KD120AR0
1/2" 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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KD120AR0 Bearing Product Overview & Core Advantages
The KD120AR0 is a high-precision thin section angular contact ball bearing designed for applications demanding exceptional rigidity and space efficiency. Engineered as a single row bearing with a 30° contact angle, it is optimized to handle significant combined loads, including high radial loads and substantial thrust loads in one direction. Its inch-series dimensions (12" bore, 13" OD, 0.5" width) offer a compact cross-section, making it ideal for high-reliability, weight-sensitive systems. The bearing is pre-lubricated for immediate operation and adheres to ABEC-1 precision tolerances, ensuring consistent performance in demanding industrial environments.
KD120AR0 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| KD120 | Bearing series designation for a 12" bore, thin-section angular contact bearing. |
| A | Signifies a 30° contact angle, optimized for high thrust capacity. |
| R | Indicates the bearing is pre-lubricated (Lubricated). |
| 0 | Denotes an open (unsealed) construction. |
KD120AR0 Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The single row design with a generous 30° contact angle provides high axial and radial stiffness, enabling it to support substantial combined loads (Radial Dynamic: 3288 lbf, Axial Static: 8420 lbf).
- Precision Engineering: Manufactured to ABEC-1 tolerance standards with a controlled radial internal clearance (0.0000 – 0.0005"), ensuring smooth, precise operation and minimal runout.
- Durable Construction: Components made from Chrome Steel (rings and balls) and a Brass cage offer excellent wear resistance and durability under high-stress conditions.
- Ready-to-Install: The bearing is factory lubricated, simplifying installation and providing immediate protection upon startup.
KD120AR0 Bearing Typical Application Areas
- Robotics and Automation (Robotic arms, rotary joints)
- Aerospace and Defense (Radar platforms, gimbal systems)
- Medical Equipment (CT scanners, large rotary tables)
- Semiconductor Manufacturing (Wafer handling robots, precision stages)
- Industrial Machinery (Large indexing tables, precision spindles)
