1205K
1200 Series Self Aligning Ball Bearings
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Part No.
Part No.
1205K
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Double Row
Weight
0.14 kg
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
25 mm
Bore diameter tolerance
-0.01mm to 0
Bore type
Taper 1:12
Outside diameter
52 mm
Outside diameter tolerance
-0.013mm to 0
Width
15 mm
Width tolerance
-0.12mm to 0
Chamfer dimension
1 mm
Inner Ring Dimensions
Shoulder diameter inner ring
33.3 mm
Outer Ring Dimensions
Shoulder diameter outer ring
44.6 mm
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
3218 lbf
Radial static load rating
900 lbf
Limiting speed
18 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
In Stock
Price available upon request.
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1205K Bearing Product Overview & Core Advantages
The 1205K is a metric double row angular contact ball bearing designed for applications requiring high rigidity and precise operation. Featuring a tapered bore (1:12), this bearing excels at handling combined loads—simultaneously supporting significant radial forces while accommodating axial loads in both directions. Its compact design, with a 15mm width, makes it ideal for space-constrained, high-precision assemblies. Manufactured from chrome steel and utilizing a nylon cage, it offers excellent durability and smooth operation at high speeds.
1205K Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning |
|---|---|
| K | Denotes a tapered bore with a 1:12 ratio. This design allows for precise axial positioning and secure mounting on adapter sleeves or withdrawal sleeves, enhancing operational stability. |
| (No Seal Suffix) | The bearing is of open construction. This allows for custom lubrication schemes and is suitable for applications where the bearing is integrated into a pre-lubricated housing. |
1205K Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row ball construction provides superior rigidity compared to single row bearings, making it exceptionally capable of withstanding combined radial and axial loads. This is critical for applications with complex force distributions.
- Tapered Bore Advantage: The K-suffix tapered bore ensures a tight, interference fit when mounted correctly. This eliminates internal clearance, minimizes vibration, and significantly increases the system's overall stiffness and rotational accuracy.
- Optimized for High Speeds: The lightweight nylon cage minimizes centrifugal forces, reduces friction, and contributes to a high limiting speed of 18,000 rpm. This makes the 1205K a true high-speed bearing.
- Precision & Material Quality: Manufactured from high-grade chrome steel with tight dimensional tolerances (e.g., bore diameter: -0.01mm to 0), this bearing ensures consistent performance, long service life, and reliable operation in precision machinery.
1205K Bearing Typical Application Areas
The 1205K bearing is engineered for demanding industrial environments. Its key characteristics make it suitable for:
- Electric Motors & Generators: Particularly in mid-sized units requiring high-speed operation and robust support for rotor loads.
- Industrial Gearboxes: Where its ability to handle combined loads and high rigidity is essential for power transmission accuracy.
- Material Handling Equipment: Such as conveyor pulleys and rollers, benefiting from its durable construction and high load capacity.
- Agricultural Machinery: In PTO shafts, fan drives, and other components subject to heavy loads and vibrations.
