685zz
600 Series Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
685zz
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
1.93 g
Tolerance class
ABEC1
Seal type
Shielded
For load direction
Radial
Main Dimensions
Bore diameter
5 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
11 mm
Outside diameter tolerance
-0.008mm to 0
Width
5 mm
Width tolerance
-0.12mm to 0
Inner Ring Dimensions
Inner ring type
Standard
Ball & Washer Dimensions
Ball diameter
1.588 mm
Ball quantity
8
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
137 lbf
Radial static load rating
51 lbf
Limiting speed
45 X 1000 rpm
Lubrication
Required
Radial internal clearance
0.002mm to 0.013mm
Radial internal clearance
MC3
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Stainless Steel
Shield material
300 Series Stainless Steel
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 1.13
/ each
In Stock
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685zz Bearing Product Overview & Core Advantages
The 685zz is a miniature deep groove ball bearing designed for compact applications requiring reliable performance. This single row construction with shielded protection offers an excellent balance of size, load capacity, and durability. Engineered to primarily handle radial loads, it is characterized by its small bore diameter of 5 mm and lightweight design, making it ideal for high-speed operations in confined spaces. Manufactured to ABEC1 precision class, it provides consistent performance for a wide range of industrial and commercial applications.
685zz Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 685 | The basic bearing designation, indicating the size series and bore diameter (5mm). |
| zz | Denotes shielded on both sides. The shields protect the internal components from large contaminants while allowing for high-speed operation. |
685zz Bearing Structural Features & Performance Benefits
- Compact & Lightweight Design: With an outside diameter of just 11 mm and a width of 5 mm, this bearing is engineered for space-constrained applications. Its low weight of 1.93 g minimizes rotational inertia.
- Robust Load Capacity: The deep groove raceway and chrome steel construction enable efficient handling of radial dynamic loads up to 137 lbf and radial static loads up to 51 lbf.
- High-Speed Capability: The combination of a stainless steel cage, precision-ground balls, and optimized internal geometry supports a limiting speed of 45,000 rpm.
- Enhanced Contamination Protection: The 300 series stainless steel shields on both sides help retain lubrication and exclude larger particulate matter, extending service life.
- Precision & Consistency: Manufactured to ABEC1 tolerance standards with a controlled radial internal clearance (MC3 group), ensuring smooth and reliable operation.
685zz Bearing Typical Application Areas
This bearing is widely used in applications demanding small bearing dimensions and reliable performance, including:
- Small electric motors and miniature gearboxes
- Precision instruments and optical devices
- Computer cooling fans and small pumps
- Office automation equipment and 3D printers
- Radio-controlled models and drones
