1211 EKTN9/C3W64
1200 Series Self Aligning Ball Bearings
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1211 EKTN9/C3W64 Bearing Product Overview & Core Advantages
The 1211 EKTN9/C3W64 is a double row angular contact ball bearing engineered for superior performance in demanding applications. This precision bearing is designed to accommodate combined loads, simultaneously handling significant radial loads and axial loads in both directions. Its compact design, featuring a tapered bore (1:12), offers high rigidity and rotational accuracy, making it an ideal choice for high-reliability machinery. Pre-lubricated and featuring a C3 radial internal clearance, it is optimized for operational stability across a wide temperature range.
1211 EKTN9/C3W64 Bearing Model Code Explained, Specifications & Naming Convention
- 1211: Basic designation indicating a metric series double row angular contact ball bearing with a 55 mm bore and 100 mm outside diameter.
- EK: Designates an optimized internal design and a tapered bore (1:12) for secure mounting on adapter sleeves or withdrawal sleeves.
- TN9: Signifies the cage material and type. The TN9 suffix indicates a glass fiber reinforced polyamide (Nylon) cage, which contributes to lower friction, reduced weight, and superior performance at high speeds.
- C3: Denotes a radial internal clearance greater than normal (C0). This is selected for applications where thermal expansion of the shaft and housing must be accommodated, ensuring optimal performance under operational temperatures.
- W64: Indicates that the bearing is lubricated with a specific, high-performance grease suitable for the specified temperature range (-30° to 110 °C).
1211 EKTN9/C3W64 Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The double row ball complement and contact angle design provide high rigidity, enabling the bearing to support substantial combined loads (radial and bidirectional axial loads) with minimal deflection.
High-Speed Performance: The lightweight TN9 polymer cage minimizes centrifugal forces, reduces friction, and allows for a limiting speed of 9,000 rpm, making it a true high-speed bearing.
Precise Mounting & Stability: The tapered bore (1:12) allows for precise axial positioning and a secure, interference fit on the shaft when used with an adapter sleeve, enhancing overall system stability.
Ready-to-Install & Durable: Supplied with a pre-applied lubricant (W64), the bearing is ready for immediate use, reducing maintenance requirements and ensuring long-term, reliable operation within its specified temperature range.
1211 EKTN9/C3W64 Bearing Typical Application Areas
This bearing's combination of high rigidity, high-speed capability, and ability to handle combined loads makes it suitable for a wide range of industrial applications, including:
- Electric Motors and Generators
- Gearboxes and Transmission Systems
- Industrial Pumps and Compressors
- Material Handling Equipment
- Agricultural Machinery
