1311 KC3
1300 Series Self Aligning Ball Bearings
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Part No.
Part No.
1311 KC3
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:
$ 91.34
/ each
In Stock
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1311 KC3 Bearing Product Overview & Core Advantages
The 1311 KC3 is a double row angular contact ball bearing engineered for superior performance in demanding applications. This precision bearing is designed to accommodate significant combined loads, including radial and bidirectional axial loads, within a single, compact unit. Its double row construction provides enhanced rigidity and load-carrying capacity compared to single row designs. Manufactured with high-grade chrome steel and featuring a C3 radial internal clearance, it is optimized for applications requiring reliable operation under varying thermal and load conditions.
1311 KC3 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 1311 | Standard bearing series designation, indicating the core dimensions (55mm bore, 120mm OD, 29mm width). |
| K | Indicates a tapered bore with a 1:12 ratio, facilitating precise bearing mounting and adjustment on adapter sleeves or withdrawal sleeves. |
| C3 | Specifies a radial internal clearance greater than normal (C0). This is crucial for applications with expected thermal expansion or where interference fits are used, preventing preload and ensuring smooth operation. |
1311 KC3 Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row ball bearing design provides a robust and stable support structure, significantly increasing rigidity and enabling it to handle heavy combined loads effectively.
- Tapered Bore (1:12): The K-suffix tapered bore allows for precise axial displacement during mounting, enabling optimal clearance control and simplifying installation and disassembly on shaft seats.
- Optimized Internal Clearance: The C3 clearance group ensures reliable performance in applications prone to thermal expansion or where interference fits are standard, preventing seizure and reducing friction.
- Nylon Cage & High-Speed Capability: The lightweight and robust nylon cage ensures stable ball guidance, reduces centrifugal forces, and contributes to the bearing's high limiting speed of 7,500 rpm, making it suitable for high-speed applications.
- Pre-Lubricated & Ready-to-Use: The bearing comes pre-lubricated, ensuring immediate operational readiness and reducing initial setup time.
1311 KC3 Bearing Typical Application Areas
- Industrial Gearboxes and Drives
- Material Handling Conveyor Systems
- Agricultural Machinery
- Vibrating Screens and Shakers
- Electric Motors and Generators
- Pumps and Fans
