SF624
SF Series Stainless Steel Flanged Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
SF624
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
3.44 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
13 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
15 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
224 lbf
Radial static load rating
79 lbf
Limiting speed
36 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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SF624 Bearing Product Overview & Core Advantages
The SF624 is a metric single row deep groove ball bearing engineered for precision and reliability in compact applications. Constructed entirely from stainless steel (rings, balls, and cage), it offers excellent corrosion resistance. As a radial bearing, it is primarily designed to support radial loads efficiently. Its open design allows for versatile lubrication options, and its compact dimensions (4mm bore, 13mm OD) make it ideal for applications where space is at a premium, requiring a high degree of operational reliability.
SF624 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| SF624 | Standard model number for this specific bearing size (4x13x5mm). |
| Open (Seal Type) | No integral seals or shields. Allows for high-speed operation and custom lubrication schemes but requires a clean environment or external sealing. |
| ABEC1 | Specifies the precision class, indicating standard manufacturing tolerances suitable for a wide range of general applications. |
| MC3 | Denotes the radial internal clearance group (0.002mm to 0.013mm), which is a normal range for general purpose use. |
SF624 Bearing Structural Features & Performance Benefits
- All-Stainless-Steel Construction: Provides superior corrosion resistance, making the bearing suitable for harsh environments, including those with exposure to moisture or chemicals.
- Deep Groove Raceway: The geometry of the raceway is optimized not only for high radial load capacity but also for accommodating moderate axial loads in both directions.
- High-Speed Capability: The open design, combined with a stainless steel cage and precision ball complement (7 balls of 2.381mm diameter), enables a high limiting speed of 36,000 rpm.
- Standard Internal Clearance (MC3): Offers a versatile fit for most operating conditions, ensuring smooth operation without excessive preload or play.
- Flanged Outer Ring: The flange (15mm OD, 1mm thick) simplifies axial location and mounting, enhancing assembly accuracy and rigidity.
SF624 Bearing Typical Application Areas
This bearing is commonly specified in:
- Small Precision Electric Motors (e.g., drones, RC models, small fans)
- Medical and Dental Handpieces
- Office Automation Equipment (printers, scanners)
- Instrumentation and Control Devices
- Low-Torque, High-Speed Spindles
