1311 EKTN9/C3
1300 Series Self Aligning Ball Bearings
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Part No.
Part No.
1311 EKTN9/C3
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Double Row
Weight
1.6 kg
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
55 mm
Bore diameter tolerance
-0.015mm to 0
Bore type
Taper 1:12
Outside diameter
120 mm
Outside diameter tolerance
-0.015mm to 0
Width
29 mm
Width tolerance
-0.15mm to 0
Chamfer dimension
2 mm
Inner Ring Dimensions
Shoulder diameter inner ring
77.9 mm
Outer Ring Dimensions
Shoulder diameter outer ring
101.4 mm
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
11408 lbf
Radial static load rating
4050 lbf
Limiting speed
7.5 X 1000 rpm
Lubrication
Lubricated
Radial internal clearance
C3
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:
$ 82.67
/ each
In Stock
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1311 EKTN9/C3 Bearing Product Overview & Core Advantages
The 1311 EKTN9/C3 is a double row angular contact ball bearing designed for exceptional performance in demanding applications. This precision bearing features a tapered bore for secure mounting on adapter sleeves or withdrawal sleeves, ensuring precise shaft positioning. Its core advantages include the ability to accommodate combined loads (significant radial and moderate axial loads in both directions), high operational reliability due to its double-row design, and optimized internal geometry for smooth running. The C3 radial internal clearance makes it particularly suitable for applications with thermal expansion or where interference fits are used.
1311 EKTN9/C3 Bearing Model Code Explained, Specifications & Naming Convention
The model number 1311 EKTN9/C3 is decoded as follows:
- 1311: Basic designation indicating a double row angular contact ball bearing with a specific dimension series.
- EK: Designates a tapered bore (1:12 taper).
- TN9: Indicates the cage material and type. T represents a pressed steel cage, and N9 signifies a specific cage design and guiding method, contributing to the bearing's high-speed capability and stability.
- C3: Specifies a radial internal clearance greater than normal (C0), suitable for applications with expected thermal expansion or interference fits.
1311 EKTN9/C3 Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row ball complement provides superior rigidity and enables the bearing to support substantial radial loads and bidirectional axial loads simultaneously, making it ideal for applications with combined loading.
- Optimized for High Speeds: The TN9 pressed steel cage is lightweight and robust, enabling high rotational speeds and reducing centrifugal forces, which is critical for the bearing's high-speed performance.
- Precise Mounting: The tapered bore (1:12) allows for precise axial positioning and secure clamping on the shaft, eliminating fretting corrosion and ensuring reliable operation.
- Versatile Internal Clearance: The C3 clearance group accommodates thermal expansion in the shaft or housing, preventing preload and potential seizure in high-temperature or high-interference fit scenarios.
- Durable Construction: Manufactured from high-grade chrome steel for both rings and balls, ensuring long service life and consistent performance under heavy loads.
1311 EKTN9/C3 Bearing Typical Application Areas
This bearing is engineered for high-performance machinery and is commonly found in:
- Electric Motors and Generators
- Industrial Gearboxes and Transmissions
- Vibrating Screens and other material handling equipment
- Pump and Compressor Systems
- Agricultural and Construction Machinery
