681-ZZ Ultra-Miniature Shielded Ball Bearing for High-Speed Precision | 1×3×1 mm
The 681-ZZ is a high-precision, dual-shielded miniature deep groove ball bearing designed for microscopic mechanical assemblies where high rotational velocity and low frictional torque are critical. With an incredibly small 1 mm bore and 3 mm outer diameter, this component provides stable support in ultra-compact environments. Featuring two non-contact metal shields (ZZ), it offers excellent protection against larger debris while retaining factory-grade lubrication, making it the premier choice for high-speed micro-motors and sensitive optical devices.
681-ZZ Deep Groove Ball Bearing 1×3×1 mm | 6800 Ultra-Small Series | Double Metal Shielded
Optimized for high-frequency performance, this shielded bearing is engineered with precision-honed raceways to minimize heat generation during rapid rotation. Unlike sealed versions, the metal shields allow for significantly higher operating speeds, reaching up to 100,000 r/min with grease, while maintaining a low-drag profile. It is a robust, space-saving solution for precision hardware where housing volume is extremely limited but high-speed reliability is non-negotiable.

Ideally suited for micro-scale rotating assemblies and precision-engineered devices requiring low-friction, high-speed performance:
Equipped with dual non-contact steel shields (ZZ), this bearing is designed to keep out contaminants without the friction associated with rubber seals. This configuration allows for the highest possible rotational speeds and lowest starting torque, ensuring smooth startup in low-power micro-applications.
Crafted from premium high-carbon chrome steel (GCr15), the 681-ZZ maintains a microscopic 1 mm width. This ultra-thin profile enables engineers to design lighter, smaller, and more efficient mechanical systems without compromising on the axial stability of the rotating shaft.
Every component is manufactured to strict P5 precision tolerances and V-Class vibration standards. The precision-balanced balls and refined raceways ensure that the bearing operates with minimal noise and thermal expansion, even when reaching speeds exceeding 90,000 RPM.
| Bearing Type | Single Row Deep Groove Ball Bearing |
| ISO Dimension Series | 6800 Series – Ultra-Miniature |
| Basic Designation | 681 |
| Suffix | ZZ (Double Metal Shields) |
| Bore Diameter (d) | 1 mm |
| Outer Diameter (D) | 3 mm |
| Width (B) | 1 mm |
| Material (Races & Balls) | Chrome Steel (GCr15 / SAE 52100) |
| Precision Class | Standard (P0) / P6 or P5 Available Upon Request |
| Cage Material | Pressed Stainless Steel Crown Cage |
| Dynamic Load Rating (Cʳ) | 0.08 kN |
| Static Load Rating (C₀ʳ) | 0.025 kN |
| Limiting Speed (Grease) | 100,000 r/min |
| Limiting Speed (Oil) | 130,000 r/min |
| Weight (approx.) | 0.03 g |
Common industry equivalents for global sourcing:
The 681-ZZ is the industry standard for high-performance micro-mechanics where operational speed takes precedence over heavy environmental sealing. The metal shields provide a durable barrier against dust in relatively clean laboratory or electronic environments while allowing the bearing to spin freely with negligible resistance.
For specialized medical or aerospace needs, this model is also available in a stainless steel variant (S681-ZZ) to provide superior resistance to corrosion and oxidation. For applications requiring maximum sealing against fine powders or liquids, the contact-sealed version (681-2RS) is the recommended alternative.
"When your project demands the ultimate balance between microscopic size and high-velocity performance, the 681-ZZ delivers unrivaled precision for the world's most delicate mechanical systems."
Engineered for microscopic applications where space is an absolute premium, the 681-2RS is a highly compact, double rubber-sealed miniature deep groove ball bearing. Boasting a minuscule 1 mm bore and 3 mm outer diameter, this ultra-miniature component delivers exceptional rotational precision in micro-devices. The integration of dual non-removable contact seals (2RS) ensures the internal lubricant is strictly contained while simultaneously blocking microscopic debris, guaranteeing prolonged reliability in highly sensitive micro-electronics and precision instruments.
Details
The 681-ZZ is a high-precision, dual-shielded miniature deep groove ball bearing designed for microscopic mechanical assemblies where high rotational velocity and low frictional torque are critical. With an incredibly small 1 mm bore and 3 mm outer diameter, this component provides stable support in ultra-compact environments. Featuring two non-contact metal shields (ZZ), it offers excellent protection against larger debris while retaining factory-grade lubrication, making it the premier choice for high-speed micro-motors and sensitive optical devices.
Details
The 682-2RS is a high-performance, double rubber-sealed miniature deep groove ball bearing specifically designed for applications where rotational accuracy is paramount in a tiny footprint. Featuring a 2 mm bore and a 5 mm outer diameter, this precision component is engineered to deliver reliable support in micro-mechanical systems. Equipped with dual contact rubber seals (2RS), it offers superior protection against environmental contaminants while ensuring the internal lubricant remains sealed for the duration of the bearing's service life.
Details
The 682-ZZ is a precision-engineered, double-shielded miniature deep groove ball bearing designed for high-velocity applications where minimal friction is a critical requirement. With its compact 2 mm bore and 5 mm outer diameter, this bearing provides exceptional rotational stability in micro-scale assemblies. Equipped with two non-contact metal shields (ZZ), it effectively prevents the ingress of larger debris and retains factory-applied grease without the frictional drag associated with contact seals, making it ideal for high-RPM micro-motors.
Details
The 683-ZZ is a Premium Miniature Single Row Deep Groove Ball Bearing designed for ultra-high-speed rotation and low-friction performance in compact mechanical assemblies. Featuring a double-shielded configuration (ZZ), this micro-bearing effectively locks in pre-filled grease while keeping out dust and microscopic debris. With a highly compact 3mm bore and a 7mm outer diameter, the 683-ZZ delivers exceptional reliability for precision instruments, micro-motors, and advanced robotics where space is strictly limited but performance requirements are high.
Details
The 684-ZZ is a Premium Miniature Single Row Deep Groove Ball Bearing engineered for reliable, high-speed rotation in space-constrained mechanical environments. Characterized by its double-shielded design (ZZ), this bearing is expertly sealed with twin metallic shields that lock in essential lubrication while repelling airborne dust and fine particulates. Featuring a versatile 4mm bore and a compact 9mm outer profile, the 684-ZZ is the definitive solution for micro-motors, precision instruments, and automated assemblies demanding superior operational stability without adding excess bulk.
Details
The 685-2RS is a premium-grade miniature deep groove ball bearing designed for applications requiring high rotational speeds, low friction, and reliable protection against environmental contaminants. Equipped with dual-contact rubber seals (2RS), this model ensures superior lubricant retention while preventing the ingress of dust and moisture. With a compact 5mm bore and an 11mm outer diameter, the 685-2RS is the preferred choice for precision instruments, small-scale robotics, and high-tech electronic devices where space is limited but performance is critical.
Details
The 686-2RS is a high-performance miniature ball bearing engineered for versatility and durability in compact mechanical assemblies. Featuring a 6mm bore and 13mm outer diameter, this model is equipped with dual-contact rubber seals (2RS) that provide an airtight defense against contaminants while locking in premium synthetic lubrication. Designed for engineers and manufacturers who require a balance of low torque and high protection, the 686-2RS excels in environments where precision and maintenance-free operation are paramount.
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