SMF85
SMF Series Stainless Steel Flanged Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
SMF85
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.33 g
Tolerance class
ABEC1
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
5 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 mm
Ball quantity
8
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
53 lbf
Radial static load rating
19 lbf
Limiting speed
47.7 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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Product Overview and Core Advantages
The SMF85 is a miniature single row deep groove ball bearing designed for precision applications requiring compact dimensions and reliable performance. Engineered with all-stainless steel construction, it offers excellent corrosion resistance. Its primary advantages include a high limiting speed of 47,700 rpm and the ability to accommodate primarily radial loads, making it ideal for space-constrained, high-speed mechanisms.
SMF85 Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning |
|---|---|
| SMF85 | Standard model number denoting the bearing's core dimensions (5mm bore, 8mm OD). |
| Seal Type: Open | No integral seals or shields, allowing for higher speeds and requiring external lubrication and protection from contaminants. |
| Tolerance Class: ABEC1 | Specifies standard precision level for dimensional and running accuracy. |
| Radial Internal Clearance: MC3 | Indicates a greater-than-normal internal clearance (0.002mm to 0.013mm), suitable for applications with thermal expansion or where interference fits are used. |
Structural Features and Performance Benefits
- All-Stainless Steel Construction: The rings, balls, and cage are manufactured from stainless steel, providing superior corrosion resistance and making the bearing suitable for harsh environments and cleanroom applications.
- High-Speed Capability: The open design and precision-ground components contribute to a high limiting speed of 47,700 rpm, enabling use in demanding, fast-rotating assemblies.
- Radial Load Capacity: As a deep groove ball bearing, it is optimized to support significant radial loads (53 lbf dynamic, 19 lbf static) within its compact 2mm width.
- Flanged Outer Ring: The integrated flange (9.2mm diameter) simplifies mounting and positioning, enhancing axial location and stability in housings.
- Compliance and Material Integrity: The bearing is compliant with ROHS and REACH regulations and operates effectively within a temperature range of -30°C to 110°C.
SMF85 Bearing Typical Application Areas
- Small Precision Motors (e.g., drone motors, miniature DC motors)
- Medical and Dental Handpieces
- Optical Encoders and Scanners
- Instrumentation and Control Devices
- Office Automation Equipment (e.g., printers, scanners)
- Radio-Controlled Models and Robotics
