682-ZZ High-Speed Miniature Ball Bearing with Dual Metal Shields | 2×5×2.3 mm
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.
682-ZZ Deep Groove Ball Bearing 2×5×2.3 mm | 6800 Series Miniature | Double Metal Shielded
Designed for low-torque and high-frequency operation, this shielded micro-bearing features ultra-precise raceway finishing to ensure whisper-quiet performance. Capable of reaching speeds up to 75,000 r/min under oil lubrication (or 63,000 r/min with grease), it excels in handling radial and light axial loads. It is a premier choice for engineers designing high-speed precision hardware where energy efficiency and thermal stability are prioritized over heavy environmental sealing.

Ideally suited for micro-scale rotating components and high-speed assemblies requiring low-friction, maintenance-free performance:
Forged from premium-grade chrome steel (GCr15), this bearing features a slim 2.3 mm width. This space-saving configuration allows for the downsizing of complex mechanical systems, enabling higher power density in micro-electronic devices without compromising on the axial rigidity of the shaft.
The 682-ZZ utilizes non-contact metal shields that do not touch the inner ring. This design minimizes frictional heat and starting torque, allowing the bearing to operate at significantly higher speeds than sealed versions while maintaining a barrier against dust and airborne particles.
Each 682-ZZ bearing is manufactured to P5 precision tolerances and strict vibration standards. The precision-ground raceways and high-quality steel balls ensure minimal vibration and noise, which is vital for the long-term reliability of sensitive sensors and high-precision medical tools.
| Bearing Type | Single Row Deep Groove Ball Bearing |
| ISO Dimension Series | 6800 Series – Miniature |
| Basic Designation | 682 |
| Suffix | ZZ (Double Metal Shields) |
| Bore Diameter (d) | 2 mm |
| Outer Diameter (D) | 5 mm |
| Width (B) | 2.3 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) | 167 N |
| Static Load Rating (C₀ʳ) | 51 N |
| Limiting Speed (Grease) | 63,000 r/min |
| Limiting Speed (Oil) | 75,000 r/min |
| Weight (approx.) | 0.17 g |
Equivalent parts from global industry leaders:
The 682-ZZ is the preferred solution for engineers who require maximum speed and minimal energy loss in a miniature footprint. Its metal shields offer durability and thermal resistance, making it suitable for high-speed micro-motors that generate internal heat.
For applications requiring corrosion resistance in medical or outdoor environments, stainless steel versions (S682-ZZ) are also available. For environments with high dust or moisture where speed is less critical, the contact-sealed version (682-2RS) is the recommended alternative for maximum protection.
"Where high-velocity rotation meets microscopic precision, the 682-ZZ provides the frictionless performance and technical reliability required for today’s most advanced micro-engineering projects."
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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