing the internal lubricant to operate at maximum efficiency. With an 8mm bore, a 12mm outer diameter, and a 3.5mm width, it serves as a critical high-performance component for cooling fans, high-frequency micro motors, and precision hobbyist electronics.

The 673-ZZ is a compact and lightweight miniature deep groove ball bearing engineered for precision applications where space is limited and reliability is paramount. Featuring double metal shields (ZZ) , this miniature bearing provides effective protection against dust ingress and ensures the retention of lubricating grease in confined assemblies. With a 3mm bore, 6mm outer diameter, and 2.5mm width, it is the ideal solution for small electric motors, dental handpieces, 3D printer components, and radio-controlled models where smooth, consistent operation under light loads is required.

The 605 ZZ is a Premium Miniature Deep Groove Ball Bearing engineered for reliable performance in compact, high-speed devices. Featuring double metal shields (ZZ) on both sides, this metric bearing offers enhanced protection against dust and debris while maintaining low running torque. With a 5mm bore, it is ideal for small motors, encoders, office automation equipment, and precision instruments where space is at a premium.

The 626 Z is a Premium Miniature Deep Groove Ball Bearing engineered for high-speed precision applications. Featuring a single metal shield (Z), this metric bearing balances protection against debris with low-friction performance. With a 6mm bore, it is ideal for small motors, power tools, and precision instrumentation requiring a compact footprint.