70/1120 AMB
Single Row Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Inner Ring Dimensions
Outer Ring Dimensions
Performance
Materials
Environment & Compliance
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70/1120 AMB Bearing Product Overview & Core Advantages
The 70/1120 AMB is a single row angular contact ball bearing engineered for demanding applications requiring exceptional precision and load capacity. This precision bearing is designed to accommodate high combined loads, primarily thrust loads in one direction, making it ideal for high-rigidity systems. Manufactured to a P6 (ABEC-3) tolerance class, it ensures reliable performance in high-precision machinery. Its large bearing dimensions (1120 mm bore) and robust construction provide superior stability and long service life in heavy-duty industrial environments.
70/1120 AMB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 70/1120 | Bearing series and bore diameter (1120 mm) |
| AMB | Manufacturer's internal designation for specific design features and material selection |
| Open (Seal Type) | No integral seals, designed for external sealing systems and controlled lubrication |
| P6 (Tolerance) | High precision tolerance class (equivalent to ABEC-3) |
70/1120 AMB Bearing Structural Features & Performance Benefits
This bearing's performance is defined by its specific construction:
- High Rigidity & Load Capacity: The 40° contact angle and optimized raceway geometry are engineered to support high unidirectional thrust loads and moderate radial loads simultaneously. With a radial dynamic load rating of 400,500 lbf and a static load rating of 1,440,000 lbf, it delivers exceptional strength for its size.
- Precision Engineering: The P6 tolerance class ensures minimal runout and precise rotational accuracy, which is critical for applications like large machine tool spindles.
- Optimized Material Selection: The combination of chrome steel rings and balls with a brass cage provides excellent durability, wear resistance, and reliable operation under high-stress conditions.
- Stable Operating Envelope: The specified temperature range of -30° to 110 °C and pre-lubrication ensure consistent performance across various operating conditions.
70/1120 AMB Bearing Typical Application Areas
The 70/1120 AMB is suited for large-scale, heavy-duty machinery where high precision and load capacity are paramount. Key industries and equipment include:
- Large Machine Tool Spindles and rotary tables
- Industrial Gearboxes and power transmission systems
- Heavy-Duty Pumps and compressors
- Mining and Construction Equipment main bearings
- Wind Turbine pitch and yaw control systems
