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SKF
Self-Aligning Ball B. SKF 1212 ETN9
- Technical data
- Inner diameter
- 60 mm
- Outer diameter
- 110 mm
- Width
- 22 mm
- Material
- Standard bearing steel
- Ball rows
- Double row bearing
- Seal
- None, open bearing
- Cage
- Polyamide cage
- Clearance
- Normal radial clearance
- Running accuracy
- Tolerance class P0/PN2 / ABEC 1
- Bore
- Cylindrical bore
- Inner ring
- Standard version
- Temperature range
- -30 to +120 °C
- Weight
- 0,9 kg
| Scale quantity | Your discount | Unit price |
|---|---|---|
| 15 | 3,02 € | 57,49 € |
| 30 | 6,05 € | 54,46 € |
Self-Aligning Ball B. SKF 1212 ETN9
The SKF 1212 ETN9 double-row self-aligning ball bearing, with a 60 mm bore and a polyamide cage, flexibly compensates for angular misalignment.
The 1212 ETN9 self-aligning ball bearing is a double-row rolling bearing made from standard bearing steel (100Cr6) with a cylindrical bore. Thanks to the spherical raceway in the outer ring, the bearing automatically adjusts itself in the event of shaft deflection. This SKF design has an internal diameter of 60 mm and an external diameter of 110 mm, with a width of 22 mm. With standard radial clearance and tolerance class P0 (ABEC 1), the component is suitable for a wide range of industrial applications.
What is the 1212 ETN9 self-aligning ball bearing suitable for?
This self-aligning bearing is primarily used where misalignment occurs between the housing and the shaft, or where shafts deflect elastically under radial loads. As the outer ring remains angularly adjustable, the bearing compensates for misalignment during operation without any significant increase in friction. Designs with larger bearing spacings benefit directly from this inherent adjustability during operation.
What are the characteristics of the ETN9 polyamide cage?
The suffix ETN9 denotes a polyamide cage that guides the two rows of balls within the bearing. The material dampens vibrations during operation and ensures quiet running at temperatures ranging from –30 to +120 degrees Celsius. As this is an open bearing without integrated seals, the lubricant can be selected to suit the ambient conditions. In dusty environments, external housing seals are recommended.
What are the key features of the 1212 ETN9 self-aligning ball bearing?
A double-row roller bearing with a shared hollow-spherical outer ring raceway, allowing the inner ring and balls to adjust freely during operation. In the event of misalignment or slight shaft deflection, the system continues to run without seizing. This design features a flexible polyamide cage and standard bearing clearance.
What are the dimensions of the 1212 ETN9 self-aligning ball bearing?
The internal diameter is 60 mm for cylindrical shaft seats, the external diameter is 110 mm and the width is 22 mm. These dimensions correspond to the standard design in accordance with tolerance class P0 or ABEC 1 and ensure a precise fit in the housing seat.
What does the suffix ETN9 mean at SKF?
ETN9 refers to a polyamide cage. This plastic cage is characterised by low friction and low weight. It guides the rolling elements with minimal vibration and is suitable for an operating temperature range of -30 to +120 degrees Celsius.
What type of lubrication does the open bearing require?
As an open roller bearing, this design is supplied ex-works without sealing washers or grease. It can be lubricated flexibly with oil or grease, depending on the specifications of the respective bearing location. To prevent the ingress of dirt particles, external sealing elements on the housing are recommended.
What is the bearing clearance for this model?
This design features a standard radial bearing clearance. This standard bearing clearance is designed for typical fit conditions and moderate operating temperatures. It ensures that, once the inner ring has been fitted onto the shaft, there remains sufficient radial clearance to allow the rolling elements to run smoothly.
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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