SKF 1212 ETN9/C3 self-aligning ball bearing
- Brand
- SKF
- Category
- Bearings
- Subcategory
- Self-aligning ball bearings
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Decoding SKF 1212 ETN9/C3
- 12Series
- Self-aligning ball bearings, 12 series. Series differ in outside diameter and width even when the bore is the same.
- 12Bore
- Bore 60 mm (12 × 5).
- ETN9/C3Suffix
- SKF suffix: identifies the variant, such as seals or shields, cage, internal clearance or other features.
1212 is the standard ISO basic designation, which sets the bearing type, series and bore.
Description
SKF 1212 ETN9/C3 measures 60 mm across the bore and 110 mm across the outside diameter; its width is 22 mm (60 x 110 x 22 mm).
SKF 1212 ETN9/C3 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 1212 ETN9/C3 and any equivalents.
When shaft and housing alignment is not perfect, SKF self-aligning ball bearings series 12 keep the assembly running. Two rows of balls run on a spherical raceway in the outer ring, so the bearing absorbs angular misalignment between the two components. Belt drives, fans and agricultural machine shafts are typical places where this design earns its place, and mounting stays simple.
Reading the designation helps you order the right part. Take 1205 ETN9/C3: the basic number 1205 gives the size, where the first two digits point to the self-aligning ball bearing series and the last two to the bore diameter. ETN9 means a polyamide cage reinforced with fiberglass, made for high speeds and moderate temperatures. /C3 means radial internal clearance above normal, which suits tight fits or temperature differences between shaft and housing.
These bearings fit equipment where misalignment is unavoidable: belt and chain drives, industrial fans, centrifugal pumps, agricultural machine shafts, conveyors and mixers. They are common in the food, chemical, cement and agricultural industries. Because the bearing compensates for angular offset, wear is reduced and service life improves in assemblies where supports cannot be aligned precisely.
Selection comes down to radial and axial load, rotation speed and the environment. Where dust or moisture is present, sealed or shielded variants are the better choice. C3 clearance is recommended for tight fits or thermal gradients. During mounting, do not strike the rings and use suitable tools. Follow the manufacturer's lubrication specification, and check initial alignment so the self-aligning capability can do its job.
For equivalences, SKF self-aligning ball bearings interchange with other brands that use the same basic designation, such as FAG, NSK or NTN, provided dimensions and clearance match. Suffixes differ between manufacturers, so confirm that cage, clearance and sealing are equivalent.
If you need an SKF self-aligning ball bearing, MR Industrial Accessories can help you choose. Send the complete part number by WhatsApp or email and the team will reply promptly with a quote, suggest equivalents and assist with selection.
Dimensions
60 x 110 x 22 mm (d x D x B): boundary dimensions for basic designation 1212, according to ISO 15.
- Bore
- 60mm
- Outside diameter (D)
- 110mm
- Width (B)
- 22mm
Same size, other brands
Other brands' pages with basic designation 1212: 60 x 110 x 22 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 1212 ETN9/C3 bearing: what are its dimensions?
- SKF 1212 ETN9/C3 measures 60 mm across the bore and 110 mm across the outside diameter; its width is 22 mm (60 x 110 x 22 mm). Those are the boundary dimensions standardized in ISO 15 for basic designation 1212.
- What does the ETN9 suffix mean on an SKF bearing?
- ETN9 identifies a polyamide cage reinforced with fiberglass, intended for high speeds and moderate temperatures. It is strong and lightweight.
- When should I use a bearing with C3 clearance?
- C3 clearance is above normal and fits tight fits, thermal differences between shaft and housing, or cases where expansion must be compensated. It helps avoid excessive preload.
- How do I mount a self-aligning ball bearing?
- Mount it carefully, without striking the rings directly. Use suitable tools and verify initial alignment. The self-aligning capability handles small misalignments, but good alignment at the start matters.