685-ZZ Miniature Deep Groove Ball Bearing For Small Electric Motors | 5×11×5 Mm
The 685-ZZ is a Compact Double-Shielded Deep Groove Ball Bearing designed for reliable performance in small-scale mechanical applications. Featuring the standard deep groove raceway, this miniature bearing efficiently handles moderate radial loads and light axial loads in both directions. With a 5 mm bore, 11 mm outer diameter, and a square-type 5 mm width profile, it offers a robust yet space-efficient design. Equipped with double metal shields (ZZ) for contamination protection, it is well-suited for small electric motors, light-duty mechanisms, and precision devices requiring smooth operation with minimal maintenance.
685-ZZ Deep Groove Ball Bearing 5x11x5 mm | Standard Miniature Series | Double Metal Shields (ZZ)
A widely used miniature bearing built with the universal deep groove raceway geometry. Designed for stable and quiet operation at speeds up to 32,000 r/min (Grease). The 685-ZZ combines a compact footprint with integrated shielding, making it a reliable choice for various small electromechanical assemblies and light industrial applications.

Ideal for compact devices and light-duty mechanisms:
Small DC Motor Shafts
Cooling Fan Motors for Electronics
Printer and Scanner Mechanism Rollers
The square-type cross-section (equal bore and width) provides a sturdy and space-optimized structure with reliable radial load capacity for its size. Manufactured from chrome steel, it ensures durability and consistent performance in light to moderate duty cycles.
Comes standard with two metal shields (ZZ), offering effective protection against dust and debris while retaining lubrication. This makes it suitable for applications where re-lubrication is not intended or where environmental contamination is a concern.
Produced to standard miniature bearing tolerances. The precision raceway and ball geometry promote smooth, low-vibration operation, contributing to quiet performance and extended service life in small mechanisms.
| Bearing Type | Single Row Deep Groove Ball Bearing |
| ISO Dimension Series | 68 Series – Miniature Series |
| Basic Designation | 685 |
| Suffix | Double Metal Shield (ZZ) |
| Bore Diameter (d) | 5 mm |
| Outer Diameter (D) | 11 mm |
| Width (B) | 5 mm |
| Material (Races & Balls) | Chrome Steel (GCr15 / SAE 52100) |
| Precision Class | Standard / P5 Grade Available |
| Cage Material | Pressed Steel or Nylon (Standard) |
| Dynamic Load Rating (Cʳ) | 1.47 kN |
| Static Load Rating (C₀ʳ) | 0.66 kN |
| Limiting Speed (Grease) | 32,000 r/min |
| Limiting Speed (Oil) | 40,000 r/min |
| Weight (approx.) | 3.8 g |
Direct replacement for:
The 685-ZZ is supplied as a pre-lubricated, double-shielded unit. The metal shields provide a cost-effective seal against dry contaminants. For applications requiring different sealing solutions, such as rubber seals (RS, 2RS) or an open design, please inquire about availability.
"For small DC motors, light-duty mechanisms, and applications requiring a shielded miniature bearing, the 685-ZZ offers a compact, reliable, and maintenance-friendly solution. Its square profile and integrated protection make it a versatile component for space-conscious designs."
The 6801-2RS is a Compact and Sealed Deep Groove Ball Bearing designed for applications requiring reliable, maintenance-free operation in challenging environments. Featuring integrated double rubber seals (2RS) on both sides, this bearing provides excellent protection against dust, moisture, and fine contaminants. The effective sealing retains lubricant, minimizes friction, and ensures smooth, long-lasting performance. With its slender 12mm bore and narrow 5mm width, it is an ideal solution for space-constrained designs in small electric motors, gearboxes, and precision instruments.
Details
The 685-ZZ is a Compact Double-Shielded Deep Groove Ball Bearing designed for reliable performance in small-scale mechanical applications. Featuring the standard deep groove raceway, this miniature bearing efficiently handles moderate radial loads and light axial loads in both directions. With a 5 mm bore, 11 mm outer diameter, and a square-type 5 mm width profile, it offers a robust yet space-efficient design. Equipped with double metal shields (ZZ) for contamination protection, it is well-suited for small electric motors, light-duty mechanisms, and precision devices requiring smooth operation with minimal maintenance.
Details
The 686-ZZ is a High-Performance Miniature Deep Groove Ball Bearing developed for precision applications demanding reliable operation within a slim profile. Featuring dual metal shields (ZZ) on both sides, this bearing offers advanced protection against airborne particles and debris while ensuring smooth, low-torque rotation. With a 6 mm bore and a compact 5 mm width, it is engineered for small motors, compact fans, and electromechanical devices where space efficiency and contamination resistance are essential.
Details
The 688-ZZ is a Reliable Miniature Deep Groove Ball Bearing designed for applications that require a balance of compact cross-section, contamination protection, and smooth operation. Equipped with double metal shields (ZZ), it offers effective two-side defense against dust and debris while maintaining low rotational torque. With an 8 mm bore and a slim 5 mm width, this bearing is particularly suited for small electric motors, compact fans, and precision mechanisms where radial space is limited and environmental protection is valued.
Details
The 6806-2RS is a Double Rubber-Sealed Extra-Light Series Deep Groove Ball Bearing designed for applications where space constraints and contamination protection are critical. Equipped with two rubber contact seals (2RS) on both sides, it efficiently blocks dust, moisture, and debris while maintaining internal lubrication. Featuring a 30 mm bore and a slim 7 mm width, this bearing is ideal for compact assemblies, small precision instruments, and light-duty mechanical systems where reliable sealing and smooth operation are essential.
Details
The 6804-2RS is a Double Rubber-Sealed Extra-Thin Deep Groove Ball Bearing developed for compact assemblies requiring reliable protection against contaminants. Fitted with two rubber contact seals (2RS) on both sides, it effectively blocks dust, moisture, and fine particles while retaining grease for extended service. With a 20 mm bore and a slim 7 mm width, this bearing is especially suitable for applications where radial space is limited and sealing performance cannot be compromised.
Details
The 6803-2RS is a Double Rubber-Sealed, Extra-Thin Series Deep Groove Ball Bearing engineered for applications where minimal axial space and reliable contamination protection are paramount. Featuring two integrated rubber contact seals (2RS), it provides an effective barrier against dust, moisture, and fine particulates while securing internal lubrication. With a compact 17 mm bore and an exceptionally slim 5 mm width, this bearing is the ideal choice for highly space-constrained mechanisms requiring dependable sealed performance.
Details
The 6802-ZZ is a Double Metal-Shielded, Extra-Thin Series Deep Groove Ball Bearing designed for applications requiring high-speed capability and basic contamination protection in a minimal axial space. Equipped with two pressed steel shields (ZZ), it effectively guards against larger dust particles and debris while maintaining low internal friction. With a 15 mm bore and an ultra-slim 5 mm width, this bearing is an optimal choice for precision mechanisms where space is limited and lower torque is preferred over full sealing.
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