672
600 Series Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
672
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.05 g
Tolerance class
ABEC1
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
2 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
4 mm
Outside diameter tolerance
-0.008mm to 0
Width
1.2 mm
Width tolerance
-0.12mm to 0
Inner Ring Dimensions
Inner ring type
Standard
Ball & Washer Dimensions
Ball diameter
0.6 mm
Ball quantity
8
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
28 lbf
Radial static load rating
9 lbf
Limiting speed
98 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
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 7.35
/ each
In Stock
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672 Bearing Product Overview & Core Advantages
The 672 metric ball bearing is a precision-engineered single row deep groove ball bearing designed for exceptional performance in compact applications. Its fundamental design enables it to primarily support radial loads efficiently. Characterized by its extremely small dimensions (2mm bore, 4mm OD, 1.2mm width) and lightweight construction (0.05g), this bearing is ideal for applications demanding high precision, compact design, and reliable operation. Manufactured with chrome steel rings and balls, it offers excellent durability and a long service life under standard operating conditions.
672 Bearing Model Code Explained, Specifications & Naming Convention
| Model/Feature | Technical Significance |
|---|---|
| 672 | The basic bearing designation, indicating a metric, single row deep groove ball bearing with a 2mm bore diameter. |
| Open (Seal Type) | No integral seals or shields. This allows for higher limiting speeds and is suitable for applications where external sealing is provided or where the environment is clean. |
| ABEC1 | The tolerance class, defining standard precision levels for runout and dimensional accuracy, suitable for a wide range of general-purpose applications. |
| MC3 | The radial internal clearance group, indicating a "C3" clearance greater than normal. This is beneficial for applications with thermal expansion or where interference fits are used. |
672 Bearing Structural Features & Performance Benefits
- Optimized Deep Groove Raceway: The geometry of the raceways is designed for smooth operation and efficient handling of radial loads.
- High-Grade Material Construction: The use of chrome steel for both rings and balls, combined with a stainless steel cage, ensures high strength, wear resistance, and corrosion protection for the guiding cage.
- High-Speed Capability: The open design and precision construction contribute to a high limiting speed of 98,000 rpm, making it a capable high-speed bearing for miniature applications.
- Precision & Stability: The ABEC1 tolerance class and controlled radial internal clearance (0.002mm to 0.013mm) ensure consistent performance and reduced vibration.
- Broad Operating Range: With a temperature range from -30°C to 110°C, this bearing is suitable for various environmental conditions.
672 Bearing Typical Application Areas
This miniature 672 bearing is engineered for use in a diverse array of compact and precision devices, including:
- Small Precision Motors: Such as those found in drones, miniature fans, and medical devices.
- Instrumentation and Gauges: Providing smooth, low-friction rotation for sensitive measuring equipment.
- Office Automation Equipment: Including small printers, scanners, and copiers.
- RC and Model Vehicles: Used in gearboxes, wheels, and other high-speed miniature mechanisms.
- Medical and Dental Handpieces: Where small size, reliability, and the ability to handle high speeds are critical.
