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SKF
Self-Aligning Ball B. SKF 2206 EKTN9/C3
- Technical data
- Inner diameter
- 30 mm
- Outer diameter
- 62 mm
- Width
- 20 mm
- Material
- Standard bearing steel
- Ball rows
- Double row bearing
- Seal
- None, open bearing
- Cage
- Polyamide cage
- Clearance
- Slightly increased radial clearance
- Running accuracy
- Tolerance class P0/PN2 / ABEC 1
- Bore
- Tapered bore (1:12)
- Inner ring
- Standard version
- Temperature range
- -30 to +120 °C
- Weight
- 0,26 kg
| Scale quantity | Your discount | Unit price |
|---|---|---|
| 25 | 1,61 € | 30,50 € |
| 35 | 3,21 € | 28,90 € |
Self-Aligning Ball B. SKF 2206 EKTN9/C3
The SKF 2206 EKTN9/C3 double-row self-aligning ball bearing (30x62x20 mm) flexibly compensates for misalignment and features a tapered bore and C3 clearance.
The SKF 2206 EKTN9/C3 self-aligning ball bearing belongs to the group of self-aligning rolling bearings. Thanks to the common hollow-spherical raceway in the outer ring, the bearing accommodates misalignment between the shaft and the housing. The component is made of standard rolling-bearing steel (100Cr6) and is operated in an open design without integrated seals. A lightweight polyamide cage guides the rolling elements with low vibration. This design is suitable for an operating temperature range of -30 to +120 degrees.
What is the 2206 EKTN9/C3 self-aligning ball bearing suitable for?
The bearing is used where elastic shaft deflection or misalignment occurs. Typical applications include bearing arrangements with long shaft runs or applications with manufacturing-related misalignments. Thanks to its double-row design, the bearing accommodates radial forces and moderate axial forces in both directions. As this is an open bearing, users can flexibly determine the type of lubricant and relubrication intervals via the surrounding bearing housing.
Why are the tapered bore and the C3 clearance crucial?
The tapered bore (1:12 taper) allows mounting directly onto a tapered shaft seat or, using a suitable mounting or withdrawal sleeve, onto cylindrical shafts. During installation, the inner ring is pushed on axially, which reduces the internal bearing clearance. The factory-set increased radial bearing clearance (C3) helps to ensure that the required operating clearance is maintained after press-fitting and under operational heating. The bearing complies with tolerance class P0/PN (ABEC 1).
What are the key features of the 2206 EKTN9/C3 self-aligning ball bearing?
A double-row roller bearing with a 30 mm bore, 62 mm outer diameter and 20 mm width. Thanks to the spherical outer ring raceway, it dynamically compensates for angular misalignment between the inner and outer rings. It features a tapered inner bore, increased C3 clearance and a polyamide cage.
What does the suffix EKTN9/C3 mean?
The designation is broken down into several technical characteristics: ‘K’ denotes a tapered bore with a 1:12 taper. The suffix ‘TN9’ stands for a polyamide cage, whilst ‘C3’ indicates a radial bearing clearance that is greater than the standard.
How is a bearing with a tapered bore fitted?
A self-aligning ball bearing with a tapered bore is mounted either directly onto a tapered shaft journal or, with the aid of a clamping or withdrawal sleeve, onto a smooth cylindrical shaft. A tight fit is achieved by axially sliding the inner ring, which reduces the radial bearing clearance in a controlled manner.
What are the advantages of the TN9 polyamide cage?
Polyamide cages are lightweight and offer good damping properties. They help to ensure smooth running and reduce the acceleration forces acting on the rolling elements. With this cage material, the permissible continuous operating temperature of the bearing ranges from -30 to +120 degrees.
Does the 2206 EKTN9/C3 self-aligning ball bearing need to be lubricated?
Yes, as this is an open roller bearing without sealing washers, it is not pre-lubricated with grease at the factory. Before initial commissioning, it must be lubricated with a suitable rolling-element bearing grease or oil via the surrounding housing; regular relubrication is also required, depending on the operating conditions.
What is the bearing’s tolerance class?
The bearing is manufactured to the standard tolerance P0 or PN, which corresponds to the ABEC 1 classification. This precision class is the established industry standard for the vast majority of applications in general mechanical and plant engineering.
SKF Group
Sven Wingquists Gata 2, 415 50 Gothenburg, Sweden
info@skf.com, https://www.skf.com/uk/footer/site-ownership
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