SF635 2rs
SF Series Stainless Steel Flanged Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
SF635 2rs
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
9.65 g
Tolerance class
ABEC1
Seal type
Sealed
For load direction
Radial
Main Dimensions
Bore diameter
5 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
19 mm
Outside diameter tolerance
-0.008mm to 0
Width
6 mm
Width tolerance
-0.12mm to 0
Inner Ring Dimensions
Inner ring type
Standard
Outer Ring Dimensions
Flange outer diameter
22 mm
Flange thickness
1.5 mm
Ball & Washer Dimensions
Ball diameter
3.5 mm
Ball quantity
6
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
402 lbf
Radial static load rating
145 lbf
Limiting speed
28.8 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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SF635 2rs Bearing Product Overview & Core Advantages
The SF635 2RS is a metric single row deep groove ball bearing designed for exceptional reliability in compact applications. Featuring integrated rubber seals (2RS) on both sides, it provides superior protection against contaminants while retaining lubrication. Manufactured entirely from stainless steel (rings, balls, and cage), it offers excellent corrosion resistance. This bearing is engineered to support primarily radial loads and is characterized by its low friction, quiet operation, and long service life, making it a robust choice for applications demanding high precision and durability.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| SF635 | Basic bearing designation, indicating a specific size series with a 5 mm bore, 19 mm OD, and 6 mm width. |
| 2RS | Signifies contact-type Nitrile Rubber Seals on both sides of the bearing. This provides effective exclusion of contaminants and retention of lubricant, enhancing bearing life in harsh environments. |
SF635 2rs Bearing Structural Features & Performance Benefits
- Robust Sealed Construction: The dual 2RS rubber seals ensure the bearing is protected from dust, moisture, and other particulates, making it suitable for applications where cleanliness is critical. This design also retains lubricant effectively, contributing to a longer maintenance interval.
- Corrosion Resistance: Constructed entirely from stainless steel, including the rings, balls, and cage, this bearing is ideal for use in environments exposed to water, chemicals, or other corrosive agents.
- Precision & Smooth Operation: Built to ABEC1 tolerance class with a controlled radial internal clearance (MC3 group), it ensures consistent performance, low noise, and low vibration.
- High-Speed Capability: With a limiting speed of 28,800 rpm, it is well-suited for high-speed applications such as small motors and precision spindles.
SF635 2rs Bearing Typical Application Areas
This versatile bearing is commonly specified in:
- Small Electric Motors (e.g., drones, hand tools, cooling fans)
- Precision Instruments and medical devices
- Food Processing & Packaging Machinery (due to stainless steel construction)
- Office Automation Equipment (printers, scanners)
- Various machinery requiring reliable radial load support in a compact, sealed package.
