70/670 AMB
Single Row Angular Contact Ball Bearings
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Part No.
Part No.
70/670 AMB
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
353 kg
Tolerance class
P6 (ABEC-3)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
670 mm
Bore diameter tolerance
-0.05mm to 0
Outside diameter
980 mm
Outside diameter tolerance
-0.06mm to 0
Width
136 mm
Width tolerance
-0.05mm to 0
Chamfer dimension
7.5 mm
Distance from side face to load point
306 mm
Inner Ring Dimensions
Inner ring large-side shoulder diameter
772.6 mm
Outer Ring Dimensions
Shoulder diameter outer ring
868.2 mm
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
263250 lbf
Radial static load rating
697500 lbf
Limiting speed
0.6 X 1000 rpm
Lubrication
Lubricated
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
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In Stock
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70/670 AMB Bearing Product Overview & Core Advantages
The 70/670 AMB is a single row angular contact ball bearing engineered for applications requiring exceptional precision and reliability. This precision bearing is designed to accommodate high combined loads, primarily thrust loads in one direction, while also supporting significant radial loads. Manufactured to a P6 (ABEC-3) tolerance class, it ensures high running accuracy. Its robust construction and optimized internal geometry contribute to high rigidity and stable performance in demanding industrial environments.
70/670 AMB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 70/670 | Bearing series and bore diameter (670 mm). |
| AMB | Manufacturer's internal designation for this specific angular contact design and performance grade. |
| Open (Seal Type) | The bearing is supplied without seals or shields, allowing for custom lubrication systems and facilitating high-speed operation. |
| P6 (Tolerance Class) | Denotes a high precision grade (equivalent to ABEC-3), ensuring tight dimensional and running accuracy. |
70/670 AMB Bearing Structural Features & Performance Benefits
- High Load Capacity & Rigidity: The single row angular contact design, with a contact angle optimized for thrust loads, provides high axial rigidity and the ability to handle significant combined loads. The large bearing dimensions (670 mm bore) and robust construction contribute to its high radial dynamic load rating of 263,250 lbf and static load rating of 697,500 lbf.
- Precision Performance: Manufactured to a P6 tolerance class, this bearing guarantees minimal runout and vibration, which is critical for applications demanding high rotational accuracy.
- Optimized for Custom Lubrication: The open design allows for integration into centralized lubrication systems, enabling optimal performance in specific operating conditions and potentially extending service life.
- Material Integrity: Constructed from high-grade chrome steel for both rings and balls, ensuring high durability, wear resistance, and a long operational lifespan under heavy loads.
70/670 AMB Bearing Typical Application Areas
This bearing is suited for heavy-duty, precision machinery where high axial and radial load capacity is paramount. Key applications include:
- Large Industrial Gearboxes
- Heavy-Duty Pumps and Compressors
- Machine Tool Spindles (for larger machining centers)
- Mining and Construction Equipment
- Large Turntables and Slewing Rings
