1209 K
1200 Series Self Aligning Ball Bearings
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Part No.
Part No.
1209 K
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Double Row
Weight
0.47 kg
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
45 mm
Bore diameter tolerance
-0.012mm to 0
Bore type
Taper 1:12
Outside diameter
85 mm
Outside diameter tolerance
-0.015mm to 0
Width
19 mm
Width tolerance
-0.12mm to 0
Chamfer dimension
1.1 mm
Inner Ring Dimensions
Shoulder diameter inner ring
57.51 mm
Outer Ring Dimensions
Shoulder diameter outer ring
72.5 mm
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
5152 lbf
Radial static load rating
1755 lbf
Limiting speed
11 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:
$ 36.16
/ each
In Stock
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1209 K Bearing Product Overview & Core Advantages
The 1209 K is a metric double row angular contact ball bearing engineered for applications requiring high rigidity and precise operation. Featuring a 1:12 tapered bore, this bearing is specifically designed for secure shaft mounting and excellent rotational accuracy. Its double row ball construction enables it to accommodate significant combined loads (radial and axial) simultaneously, making it a robust and reliable choice for demanding industrial environments. The open design, combined with a nylon cage, facilitates high-speed operation while maintaining dimensional stability.
1209 K Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 1209 | Standard bearing designation indicating a metric double row angular contact ball bearing with a 45 mm bore and 85 mm outside diameter. |
| K | Denotes a tapered bore with a 1:12 conicity. This allows for precise axial adjustment and a tight interference fit on the shaft, enhancing system rigidity. |
1209 K Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row angular contact design provides superior rigidity compared to single row bearings. This structure is optimized to handle substantial radial dynamic loads (5152 lbf) and static loads (1755 lbf), making it ideal for applications with significant combined loads.
- Precision Tapered Bore: The 1:12 tapered bore ensures a secure and concentric fit on a matching adapter sleeve or withdrawal sleeve. This feature is critical for applications requiring high running accuracy and minimal vibration.
- High-Speed Capability: The lightweight nylon cage minimizes centrifugal forces, reduces friction, and contributes to a high limiting speed of 11,000 rpm. This makes the bearing suitable for high-speed applications.
- Optimized Internal Clearance: Supplied with a standard CN radial internal clearance, which is suitable for a wide range of operating conditions and ensures smooth, low-noise operation.
- Material & Compliance: Manufactured from high-grade chrome steel for both rings and balls, ensuring durability and long service life. The bearing is ROHS and REACH compliant, meeting stringent environmental regulations.
1209 K Bearing Typical Application Areas
This bearing is commonly specified in machinery and systems where high rigidity, precision, and speed are paramount. Key industries and equipment include:
- Electric Motors and Generators
- Gearboxes and Transmission Systems
- Industrial Pumps and Compressors
- Material Handling Equipment
- Agricultural Machinery
