SB055AR0
5/16" Stainless Steel Constant Section Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
SB055AR0
Basic Information
Bearing type
Ball
System of measurement
Inch
Thin section bearings type
Reali-Slim Stainless Steel
Construction
Single Row
Weight
0.4 lbs
Tolerance class
ABEC-1
ISO radial rating
2158 lbf
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
5.5"
Bore diameter tolerance
-0.0010"– 0"
Outside diameter
6.125"
Outside diameter tolerance
-0.0010"– 0"
Width
0.3125"
Width tolerance
+.000 –.005"
Contact angle
30 °
Inner Ring Dimensions
Shoulder diameter inner ring
5.731"
Outer Ring Dimensions
Outer ring large-side face inner diameter
5.958"
Outer ring small-side face inner diameter
5.893"
Performance
Temperature range
-30°C to 110 °C
Radial dynamic load rating
1033 lbf
Radial static load rating
2740 lbf
Axial static load rating
2560 lbf
Static load moment
7920 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:
$ 280.56
/ each
In Stock
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SB055AR0 Bearing Product Overview & Core Advantages
The SB055AR0 is a high-performance thin section angular contact ball bearing engineered for precision applications requiring exceptional dimensional stability and corrosion resistance. Manufactured from stainless steel throughout its rings and balls, this bearing is designed to handle significant combined loads (radial and axial) simultaneously. Its 30° contact angle is optimized for high axial load capacity and rigidity, making it ideal for compact, weight-sensitive assemblies where precision and reliability are paramount. The ABEC-1 precision class ensures consistent performance in demanding operational environments.
SB055AR0 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| SB | Indicates the Reali-Slim thin section bearing series. |
| 055 | Specifies the nominal bore diameter of 5.5 inches. |
| A | Denotes the 30° contact angle, optimized for high axial load capacity. |
| R | Signifies the use of a brass cage (retainer) for enhanced strength and speed capability. |
| 0 | Indicates an open (unsealed) construction. |
SB055AR0 Bearing Structural Features & Performance Benefits
- Thin-Section Design: The compact cross-section (0.3125" width) with large bore diameters minimizes weight and space requirements without sacrificing performance, a hallmark of the Reali-Slim series.
- High Load Capacity: The 30° contact angle and single row construction are engineered to support substantial combined radial and axial loads, with a static axial load rating of 2560 lbf.
- Corrosion Resistance & Cleanliness: Constructed entirely from stainless steel (rings and balls), this bearing is inherently resistant to corrosion and is suitable for applications requiring clean operation.
- Precision & Stability: The ABEC-1 tolerance class and tight dimensional tolerances ensure smooth, precise rotation and reliable performance in precision mechanisms.
- Robust Cage: The brass cage provides excellent durability and guidance for the balls, contributing to stable operation under high-speed conditions.
SB055AR0 Bearing Typical Application Areas
- Robotics & Automation: Precision joints, rotary actuators, and robotic arms where compact size, low weight, and high rigidity are critical.
- Aerospace & Defense: Guidance systems, gimbal mechanisms, and control surfaces benefiting from corrosion-resistant materials and precision tolerances.
- Medical Equipment: Imaging scanners (CT, MRI), surgical robots, and diagnostic instruments requiring high cleanliness and reliability.
- Semiconductor Manufacturing: Wafer handling robots and precision stages where minimal particle generation and high accuracy are essential.
- Optical & Instrumentation Systems: Rotary tables, mirror mounts, and positioning devices demanding high precision and stiffness.
