70/630 AMB
Single Row Angular Contact Ball Bearings
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Part No.
Part No.
70/630 AMB
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
270 kg
Tolerance class
P6 (ABEC-3)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
630 mm
Bore diameter tolerance
-0.04mm to 0
Outside diameter
920 mm
Outside diameter tolerance
-0.06mm to 0
Width
128 mm
Width tolerance
-0.05mm to 0
Chamfer dimension
7.5 mm
Contact angle
40 °
Distance from side face to load point
240 mm
Inner Ring Dimensions
Inner ring large-side shoulder diameter
724 mm
Outer Ring Dimensions
Shoulder diameter outer ring
817 mm
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
215100 lbf
Radial static load rating
551250 lbf
Limiting speed
0.7 X 1000 rpm
Lubrication
Lubricated
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Brass
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
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In Stock
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70/630 AMB Bearing Product Overview & Core Advantages
The 70/630 AMB is a single row angular contact ball bearing engineered for high-precision applications requiring exceptional rigidity and load capacity. Designed to accommodate combined loads, it efficiently supports significant radial loads alongside substantial axial loads in one direction. Manufactured to a P6 (ABEC-3) tolerance class, this bearing ensures high running accuracy and reliability. Its robust construction and 40° contact angle make it an ideal choice for demanding machinery where precision and high load-carrying capability are paramount.
70/630 AMB Bearing Model Code Explained, Specifications & Naming Convention
| 70/630 | Basic designation indicating a metric series bearing with a 630 mm bore diameter. |
| AMB | Manufacturer-specific suffix. Please consult the manufacturer's technical documentation for the precise designation of materials and internal design features. |
| (P6) | Denotes the tolerance class, equivalent to ABEC-3, ensuring high precision and dimensional stability. |
| (Open) | Specifies an open (non-shielded/non-sealed) design, suitable for systems with external lubrication. |
70/630 AMB Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The single row design with a 40° contact angle is optimized to handle high combined loads. The substantial bearing dimensions (630 mm bore, 920 mm OD) contribute to a high radial static load rating of 551,250 lbf and a radial dynamic load rating of 215,100 lbf.
- Precision Performance: Manufactured to a P6 tolerance class, this bearing guarantees high running accuracy and minimal vibration, which is critical for precision spindles and other high-accuracy machinery.
- Optimized Internal Geometry: The brass cage ensures stable operation, while the optimized shoulder diameters on both rings (Inner: 724 mm, Outer: 817 mm) provide secure seating and alignment.
- Material Integrity: Constructed from chrome steel for both rings and balls, the bearing offers high hardness, wear resistance, and a long operational lifespan under demanding conditions.
70/630 AMB Bearing Typical Application Areas
This high-precision, high-capacity angular contact ball bearing is ideally suited for heavy-duty and precision applications, including:
- Large Machine Tool Spindles
- Industrial Gearboxes
- Heavy-Duty Pumps and Compressors
- Mining and Construction Equipment
- Large Precision Turntables
