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1307-E-TN9-C3 | SKF
1307-E-TN9-C3 from SKF
Important names for ball bearings and accessories
- E stands for optimized internal construction for higher load-bearing capacity of the 213, 222 and 223 series: two window cages made of sheet steel, a rimless inner ring and a loose guide ring. Circumferential groove and three lubrication holes in the outer ring, d = 65 mm: guide ring centered on the inner ring, d> 65 mm: guide ring centered on the cages.
- The suffix TN9 denotes a glass fiber reinforced snap cage made of polyamide, which is ball-guided. This cage is often the standard.
- C3 describes that the radial internal clearance is larger than normal, many types are available in the C3 variant.
Further technical information on additional symbols for rolling bearings and accessories can be found here: Product codes
| Product features | |
| Inside diameter (mm) | 35 |
|---|---|
| Outside diameter (mm) | 80 |
| Width (mm) | 21 |
| Product weight (kg) | 0.5 |
| Typ | Self-aligning ball bearings |
| Producer | SKF |
| Bearing number/code | 1307-E-TN9-C3 |
| Country | IT |
| Minimum order (piece) | 1 |
| EAN | 7316576635571 |
Self-aligning ball bearings
Self-aligning ball bearings are double-row, self-retaining units consisting of outer rings with a concave raceway, inner rings with a cylindrical or tapered bore and ball and cage assemblies. Self-aligning ball bearings are open and sealed. Self-aligning ball bearings are available in different versions. In addition to the radial forces, self-aligning ball bearings also absorb axial forces in both directions. Self-aligning ball bearings in the 12, 13, 22 and 23 series are available with a cylindrical or tapered bore. Bearings with a tapered bore have a bore taper of 1:12 and the suffix K. Self-aligning ball bearings with a tapered bore are also supplied with an adapter sleeve, slotted nut and lock washer. The clamping sleeves must be ordered in addition to the bearing. Bearings in the 112 series have a wide inner ring, a locating groove on one side of the inner ring and are located with dowel pins. These bearings are for simple bearings with standard shafts. Due to the tolerance of the bearing bore (J7), they are very easy to assemble. Ball bearings in the 12, 13, 22 and 23 series are also available in the sealed version. Sealed bearings have a rubbing seal on both sides and the suffix 2RS. Sealed bearings are greased with a high-quality grease and are maintenance-free. Under normal operating conditions and with the inner ring rotating, self-aligning ball bearings can be swiveled around 4° from the central position. Sealed bearings, on the other hand, have a maximum of 1.5°. As a result, they allow misalignments between the outer and inner ring and thus compensate for misalignments, shaft deflections and housing deformations. With a rotating outer ring or wobbling inner ring, the angular adjustability is less. Open bearings with brass cages can be used at operating temperatures from -30°C to +150°C. Ball bearings with cages made of glass fiber reinforced polyamide are suitable for operating temperatures of just +120°C! Limited by the lubricating grease and the sealing material, sealed self-aligning ball bearings are only suitable for operating temperatures from -30°C to +100°C.