674 Open Ultra-Miniature Ball Bearing | High-Velocity Unshielded Design | 4×7×2.5 mm

Designed specifically for heavily constrained spatial requirements, the 676-ZZ is a single-row miniature ball bearing that delivers exceptional high-speed capabilities within a microscopic footprint. Equipped with dual non-contact pressed steel shields (ZZ), this 6x10x3 mm component provides robust protection against particulate matter while securely retaining the factory-applied lubrication. Its ultra-lightweight, 1-gram architecture is specifically engineered for micro-motors, precision medical instrumentation, and compact robotics where eliminating excess rotational mass is critical to overall system efficiency.

Engineered for applications where absolute minimum rotational resistance is the primary objective, the 676 Open is a premium single-row miniature ball bearing. Featuring an unshielded (open) architecture, this 6x10x3 mm component offers zero contact friction from seals or shields, making it the ultimate choice for ultra-high-speed operations. Weighing just 1 gram, this micro-bearing is designed to be housed within sealed gearboxes, cleanrooms, or systems utilizing external oil-bath lubrication, ensuring peak mechanical efficiency without parasitic drag.

Engineered for applications with strict spatial limitations, the 675-ZZ is a premium single-row micro ball bearing offering outstanding rotational speed in an ultra-compact form factor. Featuring twin non-contact metal shields (ZZ), this 5x8x2.5 mm bearing ensures long-lasting internal lubrication while successfully blocking environmental contaminants. Weighing a mere 0.4 grams, this featherweight component is the ideal choice for micro-drones, delicate medical devices, and intricate robotics where minimizing rotational inertia is essential for peak performance.

Engineered to deliver uncompromising reliability in environments prone to dust and moisture, the 675-2RS is a premium miniature ball bearing that combines an ultra-compact footprint with robust ingress protection. Featuring dual NBR (Nitrile Butadiene Rubber) contact seals, this 5x8x2.5 mm component effectively locks in the factory-filled lubricant while blocking out harmful external contaminants. Weighing exactly 0.4 grams, this highly durable micro-bearing is the definitive solution for outdoor robotics, miniature fluid pumps, and RC vehicles where environmental exposure frequently compromises standard unsealed components.

The 675 Open is an ultra-miniature, single-row ball bearing designed for high-precision applications where minimal starting torque and maximum rotational velocity are paramount. Without the added friction of seals or shields, this 5x8x2.5 mm component offers an unobstructed path for lubrication, making it ideal for systems utilizing oil mist or oil bath lubrication. With a total weight of only 0.4 grams, the 675 open type is the preferred choice for high-speed spindles, precision measuring instruments, and vacuum environments where seal outgassing or drag must be strictly avoided.

The 674-ZZ is one of the smallest standard industrial components available, a single-row miniature ball bearing designed for high-frequency rotational stability within a microscopic framework. Outfitted with dual integrated metal shields (ZZ), this 4x7x2.5 mm bearing offers a maintenance-free solution by retaining high-grade synthetic grease while shielding the internal raceways from airborne debris. Its featherweight 0.32-gram construction is specifically optimized for micro-drone gimbals, optical sensors, and precision cooling fans where minimizing starting torque is essential for system responsiveness.

The 674 Open is a precision-engineered, single-row miniature ball bearing designed for applications where absolute minimal rotational resistance and maximum speed are the primary requirements. By removing the physical barriers of shields or seals, this 4x7x2.5 mm component allows for unrestricted lubrication flow and zero "drag," making it perfect for high-frequency vibration tools and precision instruments. With a featherweight mass of just 0.3 grams, the 674 open type excels in energy-sensitive systems where reducing mechanical friction is critical to extending battery life and improving motor response.

The 672 Open is an elite-grade micro-miniature ball bearing designed for applications where spatial constraints are extreme and rotational mass must be kept to an absolute minimum. As an unshielded, open-type component, this 2×5×1.5 mm bearing provides a "zero-drag" environment, allowing for instantaneous acceleration and high-frequency oscillation. Weighing approximately 0.1 grams, the 672 is the preferred choice for high-precision laboratory instrumentation, micro-optics, and nano-robotics where the slightest mechanical resistance can compromise system accuracy.