1208J
1200 Series Self Aligning Ball Bearings
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Part No.
Part No.
1208J
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Double Row
Weight
0.42 kg
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
40 mm
Bore diameter tolerance
-0.012mm to 0
Bore type
Cylindrical
Outside diameter
80 mm
Outside diameter tolerance
-0.013mm to 0
Width
18 mm
Width tolerance
-0.12mm to 0
Chamfer dimension
1.1 mm
Inner Ring Dimensions
Shoulder diameter inner ring
53.85 mm
Outer Ring Dimensions
Shoulder diameter outer ring
67.5 mm
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
4478 lbf
Radial static load rating
1564 lbf
Limiting speed
11 X 1000 rpm
Lubrication
Lubricated
Radial internal clearance
CN
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Steel
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
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In Stock
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1208J Bearing Product Overview & Core Advantages
The 1208J is a double row deep groove ball bearing designed for applications requiring robust performance and high reliability. This metric bearing features an open design, enabling it to accommodate significant radial loads. Its double row construction provides enhanced rigidity and load-carrying capacity compared to single row bearings, making it a compact and efficient solution for a wide range of industrial machinery. Manufactured from high-grade chrome steel, it ensures durability and consistent operation.
1208J Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 1208 | Standard bore diameter code indicating a 40mm bore. |
| J | Denotes a stamped steel cage, which is a robust and cost-effective design suitable for high-speed applications. |
1208J Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row ball complement significantly increases the bearing's radial dynamic load rating (4478 lbf) and radial static load rating (1564 lbf), providing stable support under heavy loads.
- Optimized Internal Geometry: Precise shoulder diameters on the inner (53.85 mm) and outer (67.5 mm) rings ensure proper ball guidance and load distribution.
- High-Speed Capability: The combination of the steel cage (J) and CN radial internal clearance allows for a high limiting speed of 11,000 rpm.
- Precision Tolerances: Tight dimensional tolerances on the bore, outside diameter, and width ensure precise fit and reliable performance in precision assemblies.
- Material Integrity: Components made from chrome steel offer high hardness, wear resistance, and a long operational life.
1208J Bearing Typical Application Areas
This bearing is ideally suited for applications demanding high radial load capacity and rigidity, including:
- Electric Motors and Generators
- Gearboxes and Transmission Systems
- Industrial Pumps and Compressors
- Material Handling Equipment
- Agricultural Machinery
