SA055AR0
1/4" Stainless Steel Constant Section Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
SA055AR0
Basic Information
Bearing type
Ball
System of measurement
Inch
Thin section bearings type
Reali-Slim Stainless Steel
Construction
Single Row
Weight
0.25 lbs
Tolerance class
ABEC-1
ISO radial rating
1513 lbf
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
5.5"
Bore diameter tolerance
-0.0010"– 0"
Outside diameter
6"
Outside diameter tolerance
-0.0010"– 0"
Width
0.25"
Width tolerance
+.000 –.005"
Contact angle
30 °
Inner Ring Dimensions
Shoulder diameter inner ring
5.686"
Outer Ring Dimensions
Outer ring large-side face inner diameter
5.863"
Outer ring small-side face inner diameter
5.814"
Performance
Temperature range
-30°C to 110 °C
Radial dynamic load rating
715 lbf
Radial static load rating
2020 lbf
Axial static load rating
1800 lbf
Static load moment
5820 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:
$ 258.79
/ each
In Stock
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SA055AR0 Bearing Product Overview & Core Advantages
The SA055AR0 is a thin section angular contact ball bearing engineered for precision applications requiring minimal cross-section and high performance. Manufactured from stainless steel with a single row design, this bearing is optimized to handle significant combined loads, including substantial thrust and radial forces, thanks to its 30° contact angle. Its compact design, featuring a large 5.5" bore within a slim 0.25" width, makes it ideal for space-constrained, high-reliability machinery. The bearing comes pre-lubricated and is built to ABEC-1 precision tolerances, ensuring smooth operation and long service life.
SA055AR0 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| SA | Indicates the Reali-Slim series of thin section bearings. |
| 055 | Specifies the nominal bore diameter in inches (5.5"). |
| A | Denotes the 30° contact angle, optimized for handling high axial loads. |
| R0 | Specifies the radial internal clearance group. |
SA055AR0 Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The single row angular contact design with a 30° contact angle provides exceptional rigidity and is capable of supporting high combined radial and axial loads (Radial Dynamic: 715 lbf, Axial Static: 1800 lbf).
- Precision Engineering: Manufactured to ABEC-1 tolerance standards with tight bore and OD tolerances, ensuring precise running accuracy and system reliability.
- Corrosion Resistance & Durability: Constructed entirely from stainless steel rings and balls with a brass cage, offering excellent corrosion resistance and suitability for harsh environments within a temperature range of -30°C to 110°C.
- Space-Saving Design: As part of the Reali-Slim series, it provides a large bore diameter relative to its ultra-thin cross-section, maximizing design space in compact assemblies.
SA055AR0 Bearing Typical Application Areas
This bearing is ideally suited for applications where a slim profile, high precision, and robust load capacity are critical. Key industries and equipment include:
- Robotics: Rotary joints and actuator arms.
- Aerospace & Defense: Guidance systems, gimbals, and radar platforms.
- Medical Equipment: CT scanners, surgical robots, and precision imaging devices.
- Semiconductor Manufacturing: Wafer handling robots and precision stages.
