1211 EKTN9/W64
1200 Series Self Aligning Ball Bearings
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Part No.
Part No.
1211 EKTN9/W64
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Double Row
Weight
0.71 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
100 mm
Outside diameter tolerance
-0.015mm to 0
Width
21 mm
Width tolerance
-0.15mm to 0
Chamfer dimension
1.5 mm
Inner Ring Dimensions
Shoulder diameter inner ring
70.3 mm
Outer Ring Dimensions
Shoulder diameter outer ring
86.5 mm
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
6210 lbf
Radial static load rating
2385 lbf
Limiting speed
9 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
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In Stock
Price available upon request.
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1211 EKTN9/W64 Bearing Product Overview & Core Advantages
The 1211 EKTN9/W64 is a double row angular contact ball bearing designed for applications requiring high rigidity and precise operation. This precision bearing features a tapered bore (1:12) and is pre-lubricated for immediate use. Its double row design enables it to support substantial combined loads—both radial and axial forces—making it an ideal choice for compact, high-performance machinery where space and reliability are critical.
1211 EKTN9/W64 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 1211 | Standard bearing series designation, indicating bearing dimensions (55mm bore, 100mm OD, 21mm width). |
| EK | Optimized internal design for enhanced load capacity and performance. |
| TN9 | Nylon (polyamide) cage, contributing to lower friction, reduced weight, and suitability for high-speed operation. |
| W64 | Indicates the bearing is pre-lubricated with a specific grease, ready for operation without initial lubrication. |
1211 EKTN9/W64 Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row ball complement and optimized internal geometry provide exceptional stiffness, enabling stable support under significant combined loads and moment loads.
- High-Speed Performance: The lightweight TN9 nylon cage minimizes centrifugal forces and friction, allowing for a high limiting speed of 9,000 rpm.
- Tapered Bore for Secure Mounting: The 1:12 taper allows for precise interference fit on tapered shafts or adapter sleeves, ensuring zero slippage and accurate positioning.
- Pre-Lubricated & Ready-to-Use: Factory-applied grease (W64) simplifies installation and provides reliable lubrication from the first rotation, suitable for the specified temperature range of -30°C to 110°C.
- Standard Internal Clearance: The CN radial internal clearance is suitable for a wide range of common operating conditions.
1211 EKTN9/W64 Bearing Typical Application Areas
- Electric Motor Bearings
- Industrial Gearboxes
- Pump and Compressor Shafts
- Material Handling Equipment
- Agricultural Machinery
