SF634 2rs
SF Series Stainless Steel Flanged Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
SF634 2rs
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
5.98 g
Tolerance class
ABEC1
Seal type
Sealed
For load direction
Radial
Main Dimensions
Bore diameter
4 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
16 mm
Outside diameter tolerance
-0.008mm to 0
Width
5 mm
Width tolerance
-0.12mm to 0
Inner Ring Dimensions
Inner ring type
Standard
Outer Ring Dimensions
Flange outer diameter
18 mm
Flange thickness
1 mm
Ball & Washer Dimensions
Ball diameter
2.381 mm
Ball quantity
7
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
231 lbf
Radial static load rating
85 lbf
Limiting speed
32.4 X 1000 rpm
Lubrication
Required
Radial internal clearance
0.002mm to 0.013mm
Radial internal clearance
MC3
Materials
Ring material
Stainless Steel
Ball material
Stainless Steel
Cage material
Stainless Steel
Shield material
Nitrile Rubber
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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SF634 2rs Bearing Product Overview & Core Advantages
The SF634 2RS is a metric single row deep groove ball bearing designed for exceptional performance in compact applications. This sealed bearing features a robust stainless steel construction and is pre-lubricated, making it ready for immediate installation. Its primary advantage lies in its ability to handle radial loads efficiently while offering reliable operation within a wide temperature range. The integrated rubber seals (2RS) provide excellent protection against contaminants, ensuring long service life and making it a high-reliability component for demanding environments.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| SF634 | Basic bearing designation, indicating the specific bearing size with a 4mm bore, 16mm outside diameter, and 5mm width. |
| 2RS | Denotes double rubber seals (one on each side). This provides superior protection against dust, moisture, and other contaminants, contributing to the bearing's maintenance-free characteristics. |
SF634 2rs Bearing Structural Features & Performance Benefits
- High-Quality Construction: Manufactured entirely from stainless steel (rings, balls, and cage), this bearing offers excellent corrosion resistance and durability, suitable for various industrial environments.
- Optimized Internal Geometry: The deep groove raceway and 7 precision balls (2.381 mm diameter) are engineered for smooth operation and efficient radial load distribution.
- Effective Sealing: The double-contact nitrile rubber seals (2RS) effectively retain lubrication and exclude contaminants, significantly extending the bearing's operational life and reliability.
- Precision & Stability: Built to ABEC1 tolerance class with a controlled radial internal clearance (MC3 group), ensuring consistent performance and running accuracy.
SF634 2rs Bearing Typical Application Areas
- Small Electric Motors: Ideal for use in miniature DC motors, stepper motors, and fans.
- Precision Instruments: Suitable for medical devices, optical equipment, and measuring instruments requiring smooth, low-noise operation.
- Office Automation Equipment: Commonly found in printers, scanners, and copiers.
- Radio-Controlled Models & Hobbyist Projects: Used in drones, RC cars, and other small mechanical assemblies.
- Light-Duty Industrial Drives: Applicable in small conveyors, pumps, and gearboxes where compact size and reliability are key.
