K12008AR0
8mm 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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K12008AR0 Bearing Product Overview & Core Advantages
The K12008AR0 is a single row angular contact ball bearing from the Reali-Slim mm Metric Bearings series, specifically engineered for applications requiring thin-section design and high precision. Its primary advantage lies in its ability to support combined loads, effectively handling both radial and axial forces simultaneously due to its specified 30° contact angle. This bearing is designed for compact spaces where a high strength-to-cross-section ratio is critical, offering reliable performance in precision applications with an ABEC-1 tolerance class.
K12008AR0 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| K | Indicates the bearing is part of the Reali-Slim metric thin-section series. |
| 12008 | Specifies the nominal bore diameter (120 mm) and cross-section. |
| A | Denotes a 30° contact angle, optimized for supporting significant axial loads. |
| R0 | Specifies a standard radial internal clearance (0.0000 – 0.0005"). |
K12008AR0 Bearing Structural Features & Performance Benefits
Thin-Section Design: With an 8mm width and a 120mm bore, this bearing provides a large diameter in a minimal cross-section, saving space and weight (0.16 kg) in compact assemblies.
High Load Capacity: The 30° contact angle and chrome steel construction (rings and balls) enable high radial dynamic load rating (1294 lbf) and axial static load rating (3086 lbf), making it suitable for combined load conditions.
Precision & Rigidity: Manufactured to ABEC-1 precision tolerances with strict dimensional controls on bore, outside diameter, and width, ensuring consistent performance and high rigidity in the application.
Durability & Stability: The brass cage provides strength and stability at operational speeds. The specified radial internal clearance and broad temperature range (-30°C to 110 °C) ensure reliable operation under various conditions.
K12008AR0 Bearing Typical Application Areas
- Robotics: Rotary joints and arm linkages requiring compact, high-capacity bearings.
- Aerospace & Defense: Actuators, control surface mechanisms, and radar systems where space and weight are critical.
- Medical Equipment: Precision imaging devices (CT/MRI scanners) and surgical robot arms.
- Semiconductor Manufacturing: Wafer handling robots and precision stages.
- Optical Instrumentation: Rotary stages in measuring and alignment equipment.
