691xzz
600 Series Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
691xzz
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.25 g
Tolerance class
ABEC1
Seal type
Shielded
For load direction
Radial
Main Dimensions
Bore diameter
1.5 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
5 mm
Outside diameter tolerance
-0.008mm to 0
Width
2.6 mm
Width tolerance
-0.12mm to 0
Inner Ring Dimensions
Inner ring type
Standard
Ball & Washer Dimensions
Ball diameter
0.6 mm
Ball quantity
6
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
32 lbf
Radial static load rating
9 lbf
Limiting speed
85 X 1000 rpm
Lubrication
Required
Radial internal clearance
MC3
Radial internal clearance
0.002mm to 0.013mm
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:
$ 12.25
/ each
In Stock
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691xzz Bearing Product Overview & Core Advantages
The 691xzz is a miniature deep groove ball bearing designed for applications demanding compact size, reliable performance, and high-speed operation. As a metric single row bearing, it excels in handling primarily radial loads and is characterized by its shielded design for contaminant protection. Its small bore diameter of 1.5 mm and overall compact dimensions make it an ideal choice for high-precision, space-constrained mechanisms requiring smooth rotation and long service life.
691xzz Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 691 | The basic bearing series designation, indicating a specific size and internal geometry for a miniature deep groove ball bearing. |
| zz | Denotes that the bearing is equipped with shields on both sides. These non-contact shields, made of 300 Series Stainless Steel, protect the internal components from large contaminants while minimizing friction. |
691xzz Bearing Structural Features & Performance Benefits
- High-Speed Capability: The combination of a stainless steel cage, precision ABEC1 tolerance class, and optimized internal geometry enables a high limiting speed of 85,000 rpm, making it suitable for demanding high-speed applications.
- Robust Construction: Manufactured from chrome steel for both rings and balls, this bearing offers excellent durability and wear resistance. The deep groove raceway is engineered for efficient radial load distribution.
- Controlled Internal Clearance: The specified MC3 radial internal clearance (0.002mm to 0.013mm) ensures optimal operational performance, accounting for thermal expansion in precision assemblies.
- Enhanced Protection: The shielded (zz) design provides effective protection against dust and debris, extending bearing life and reducing maintenance needs. Note that lubrication is required for optimal performance.
691xzz Bearing Typical Application Areas
This miniature bearing is engineered for use in:
- Small Precision Motors (e.g., drone motors, miniature DC motors)
- Medical and Dental Handpieces
- Office Automation Equipment (e.g., printers, scanners)
- Instrumentation and Gauges
- High-Speed Spindles in small-scale machining
