1205J
1200 Series Self Aligning Ball Bearings
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Part No.
Part No.
1205J
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
Steel
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
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In Stock
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1205J Bearing Product Overview & Core Advantages
The 1205J double row angular contact ball bearing is a precision bearing engineered for applications requiring high rigidity and reliable performance under combined loads. Its compact double row design enables it to simultaneously support significant radial loads and bidirectional axial loads, making it an ideal solution for space-constrained, high-precision machinery. Manufactured from high-grade chrome steel, this bearing offers excellent durability and is pre-lubricated for immediate use, ensuring high operational reliability.
1205J Bearing Model Code Explained, Specifications & Naming Convention
The model designation 1205J can be broken down as follows:
- 12: Series code, indicating a specific cross-section and performance profile.
- 05: Bore diameter code. The bore diameter is calculated as 05 x 5 = 25 mm.
- J: Denotes a specific internal design and CN group radial internal clearance, which is the standard group for general applications.
1205J Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row ball bearing construction provides superior rigidity and stability compared to single row designs, effectively handling combined radial and axial loads from both directions.
- Optimized for Performance: The pressed steel cage ensures smooth operation at high speeds, contributing to the bearing's limiting speed of 18,000 rpm. The standard CN radial internal clearance offers a versatile balance for a wide range of operating conditions.
- Precision Engineering: Manufactured with tight dimensional tolerances (e.g., bore diameter: -0.01mm to 0), this bearing is suited for applications demanding high running accuracy.
- Material & Lubrication: Constructed from chrome steel for both rings and balls, it provides high load ratings and long service life. The bearing is pre-lubricated for immediate installation and operation.
1205J Bearing Typical Application Areas
This double row angular contact ball bearing is commonly specified in:
- Electric Motors and Generators
- Gearboxes and Transmission Systems
- Industrial Pumps and Compressors
- Precision Agricultural Machinery
- Material Handling Equipment
