SKF 1206 ETN9/C3 self-aligning ball bearing
- Brand
- SKF
- Category
- Bearings
- Subcategory
- Self-aligning ball bearings
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Since 1945 · Martínez, Buenos Aires, Argentina
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Other brands in this category
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How to read SKF 1206 ETN9/C3
- 12Series
- Self-aligning ball bearings, 12 series. For the same bore, each series has a different outside diameter and width.
- 06Bore
- 30 mm bore: 06 × 5.
- ETN9/C3Suffix
- SKF suffix: it defines the variant (sealing, cage, internal clearance or other features).
1206 is the standard (ISO) basic designation: it defines the type, the series and the bore.
Description
The SKF 1206 ETN9/C3 bearing has a 30 mm bore, a 62 mm outside diameter and a 16 mm width (30 x 62 x 16 mm).
SKF 1206 ETN9/C3 is a reference of self-aligning ball bearing, within Bearings. Request a quote for 1206 ETN9/C3 via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.
SKF self-aligning ball bearings are ball bearings with two rows and a spherical raceway in the outer ring, which allows them to compensate for angular misalignment between shaft and housing. They are used in applications where perfect alignment cannot be guaranteed, such as belt drives, fans or agricultural machine shafts. Their self-aligning design makes them versatile and easy to mount.
The designation of these bearings follows a clear pattern. The basic number, for example 1205, indicates the size: the first two digits identify the self-aligning ball bearing series, and the last two the bore diameter. The suffix ETN9 indicates that the cage is made of polyamide reinforced with fiberglass, suitable for high speeds and moderate temperatures. The suffix /C3 indicates a radial internal clearance greater than normal, useful when there are tight fits or thermal differences between shaft and housing. Thus, a 1205 ETN9/C3 combines these characteristics.
These bearings are used in equipment where misalignment is inevitable: belt and chain drives, industrial fans, centrifugal pumps, agricultural machine shafts, conveyors and mixers. In Argentina, they are common in the food, chemical, cement and agricultural industries. Their self-aligning capability reduces wear and extends service life in assemblies where precise alignment between supports cannot be achieved.
To select correctly, take into account radial and axial load, rotation speed and environmental conditions. Sealing is key: if there is dust or moisture, choose variants with seals or shields. C3 clearance is recommended when the fit is tight or there are thermal gradients. During mounting, avoid striking the rings and use suitable tools. Lubrication must be as specified by the manufacturer, and it is essential to verify initial alignment to take advantage of the self-aligning capability.
Regarding equivalences, SKF self-aligning ball bearings can be interchanged with those of other brands that follow the same basic designation, such as FAG, NSK or NTN, as long as dimensions and clearance match. Suffixes may vary between manufacturers, so it is necessary to verify that the characteristics (cage, clearance, sealing) are equivalent.
If you need an SKF self-aligning ball bearing, at MR Accesorios Industriales we advise you. Send us the complete part number via WhatsApp and we will quote you promptly. We work with the main brands. Write to us and we will help you find the right solution for your application.
Dimensions
Boundary dimensions of the basic designation 1206 per ISO 15: 30 x 62 x 16 mm (d x D x B).
- Bore
- 30mm
- Outside diameter (D)
- 62mm
- Width (B)
- 16mm
The same size in other brands
Pages from other brands with the basic designation 1206: 30 x 62 x 16 mm (d x D x B) per ISO 15.
They share the boundary dimensions set by ISO 15, not the technical data: seals or shields, internal clearance, cage and load rating can differ by brand and suffix. We quote each one by its full part number.
Frequently Asked Questions
- What are the dimensions of the SKF 1206 ETN9/C3 bearing?
- The SKF 1206 ETN9/C3 bearing has a 30 mm bore, a 62 mm outside diameter and a 16 mm width (30 x 62 x 16 mm). These are the standardised boundary dimensions (ISO 15) of the basic designation 1206.
- What does the suffix ETN9 mean in an SKF bearing?
- The suffix ETN9 indicates that the bearing has a polyamide cage reinforced with fiberglass, designed for high speeds and moderate temperatures. It is a strong, lightweight cage.
- When is it advisable to use a bearing with C3 clearance?
- C3 clearance is greater than normal and is recommended when there are tight fits, thermal differences between shaft and housing, or when expansion needs to be compensated. It helps prevent excessive preload.
- How is a self-aligning ball bearing mounted?
- It is mounted carefully, avoiding direct blows on the rings. Use suitable tools and verify initial alignment. The self-aligning capability compensates for small misalignments, but it is important to start from good alignment.