SD040AR0
1/2" Stainless Steel Constant Section Bearings
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Part No.
Part No.
SD040AR0
Basic Information
Bearing type
Ball
System of measurement
Inch
Thin section bearings type
Reali-Slim Stainless Steel
Construction
Single Row
Weight
0.8 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"
Outside diameter tolerance
-0.0006" – 0"
Width
0.5"
Width tolerance
+.000 –.005"
Contact angle
30 °
Inner Ring Dimensions
Shoulder diameter inner ring
4.37"
Outer Ring Dimensions
Outer ring large-side face inner diameter
4.741"
Outer ring small-side face inner diameter
4.63"
Performance
Temperature range
-30°C to 110 °C
Radial dynamic load rating
1819 lbf
Radial static load rating
3550 lbf
Axial static load rating
4260 lbf
Static load moment
10260 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:
$ 188.42
/ each
In Stock
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SD040AR0 Bearing Product Overview & Core Advantages
The SD040AR0 is a high-performance thin section angular contact ball bearing engineered for applications demanding precision and reliability. As part of the Reali-Slim Stainless Steel Bearings series, it features a compact, single-row design optimized to handle significant combined loads, including substantial thrust loads in one direction due to its 30° contact angle. Manufactured entirely from corrosion-resistant stainless steel with a brass cage, it offers excellent performance in a wide temperature range from -30°C to 110°C, making it an ideal solution for space-constrained, high-rigidity applications.
SD040AR0 Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning |
|---|---|
| SD | Indicates the bearing is part of the Reali-Slim series with a 4" bore diameter. |
| 040 | Specifies the cross-section: 0.5" width and 1" difference between outside diameter and bore. |
| A | Denotes the 30° contact angle, optimized for handling high axial loads. |
| R0 | Signifies an open (unsealed) design and standard ABEC-1 precision tolerance. |
SD040AR0 Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The single row angular contact design, combined with a 30° contact angle, provides high rigidity and is engineered to support significant combined radial and axial loads. It features a high axial static load rating of 4260 lbf.
- Precision & Speed: Manufactured to ABEC-1 tolerance standards with a controlled radial internal clearance, this bearing ensures smooth operation and is suitable for applications requiring precise rotational accuracy.
- Corrosion Resistance & Durability: Constructed entirely from stainless steel (rings and balls) with a robust brass cage, this bearing offers superior corrosion resistance and long-term durability in challenging environments.
- Space-Saving Design: As a thin section bearing, it provides a large bore diameter relative to its cross-section, enabling compact and lightweight machine designs without sacrificing performance.
SD040AR0 Bearing Typical Application Areas
This bearing is ideally suited for a wide range of precision equipment, including:
- Robotics and Automation: Robot arm joints, rotary actuators, and precision gearing systems.
- Aerospace & Defense: Guidance systems, radar platforms, and satellite mechanisms.
- Medical Equipment: Surgical robots, MRI scanners, and diagnostic imaging devices.
- Semiconductor Manufacturing: Wafer handling robots and precision stages.
