683-ZZ Miniature Deep Groove Ball Bearing Shielded High-Speed | 3×7×3 mm
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.
683-ZZ Deep Groove Ball Bearing 3×7×3 mm | ISO 68 Series – Miniature | Shielded Design (ZZ)
This highly adaptable miniature bearing is precision-engineered to accommodate moderate radial loads alongside minor axial loads in both directions. Outfitted with dual metal shields, the 683-ZZ is permanently lubricated and maintenance-free, excelling in rapid-motion environments with operating speeds capable of reaching up to 58,000 r/min (Grease). It functions as a critical rotational core for lightweight equipment, ensuring seamless operation, minimized heat generation, and an extended lifespan in enclosed systems.

Ideal for compact mechanical assemblies and high-speed micro-rotary systems requiring strict dimensional accuracy and reliable performance:
Manufactured with strict dimensional tolerances (Standard P0 / P5 available), the 683-ZZ utilizes finely polished raceways and a low-friction steel cage. This internal geometry drastically reduces rotational resistance, allowing the bearing to operate quietly and smoothly at speeds up to 58,000 RPM without overheating.
Equipped with pressed steel shields on both sides, this model offers excellent defense against particulate contamination. The non-contact shield design ensures there is no added friction torque, making it the superior choice for environments where maintenance access is difficult and high-speed efficiency is required.
Despite its ultra-compact 68 Series dimensions (3×7×3 mm), the 683-ZZ provides a stable dynamic load rating of 0.311 kN. The high-quality GCr15 chrome steel construction ensures it withstands continuous rotational stress, resisting wear and deformation in continuous-duty miniature applications.
| Bearing Type | Single Row Deep Groove Ball Bearing |
| ISO Dimension Series | 68 Series – Miniature |
| Basic Designation | 683 |
| Suffix | ZZ (Double Metal Shields) |
| Bore Diameter (d) | 3 mm |
| Outer Diameter (D) | 7 mm |
| Width (B) | 3 mm |
| Material (Races & Balls) | Chrome Steel (GCr15 / SAE 52100) |
| Precision Class | Standard (P0) / P6 or P5 Available Upon Request |
| Cage Material | Steel Stamped |
| Dynamic Load Rating (Cʳ) | 0.311 kN |
| Static Load Rating (C₀ʳ) | 0.112 kN |
| Limiting Speed (Grease) | 58,000 r/min |
| Limiting Speed (Oil) | 67,000 r/min |
| Weight (approx.) | 0.45 g |
Common manufacturer equivalents include:
The 683-ZZ is factory-supplied with dual metal shields (ZZ) and pre-lubricated with high-performance grease, providing a ready-to-mount solution for dust-prone, high-speed applications. If your assembly requires protection against liquid ingress rather than just dry contaminants, this model can be customized with rubber contact seals (683-2RS). For extreme high-speed or ultra-low friction needs, open variants (683) without shields are also available.
"Select the 683-ZZ Shielded Bearing for miniature precision applications where rapid rotation, compact sizing, and zero-maintenance longevity are essential."
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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