1204 ETN9
1200 Series Self Aligning Ball Bearings
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Part No.
Part No.
1204 ETN9
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Double Row
Weight
0.12 kg
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
20 mm
Bore diameter tolerance
-0.01mm to 0
Outside diameter
47 mm
Outside diameter tolerance
-0.011mm to 0
Width
14 mm
Width tolerance
-0.12mm to 0
Chamfer dimension
1 mm
Inner Ring Dimensions
Shoulder diameter inner ring
28.88 mm
Outer Ring Dimensions
Shoulder diameter outer ring
40 mm
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
2858 lbf
Radial static load rating
765 lbf
Limiting speed
20 X 1000 rpm
Lubrication
Lubricated
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Nylon
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 11.52
/ each
In Stock
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1204 ETN9 Bearing Product Overview & Core Advantages
The 1204 ETN9 is a metric double row angular contact ball bearing engineered for high-performance applications requiring superior rigidity and the capacity to handle combined loads. Its double row design provides enhanced stability and load-carrying ability compared to single row bearings, making it an ideal choice for compact arrangements where space is at a premium. This bearing is pre-lubricated for immediate use and features a nylon cage (TN9) that contributes to its high limiting speed and quiet operation, ensuring reliability in demanding operational environments.
1204 ETN9 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 1204 | Standard bearing designation indicating a metric double row angular contact ball bearing with a 20 mm bore diameter. |
| E | Optimized internal design for enhanced load capacity and performance. |
| TN9 | Polyamide (Nylon) cage, glass fiber reinforced. This design is lightweight, reduces friction, and is ideal for high-speed applications. |
1204 ETN9 Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row construction provides significantly greater radial and axial stiffness than single row bearings, enabling it to withstand substantial combined loads (simultaneous radial and axial forces).
- Optimized High-Speed Performance: The lightweight TN9 nylon cage minimizes centrifugal forces and ensures stable operation at the high limiting speed of 20,000 rpm, reducing vibration and noise.
- Precision & Reliability: Manufactured from chrome steel for both rings and balls, the bearing offers high durability and wear resistance. The tight dimensional tolerances ensure precise fit and consistent performance.
- Ready-to-Use Lubrication: The bearing comes pre-lubricated, facilitating easy installation and providing immediate protection against wear during the initial run-in period.
1204 ETN9 Bearing Typical Application Areas
This double row angular contact ball bearing is widely used in applications demanding high precision, rigidity, and speed. Key industries and equipment include:
- Electric Motors and small spindles
- Precision Gearboxes and transmission systems
- Pumps and Compressors
- Office automation equipment and precision instruments
