1311KTN
1300 Series Self Aligning Ball Bearings
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Part No.
Part No.
1311KTN
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
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:
$ 88.4
/ each
In Stock
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1311KTN Bearing Product Overview & Core Advantages
The 1311KTN is a double row angular contact ball bearing designed for exceptional performance in demanding applications. This precision bearing features a tapered bore (1:12) and is pre-lubricated for immediate use. Its primary advantage lies in its ability to handle significant combined loads—both radial and axial—while offering high rigidity due to its double-row construction. The optimized internal geometry and high-grade materials ensure reliable operation, making it ideal for high-precision machinery requiring robust support and long service life.
1311KTN Bearing Model Code Explained, Specifications & Naming Convention
The model number 1311KTN can be broken down as follows:
- 1311: Basic designation indicating a metric double row angular contact ball bearing with a 55mm bore and 120mm outside diameter.
- K: Denotes a tapered bore with a 1:12 ratio, designed for precise mounting on adapter sleeves or withdrawal sleeves for secure shaft fixation.
- TN: Signifies the cage material. TN indicates a molded nylon cage, which offers the advantages of low weight, reduced friction, and excellent performance at high speeds.
1311KTN Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row design provides superior rigidity and enables the bearing to support substantial radial loads and bidirectional axial loads simultaneously, making it suitable for applications with combined loading.
- High-Speed Performance: The lightweight nylon (TN) cage minimizes centrifugal forces, reduces friction, and contributes to a high limiting speed of 7,500 rpm, ensuring stable operation in high-speed applications.
- Tapered Bore for Secure Mounting: The K-designation tapered bore allows for precise axial positioning and a tight, interference fit on the shaft when used with appropriate adapter sleeves, eliminating creep and enhancing operational reliability.
- Pre-Lubricated & Ready for Use: The bearing comes pre-lubricated, simplifying installation and providing immediate protection, suitable for a standard operating temperature range of -30°C to 110°C.
- Material Quality: Manufactured from chrome steel for both rings and balls, ensuring high durability, wear resistance, and a long operational lifespan under demanding conditions.
1311KTN Bearing Typical Application Areas
The 1311KTN is engineered for robust performance in various industrial sectors. Key applications include:
- Electric Motors & Generators: Particularly where a tapered bore is specified for secure shaft mounting.
- Industrial Gearboxes: Providing high rigidity and handling combined loads in power transmission systems.
- Material Handling Equipment: Such as conveyor pulleys and vibratory machinery.
- Agricultural Machinery: Including tractor transmissions and PTO shafts.
- Pumps & Compressors: Where reliable performance under radial and axial loads is critical.
