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SKF
Self-Aligning Ball B. SKF 1207 EKTN9/C3
- Technical data
- Inner diameter
- 35 mm
- Outer diameter
- 72 mm
- Width
- 17 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
- 0,32 kg
| Scale quantity | Your discount | Unit price |
|---|---|---|
| 25 | 1,45 € | 27,48 € |
| 35 | 2,90 € | 26,03 € |
Self-Aligning Ball B. SKF 1207 EKTN9/C3
The SKF 1207 EKTN9/C3 self-aligning ball bearing compensates for misalignment and, with a 35 mm bore and tapered seat, provides a secure fit.
The SKF 1207 EKTN9/C3 double-row self-aligning ball bearing is suitable for bearing arrangements where shaft deflection or misalignment may occur. Thanks to the shared hollow spherical raceway in the outer ring, the two rows of balls self-align during operation. Manufactured from standard rolling-bearing steel (100Cr6), this design features a tapered bore with a 1:12 taper ratio and a low-noise polyamide cage.
When is the 1207 EKTN9/C3 self-aligning ball bearing recommended for use?
This rolling bearing is designed for rotating shafts where misalignment between the inner and outer rings needs to be compensated for. Typical applications include bearing arrangements with larger shaft spacings or flexible housing structures. As this is an open bearing without integrated sealing washers, the bearing housing requires external sealing and lubrication. The bearing is designed for a temperature range of –30 to +120 degrees Celsius.
What are the advantages of the tapered bore and the C3 clearance?
The tapered bore (1:12) allows for direct mounting on tapered shaft journals or, using suitable clamping or withdrawal sleeves, on smooth cylindrical shafts. Installation using a sleeve facilitates the adjustment of the radial clearance. The increased bearing clearance class C3 helps to ensure that, after being pressed onto the tapered seat or when heated during continuous operation, sufficient radial clearance is maintained to prevent stress build-up.
What makes the 1207 EKTN9/C3 self-aligning ball bearing stand out?
This double-row roller bearing has a common hollow-spherical raceway in the outer ring, which enables it to automatically compensate for angular misalignment and shaft deflection. It features a tapered bore with a 1:12 taper, a lightweight polyamide cage and an increased clearance of C3.
What are the dimensions of the warehouse?
The self-aligning ball bearing has a bore diameter of 35 mm, an outside diameter of 72 mm and a width of 17 mm. These dimensions correspond to the standardised dimensions of the 1207 series with standard tolerance to P0/PN or ABEC 1.
What does the suffix C3 mean for this pendulum bearing?
The designation C3 indicates an increased radial bearing clearance compared with the standard version. As the bearing clearance naturally decreases when the inner ring is radially slid onto the tapered fit or clamping sleeve, the C3 clearance prevents the rolling elements from becoming jammed during operation.
How is a self-aligning ball bearing with a tapered bore fitted?
Bearings with a tapered bore are usually mounted on cylindrical shafts using a clamping or withdrawal sleeve, or pressed directly onto a tapered seat. To check that the bearing is securely seated, the reduction in radial clearance is measured using a feeler gauge whilst the bearing is being pushed on axially.
What material is the cage made of?
In this version, a polyamide cage (identified by the designation TN9) guides the rows of balls. This material ensures that the cage is lightweight, offers good damping properties and operates reliably within the specified temperature range of -30 to +120 degrees Celsius.
Does the 1207 EKTN9/C3 self-aligning ball bearing need to be lubricated?
Yes, this is an open bearing without integrated grinding or cover discs. During installation, it must be initially lubricated with a suitable grease or lubricating oil and protected from contamination by the surrounding housing.
SKF Group
Sven Wingquists Gata 2, 415 50 Gothenburg, Sweden
info@skf.com, https://www.skf.com/uk/footer/site-ownership
10006606