1204-K
1200 Series Self Aligning Ball Bearings
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Part No.
Part No.
1204-K
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
Bore type
Taper 1:12
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
Radial internal clearance
CN
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:
$ 14.18
/ each
In Stock
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1204-K Bearing Product Overview & Core Advantages
The 1204-K is a metric double row angular contact ball bearing engineered for applications requiring high precision and robust performance. Featuring a 1:12 tapered bore for secure shaft mounting, this bearing is designed to accommodate significant radial loads while offering excellent operational stability. Its compact design, combined with a nylon cage and factory-applied lubrication, makes it an ideal solution for high-speed machinery demanding reliability and long service life.
1204-K Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 1204 | Standard bore diameter code (20 mm) |
| K | Designates a tapered bore with a 1:12 ratio, enabling precise interference fit on tapered shafts for enhanced rigidity. |
1204-K Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row ball construction provides superior radial stiffness and enables the bearing to handle substantial radial dynamic loads (rated at 2858 lbf).
- Precision Tapered Bore: The 1:12 tapered bore ensures a tight, secure fit on matching shafts, minimizing inner ring creep and maintaining positional accuracy under heavy loads.
- Optimized High-Speed Performance: The lightweight nylon cage reduces centrifugal forces, contributing to a high limiting speed of 20,000 rpm. Combined with pre-applied lubrication, it ensures smooth operation at elevated rotational speeds.
- Standardized Internal Clearance: The CN radial internal clearance is the standard group, providing an optimal balance for most general applications, ensuring consistent performance across a wide temperature range (-30°C to 110°C).
1204-K Bearing Typical Application Areas
This bearing is widely used in:
- Electric Motors and Precision Gearboxes requiring secure shaft fixation and high-speed capability.
- Agricultural Machinery and Material Handling Equipment where high radial load capacity and reliability are critical.
- Industrial Fans and Pumps that operate at high rotational speeds.
- Various machinery utilizing tapered shaft adapters for simplified mounting and dismounting procedures.
