SKF 1209 ETN9 self-aligning ball bearing
- Brand
- SKF
- Category
- Bearings
- Subcategory
- Self-aligning ball bearings
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Other brands for this category
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Decoding SKF 1209 ETN9
- 12Series
- Self-aligning ball bearings, 12 series. Series differ in outside diameter and width even when the bore is the same.
- 09Bore
- Bore 45 mm (09 × 5).
- ETN9Suffix
- SKF suffix: identifies the variant, such as seals or shields, cage, internal clearance or other features.
1209 is the standard ISO basic designation, which sets the bearing type, series and bore.
Description
SKF 1209 ETN9 measures 45 mm across the bore and 85 mm across the outside diameter; its width is 19 mm (45 x 85 x 19 mm).
SKF 1209 ETN9 belongs to self-aligning ball bearing, part of our Bearings range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for 1209 ETN9 and any equivalents.
For shafts that cannot be perfectly aligned with the housing, SKF offers the ETN9 series of self-aligning ball bearings. These double-row bearings feature a spherical raceway in the outer ring, which lets the bearing accommodate angular misalignment. Belt drives, fans, and agricultural equipment are typical applications where this capability matters. MR Industrial Accessories supplies this series as part of its SKF bearing range.
The part number tells you what you are getting. In a designation like 1200 ETN9 through 1207 ETN9, the first digit (1) denotes the diameter series, while the following two digits give the size code. The basic number alone (1200, 1201, 1202, etc.) sets both size and load capacity. The ETN9 suffix identifies a cage made of glass fiber reinforced polyamide, which handles moderate temperatures and high speeds. Understanding this structure helps you order the exact replacement.
Self-aligning ball bearings are the right choice when shaft deflection or mounting misalignment is unavoidable. They appear in belt and chain drives, industrial fans, centrifugal pumps, textile machinery, agricultural implements, and conveyors. In dusty or humid environments, such as food processing, cement, or farming, they maintain performance where rigid bearings would fail. The self-aligning action minimizes parasitic loads and supports the durability of the assembly.
Selection depends on radial and axial loads, speed, and the surrounding conditions. If dust or moisture is present, consider variants with seals or shields. Lubrication must match the temperature and speed; many of these bearings arrive pre-lubricated. During installation, align the bearing correctly and avoid impacts that could damage rings or balls. The ETN9 cage itself requires no extra maintenance.
Interchangeability is possible with other brands that use the same dimensional designation, such as FAG, NSK, or NTN, as long as dimensions and cage suffix match. However, suffixes are not always equivalent: SKF's ETN9 may correspond to a different code in another nomenclature. To ensure a safe replacement, verify the critical dimensions and consult a specialist. MR Industrial Accessories can assist with the selection.
To replace an SKF ETN9 series self-aligning ball bearing, send the complete part number via WhatsApp. MR Industrial Accessories will provide a quote and help you find the best option for your equipment.
Dimensions
45 x 85 x 19 mm (d x D x B): boundary dimensions for basic designation 1209, according to ISO 15.
- Bore
- 45mm
- Outside diameter (D)
- 85mm
- Width (B)
- 19mm
Same size, other brands
Other brands' pages with basic designation 1209: 45 x 85 x 19 mm (d x D x B) per ISO 15.
What they share are the ISO 15 boundary dimensions, not the specs: seals or shields, internal clearance, cage and load rating may vary with brand and suffix. Every quote is by full part number.
Frequently asked questions
- SKF 1209 ETN9 bearing: what are its dimensions?
- SKF 1209 ETN9 measures 45 mm across the bore and 85 mm across the outside diameter; its width is 19 mm (45 x 85 x 19 mm). Those are the boundary dimensions standardized in ISO 15 for basic designation 1209.
- What does the ETN9 suffix mean on an SKF bearing?
- ETN9 indicates a glass fiber reinforced polyamide cage, designed for high-speed applications and moderate temperatures. This cage is lightweight, resistant, and does not require additional lubrication.
- When should I use a self-aligning ball bearing instead of a deep groove ball bearing?
- Use a self-aligning bearing when misalignment exists between shaft and housing, whether from shaft flexing, imperfect mounting, or structure settling. It compensates for that misalignment and prevents parasitic loads that would reduce service life.
- How do I order an SKF ETN9 self-aligning ball bearing at MR?
- Send the full part number via WhatsApp, for example 1205 ETN9, and we will quote you. If you are not sure of the part number, send us the shaft and housing dimensions, and we will help you identify it.