KC120AR0
3/8" Constant Section Bearings
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Basic Information
Main Dimensions
Inner Ring Dimensions
Outer Ring Dimensions
Performance
Materials
Environment & Compliance
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KC120AR0 Bearing Product Overview & Core Advantages
The KC120AR0 is a high-precision, inch-series thin section angular contact ball bearing engineered for applications demanding exceptional rigidity and accurate rotational performance within compact design envelopes. Its single row design with a 30° contact angle is optimized to support significant combined loads, handling both radial and axial forces simultaneously. Manufactured to ABEC-1 precision tolerances, this bearing ensures reliable operation in high-performance systems where space and weight are critical constraints.
KC120AR0 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| KC120 | Indicates the Reali-Slim® thin section bearing series with a 12" bore diameter and specific cross-section. |
| A | Signifies the 30° contact angle, optimized for high axial load capacity and rigidity. |
| R0 | Specifies the standard radial internal clearance (0.0000 – 0.0005"). |
| Open | Denotes an unsealed (open) construction, allowing for custom lubrication schemes and high-speed capability. |
KC120AR0 Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The angular contact design and single row construction with a 30° contact angle provide high axial and radial stiffness, enabling the bearing to withstand substantial combined loads (Radial Dynamic: 2147 lbf, Axial Static: 5570 lbf).
Precision & Speed: Manufactured to ABEC-1 tolerance standards and featuring a brass cage, the bearing ensures smooth operation and is suitable for high rotational speeds. The open design facilitates optimal lubrication flow, further enhancing its high-speed potential.
Space & Weight Saving: As part of the Reali-Slim series, it features a thin cross-section (Width: 0.375") with a large bore (12"), offering a high load capacity within a minimal envelope and reducing overall system weight (1.23 lbs).
Material & Durability: Constructed from chrome steel for both rings and balls, the bearing provides excellent wear resistance and long service life under demanding conditions.
KC120AR0 Bearing Typical Application Areas
- Robotics: Robotic arms and joints requiring high precision and rigidity.
- Aerospace & Defense: Gimbals, radar systems, and control surfaces where weight savings are critical.
- Medical Equipment: CT scanners, MRI machines, and surgical robots.
- Semiconductor Manufacturing: Precision stages and wafer handling equipment.
- Optical & Instrumentation: Rotary tables and positioning systems.
