1309-K C/3
1300 Series Self Aligning Ball Bearings
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Part No.
Part No.
1309-K C/3
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Double Row
Weight
0.96 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
100 mm
Outside diameter tolerance
-0.015mm to 0
Width
25 mm
Width tolerance
-0.12mm to 0
Chamfer dimension
1.5 mm
Inner Ring Dimensions
Shoulder diameter inner ring
67.71 mm
Outer Ring Dimensions
Shoulder diameter outer ring
87.8 mm
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
8775 lbf
Radial static load rating
3015 lbf
Limiting speed
8.5 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:
$ 53.05
/ each
In Stock
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1309-K C/3 Bearing Product Overview & Core Advantages
The 1309-K C/3 is a double row angular contact ball bearing designed for exceptional performance in demanding applications. This precision bearing excels at simultaneously handling significant combined loads, including radial forces and bidirectional axial loads. Its compact design, featuring a 1:12 tapered bore for secure shaft mounting, ensures high rigidity and reliable operation in high-precision machinery. Pre-lubricated and built with a nylon cage, it is engineered for smooth operation and long service life.
1309-K C/3 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 1309 | Standard bearing series designation, indicating the core dimensions (45mm bore, 100mm OD). |
| K | Indicates a tapered bore with a 1:12 ratio for precise interference fit on the shaft. |
| C/3 | Specifies the radial internal clearance group. C3 denotes a clearance greater than standard (CN), suitable for applications with thermal expansion or where a tighter fit is used. |
1309-K C/3 Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row ball complement and angular contact design provide superior stiffness and enable the bearing to support substantial combined radial and axial loads from both directions.
- Optimized for Precision: The 1:12 tapered bore allows for precise axial adjustment during mounting to achieve optimal internal clearance and preload, enhancing rotational accuracy.
- High-Speed Capability: The lightweight nylon cage ensures stable guidance of the balls, reducing friction and centrifugal forces, which contributes to a high limiting speed of 8,500 rpm.
- Ready-to-Install & Durable: The bearing comes pre-lubricated and features an open design, making it ready for immediate use in systems with a centralized lubrication supply, ensuring consistent performance across its operating temperature range.
1309-K C/3 Bearing Typical Application Areas
This bearing is ideally suited for applications requiring high rigidity and precision under combined loads. Key industries and machinery include:
- Machine Tool Spindles
- Gearboxes and Transmissions
- Industrial Pumps and Compressors
- Agricultural Machinery
- Material Handling Equipment
