SD120AR0
1/2" Stainless Steel Constant Section Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
SD120AR0
Basic Information
Bearing type
Ball
System of measurement
Inch
Thin section bearings type
Reali-Slim Stainless Steel
Construction
Single Row
Weight
2.23 lbs
Tolerance class
ABEC-1
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
12"
Bore diameter tolerance
-0.0014"– 0"
Outside diameter
13"
Outside diameter tolerance
-0.0014"– 0"
Width
0.5"
Width tolerance
+.000 –.005"
Contact angle
30 °
Inner Ring Dimensions
Shoulder diameter inner ring
12.37"
Outer Ring Dimensions
Outer ring large-side face inner diameter
12.728"
Outer ring small-side face inner diameter
12.63"
Performance
Temperature range
-30°C to 110 °C
Radial dynamic load rating
3288 lbf
Radial static load rating
9870 lbf
Axial static load rating
8420 lbf
Static load moment
28500 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:
$ 645.73
/ each
In Stock
- Fast delivery
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
SD120AR0 Bearing Product Overview & Core Advantages
The SD120AR0 is a high-precision thin section angular contact ball bearing engineered for applications demanding exceptional performance in a compact envelope. Manufactured from stainless steel for superior corrosion resistance, this bearing is designed to handle significant combined loads, including substantial thrust loads in one direction, thanks to its specific 30° contact angle. Its ABEC-1 precision rating ensures reliable operation in high-accuracy systems, making it an ideal solution for space-constrained, high-reliability applications requiring long service life.
SD120AR0 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| SD120 | Indicates the bearing series and size: "12" bore diameter, "13" outside diameter, "0.5" width. |
| A | Signifies the 30° contact angle, optimized for handling high axial loads. |
| R0 | Denotes Radial Internal Clearance group (0.0000 – 0.0005"). |
| (Implied) | Open construction, indicating no seals or shields, suitable for controlled environments or custom lubrication systems. |
SD120AR0 Bearing Structural Features & Performance Benefits
- Superior Load Capacity: The single row angular contact design, combined with a 30° contact angle and a brass cage, enables the bearing to support high radial dynamic load ratings (3288 lbf) and exceptionally high axial static load ratings (8420 lbf) and static load moments (28500 lbf).
- High Rigidity & Precision: The ABEC-1 tolerance class and tight dimensional tolerances on the bore and outside diameter ensure precise shaft positioning and smooth, vibration-free operation, contributing to overall system high rigidity.
- Corrosion Resistance & Longevity: Constructed entirely from stainless steel (rings and balls), this bearing is inherently resistant to rust and corrosion, ideal for harsh environments or applications requiring washdown.
- Optimized for Thin Sections: As part of the Reali-Slim series, it provides maximum load capacity within a minimal cross-section, saving critical space and weight (only 2.23 lbs) in compact machinery designs.
SD120AR0 Bearing Typical Application Areas
This bearing is ideally suited for precision machinery and systems where space, weight, and corrosion resistance are critical factors. Key applications include:
- Robotics: Joint and arm actuators requiring high moment load capacity.
- Aerospace & Defense: Guidance systems, gimbals, and control surface actuators.
- Medical Equipment: Surgical robots, MRI scanners, and diagnostic imaging devices.
- Semiconductor Manufacturing: Precision stages and wafer handling equipment.
- High-Precision Industrial Machinery: Rotary tables, indexing heads, and coordinate measuring machines (CMM).
