SF040AR0
3/4" Stainless Steel Constant Section Bearings
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Part No.
Part No.
SF040AR0
Basic Information
Bearing type
Ball
System of measurement
Inch
Thin section bearings type
Reali-Slim Stainless Steel
Construction
Single Row
Weight
1.92 lbs
Tolerance class
ABEC-1
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
4"
Bore diameter tolerance
-0.0008"– 0"
Outside diameter
5.5"
Outside diameter tolerance
-0.0006"– 0"
Width
0.75"
Width tolerance
+.000 –.005"
Contact angle
30 °
Inner Ring Dimensions
Shoulder diameter inner ring
4.555"
Outer Ring Dimensions
Outer ring large-side face inner diameter
5.115"
Outer ring small-side face inner diameter
4.945"
Performance
Temperature range
-30°C to 110 °C
Radial dynamic load rating
3736 lbf
Radial static load rating
6350 lbf
Axial static load rating
8420 lbf
Static load moment
18340 lbf
Lubrication
Lubricated
Radial internal clearance
0.0000 – 0.0005"
Materials
Ring material
Stainless Steel
Ball material
Stainless Steel
Cage material
Brass
Environment & Compliance
ROHS
Compliant
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 300.21
/ each
In Stock
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SF040AR0 Bearing Product Overview & Core Advantages
The SF040AR0 is a high-performance thin section angular contact ball bearing engineered for applications demanding precision, space efficiency, and reliable operation under combined loads. Manufactured from stainless steel with a brass cage, this single-row bearing is designed to accommodate significant axial loads in one direction while simultaneously handling radial loads, thanks to its 30° contact angle. Its ABEC-1 precision class and consistent dimensional stability make it an ideal choice for high-reliability, compact assemblies where weight and cross-section are critical constraints.
SF040AR0 Bearing Model Code Explained, Specifications & Naming Convention
The model number SF040AR0 can be broken down as follows:
- SF: Indicates the Reali-Slim thin-section bearing series.
- 040: Specifies the nominal bore diameter of 4 inches.
- A: Denotes the Angular Contact design with a 30° contact angle.
- R0: Signifies an Open (unsealed) construction and standard radial internal clearance.
SF040AR0 Bearing Structural Features & Performance Benefits
- High Load Capacity & Rigidity: The angular contact design and stainless steel construction provide high rigidity, enabling the bearing to support substantial combined radial and axial static loads (6350 lbf radial, 8420 lbf axial).
- Precision & Stability: Built to ABEC-1 tolerance standards with tight bore, OD, and width tolerances, ensuring precise fitment and smooth, accurate rotation in precision instruments.
- Space & Weight Optimization: As part of the Reali-Slim series, it features an extremely thin cross-section (0.75" width for a 4" bore), offering significant space and weight savings (1.92 lbs) without sacrificing performance.
- Corrosion Resistance & Durability: The use of stainless steel for rings and balls provides excellent corrosion resistance, making it suitable for harsh environments and extending service life.
- Wide Operating Range: The standard lubrication and material selection allow for a functional temperature range from -30°C to 110°C.
SF040AR0 Bearing Typical Application Areas
This bearing is ideally suited for applications requiring a compact, high-precision, and corrosion-resistant solution for managing combined loads. Key industries and equipment include:
- Robotics: Joint and actuator bearings.
- Aerospace & Defense: Gimbals, control mechanisms, and radar systems.
- Medical Equipment: Surgical robots, imaging devices (CT/MRI scanners), and diagnostic instruments.
- Semiconductor Manufacturing: Precision stages and wafer handling equipment.
- Optical and Scanning Systems: Rotary encoders and precision positioning tables.
