604-2RS Sealed Miniature Ball Bearing for Precision Equipment | 4×12×4 mm

Tailored for high-speed, compact applications requiring robust protection against contaminants, the 604-2RS is a miniature single-row deep groove ball bearing equipped with dual rubber seals. Unlike open or shielded variants, the dual-lip nitrile rubber (2RS) configuration ensures that premium factory grease remains securely locked inside while blocking dirt, dust, and moisture. This makes it an indispensable component for precision devices, small electric motors, and automated systems where longevity and maintenance-free operation are top priorities.

Engineered for high-speed, precision applications within confined spaces, the 603-ZZ is a miniature single-row deep groove ball bearing equipped with dual metal shields. Unlike open heavy-duty bearings, this micro-bearing's shielded architecture retains its factory-filled grease while effectively blocking out dust, microscopic debris, and light moisture. It serves as an indispensable component for compact mechanical systems—such as small electric motors, medical instrumentation, and precision robotics—where low friction, whisper-quiet operation, and zero-maintenance reliability are required.

Designed for high-speed reliability and environmental protection, the 6010-2RS is a versatile single-row deep groove ball bearing featuring dual rubber seals. Unlike open-style bearings, the "2RS" configuration utilizes contact-type nitrile rubber seals on both sides to lock in factory-grade lubricant while acting as an impenetrable barrier against moisture, dust, and industrial debris. This makes it an ideal choice for high-precision motors, household appliances, and light-to-medium industrial machinery where external maintenance is limited and consistent uptime is required.

The 6000-2RS is a premium, rubber-sealed ball bearing engineered for environments where protection against moisture, dust, and contaminants is absolutely vital. Equipped with dual-sided synthetic rubber contact seals (2RS), this bearing actively blocks external particulate entry while keeping vital factory grease enclosed, ensuring a significantly longer service life in harsh conditions. Featuring a 10mm bore, 26mm outer diameter, and 8mm width, the 6000-2RS serves as a rugged, dependable component for electric powertrains, agricultural gear, and everyday mechanical assemblies.

The 608-2RS is an incredibly versatile, highly durable deep groove ball bearing recognized globally as the industry standard for a massive variety of applications. Measuring 8mm in bore diameter, 22mm in outer diameter, and 7mm in width, this bearing is engineered to deliver reliable radial load support while excelling in environments prone to contamination. Equipped with twin synthetic rubber seals (2RS) that make physical contact with the inner ring, the 608-2RS expertly locks in premium lubricating grease while locking out moisture, dust, and abrasive particles.

The 608 Open is a highly versatile, single-row deep groove ball bearing engineered for applications that require unhindered rotation and easy access for continuous lubrication. Manufactured without shields or seals, this "open" configuration eliminates all seal-induced contact friction, allowing for the absolute maximum rotational speed. With an industry-standard 8mm bore, a 22mm outer diameter, and a 7mm width, the unshielded 608 is the go-to structural component for high-speed electric motors, household appliances, and industrial power tools operating in clean environments.

The 606 Open is a precision-engineered, unshielded deep groove ball bearing designed specifically for applications where maximum rotational speed and unrestricted lubrication flow are required. With a 6mm bore, a 17mm outer diameter, and a 6mm width, this compact bearing operates without any seals or metal shields. This exposed design completely eliminates closure friction, allowing the 606 Open to achieve extraordinary RPMs while making it incredibly easy to continuously relubricate in oil-bath systems or enclosed gearbox housings.

The 6001-ZZ is a highly versatile, precision-engineered extra-light radial ball bearing optimized for medium-speed applications where dependable performance and compact dimensions are required. Equipped with dual non-contact metallic shields (ZZ), this bearing safely encapsulates premium factory-loaded lubricant while blocking fine dust and external particulate matter from entering the raceways. With its practical 12mm bore, 28mm outer diameter, and 8mm width, the 6001-ZZ serves as an industrial-grade solution for electric motor rotors, domestic appliances, and automated machinery demanding smooth, uninterrupted mechanical motion.