KC055AR0
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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KC055AR0 Bearing Product Overview & Core Advantages
The KC055AR0 is a high-precision thin section angular contact ball bearing designed for applications demanding exceptional rigidity and space efficiency. Engineered with a 30° contact angle, this single-row bearing excels at supporting combined loads, handling significant radial and axial forces simultaneously. Its inch-series dimensions (5.5" bore, 6.25" OD, 0.375" width) and ABEC-1 precision make it ideal for high-reliability, compact assemblies where weight and cross-section are critical constraints. The bearing comes pre-lubricated for immediate operation.
KC055AR0 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| KC | Indicates the Reali-Slim® series of thin section bearings. |
| 055 | Specifies the bore diameter of 5.5 inches. |
| A | Denotes the 30° contact angle, optimized for combined load capacity. |
| R | Signifies a brass (ribbon-type) cage for stability and strength. |
| 0 | Indicates an open (unsealed) construction. |
KC055AR0 Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The single-row angular contact design with a 30° contact angle provides superior resistance to combined radial and axial loads (Radial Dynamic: 1374 lbf, Axial Static: 3370 lbf), ensuring stable performance under complex stress conditions.
- Precision Engineering: Manufactured to ABEC-1 tolerance class with tight dimensional control (bore/OD tolerance: -0.0010" to 0") for smooth, precise operation in high-accuracy systems.
- Optimized Cage Design: The brass cage offers excellent strength and guidance, contributing to reliable performance at moderate speeds and reducing friction.
- Material Quality: Components made from chrome steel provide high hardness, wear resistance, and long service life.
- Space-Saving Design: As a thin section bearing with a minimal cross-section (0.375" width), it enables compact and lightweight machinery designs without sacrificing performance.
KC055AR0 Bearing Typical Application Areas
The KC055AR0 is ideally suited for precision applications where space, weight, and accurate motion control are paramount. Key industries and equipment include:
- Robotics & Automation: Robotic arms, rotary joints, and precision actuators.
- Aerospace & Defense: Gimbal systems, radar platforms, and guidance mechanisms.
- Medical Equipment: CT scanners, MRI machines, and surgical robot joints.
- Semiconductor Manufacturing: Wafer handling robots and precision stages.
- Optical & Instrumentation: Rotary tables, telescope mounts, and measuring devices.
