SMF84
SMF Series Stainless Steel Flanged Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
SMF84
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.47 g
Tolerance class
ABEC1
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
4 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
8 mm
Outside diameter tolerance
-0.008mm to 0
Width
2 mm
Width tolerance
-0.12mm to 0
Inner Ring Dimensions
Inner ring type
Standard
Outer Ring Dimensions
Flange outer diameter
9.2 mm
Flange thickness
0.6 mm
Ball & Washer Dimensions
Ball diameter
1.2 mm
Ball quantity
7
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
68 lbf
Radial static load rating
23 lbf
Limiting speed
50.4 X 1000 rpm
Lubrication
Required
Radial internal clearance
MC3
Radial internal clearance
0.002mm to 0.013mm
Materials
Ring material
Stainless Steel
Ball material
Stainless Steel
Cage material
Stainless Steel
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 1.59
/ each
In Stock
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SMF84 Bearing Product Overview & Core Advantages
The SMF84 is a metric single row deep groove ball bearing engineered for precision applications requiring compact dimensions and reliable performance. Constructed entirely from stainless steel, it offers excellent corrosion resistance. Its primary advantages include a high limiting speed of 50,400 rpm and the ability to accommodate primarily radial loads. The open design allows for versatile lubrication options, making it suitable for high-precision and high-reliability scenarios where space is constrained.
SMF84 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| SMF84 | Basic model number denoting the specific bearing dimensions (4mm bore, 8mm OD, 2mm width). |
| (No Suffix) | Indicates an open (unsealed) bearing, requiring external lubrication. The standard MC3 radial internal clearance and ABEC1 tolerance class are implied. |
SMF84 Bearing Structural Features & Performance Benefits
- High-Speed Capability: The optimized single row design with 7 precision balls and a stainless steel cage contributes to a high limiting speed, making it an effective high-speed bearing for miniature applications.
- Radial Load Capacity: The deep groove raceway is engineered to efficiently support radial loads, with a dynamic load rating of 68 lbf.
- Corrosion Resistance & Cleanliness: The all-stainless steel construction (rings, balls, cage) ensures excellent resistance to corrosion and is suitable for clean environments. It is compliant with ROHS and REACH.
- Precision & Stability: Manufactured to ABEC1 precision class and MC3 clearance, this precision bearing offers consistent running accuracy and low noise operation.
- Flanged Design (Optional): The specification includes a flange outer diameter, which facilitates secure and simplified mounting, enhancing positional accuracy.
SMF84 Bearing Typical Application Areas
This bearing is ideally suited for compact, high-speed devices, including:
- Small precision motors and spindles
- Medical and dental handpieces
- Optical encoders and instrumentation
- Miniature fans and drones
- Office automation equipment
