1205
1200 Series Self Aligning Ball Bearings
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Part No.
Part No.
1205
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
Cylindrical
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
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In Stock
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1205 Bearing Product Overview & Core Advantages
The 1205 double row deep groove ball bearing represents a precision bearing solution engineered for applications demanding high reliability and compact design. This metric bearing features an open construction and is pre-lubricated, enabling it to handle significant radial loads efficiently. Its double row design provides enhanced rigidity and load capacity within a minimal cross-section, making it an ideal choice for space-constrained, high-performance assemblies requiring smooth operation and long service life.
1205 Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning |
|---|---|
| 1205 | Standard bore diameter code (25 mm) and dimension series. |
| Open | No seals or shields, allowing for higher limiting speeds and easier re-lubrication access. |
| Cage: Nylon | Polyamide cage material contributing to quiet operation, low friction, and suitability for high-speed applications. |
| Internal Clearance: CN | Standard (Normal) radial internal clearance group, suitable for most common operating conditions. |
1205 Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row ball complement and robust chrome steel construction provide superior radial stiffness and a high dynamic load rating of 3218 lbf, enabling stable performance under demanding loads.
- Optimized for Speed: The lightweight nylon cage minimizes centrifugal forces and friction, supporting a high limiting speed of 18,000 rpm for efficient operation.
- Precision Dimensions: Manufactured with tight tolerances on the bore diameter (25 mm), outside diameter (52 mm), and width (15 mm), ensuring precise fit and reliable performance in precision assemblies.
- Broad Operating Range: The specified temperature range of -30°C to 110°C and pre-lubrication ensure consistent performance across various industrial environments.
1205 Bearing Typical Application Areas
This double row ball bearing is ideally suited for a wide range of applications, including:
- Electric Motors and Generators
- Gearboxes and Transmission Systems
- Industrial Fans and Blowers
- Material Handling Equipment
- Agricultural Machinery
- Appliance Motors
