SKF 1216 K/C3 self-aligning ball bearing
- Brand
- SKF
- Category
- Bearings
- Subcategory
- Self-aligning ball bearings
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Decoding SKF 1216 K/C3
- 12Series
- Self-aligning ball bearings, 12 series. Series differ in outside diameter and width even when the bore is the same.
- 16Bore
- Bore 80 mm (16 × 5).
- K/C3Suffix
- SKF suffix: identifies the variant, such as seals or shields, cage, internal clearance or other features.
1216 is the standard ISO basic designation, which sets the bearing type, series and bore.
Description
SKF 1216 K/C3 measures 80 mm across the bore and 140 mm across the outside diameter; its width is 26 mm (80 x 140 x 26 mm).
SKF 1216 K/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 1216 K/C3 and any equivalents.
SKF 12 K series self-aligning ball bearings have two rows of balls and handle radial and axial loads in both directions. Their defining trait is that they tolerate angular misalignment between shaft and housing, which helps when perfect alignment is not achievable. Typical uses include conveyors, fans, agricultural equipment and other industrial machinery.
The part number tells you a lot. Take 1215 K/C3: the 12 identifies the series, 15 corresponds to a 75 mm bore, K means a tapered bore (usually 1:12) for mounting on tapered shafts or adapter sleeves, and /C3 indicates radial internal clearance larger than normal, which suits high temperatures or interference fits. A /C4 suffix calls for even more clearance.
These bearings appear in many industries. In food processing, where cleanliness and corrosion resistance matter; in agriculture, on seeders and combine harvesters; in material handling such as belt conveyors; and in ventilation and extraction equipment. The self-aligning design is an advantage when shafts deflect or structures lack rigidity.
When selecting a 12 K series bearing, consider the radial and axial loads, the speed, and the operating environment. Sealing is important: if dust or moisture is present, choose variants with seals or extra protection. Match internal clearance to the fit and working temperature; C3 works for most tight-fit applications. During mounting, start with correct alignment and use the right tools to avoid damaging the bearing. Follow the manufacturer's lubrication recommendation and check clearance after assembly.
For equivalents, SKF 12 K series bearings can be interchanged with other brands that share the same dimensional designation, such as FAG, NSK or NTN. Still, tolerances and internal clearance can differ, so verify equivalence tables and confirm the technical data match your application. Suffix meanings for tapered bore or clearance are not identical across all manufacturers.
If you need help choosing, send the complete part number to MR Industrial Accessories by WhatsApp or email. Our team replies promptly and can suggest equivalents and assist with selection.
Dimensions
80 x 140 x 26 mm (d x D x B): boundary dimensions for basic designation 1216, according to ISO 15.
- Bore
- 80mm
- Outside diameter (D)
- 140mm
- Width (B)
- 26mm
Same size, other brands
Other brands' pages with basic designation 1216: 80 x 140 x 26 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 1216 K/C3 bearing: what are its dimensions?
- SKF 1216 K/C3 measures 80 mm across the bore and 140 mm across the outside diameter; its width is 26 mm (80 x 140 x 26 mm). Those are the boundary dimensions standardized in ISO 15 for basic designation 1216.
- What does the K suffix mean in an SKF bearing?
- K indicates a tapered bore with a 1:12 taper. This allows mounting on tapered shafts or with adapter sleeves, which simplifies adjustment and disassembly.
- What is the difference between C3 and C4 clearance?
- C3 is greater than normal clearance, used for tight fits or elevated temperatures. C4 is larger still, for more demanding conditions. Select based on the manufacturer's guidance and your operating conditions.
- Can I replace an SKF bearing with one from another brand?
- Yes, if dimensions and technical characteristics match. Check internal clearance and tolerances, as they can vary between manufacturers. Contact us and we will advise you on a safe equivalent.