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Self-aligning ball bearings are double row, self-retaining units comprising outer rings with a concave raceway, inner rings with a cylindrical or tapered bore and ball and cage assemblies. The bearings are available in open and sealed designs.
Parameters of SKF bearing 2308ETN9/C3
| Item | 2308 ETN9/c3 | Self-aligning ball bearings |
| d | 40 mm | Inner ring |
| D | 90 mm | Outer ring |
| B | 93 mm | Width |
| m | 0.93 kg | Mass |
| Cr | 54000 N | Basic dynamic load rating, radial |
| C0r | 16000 N | Basic static load rating, radial |
| nG | 14000 1/min | Limiting speed |
| nB | 10000 1/min | Reference speed |
| Cur | 820 N | Fatigue limit load, radial |
Self-aligning ball bearings can support axial forces in both directions as well as radial forces.
Bearings of series 12, 13, 22 and 23 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 of series 12, 13, 22 and 23 are also available in sealed designs. Sealed bearings have contact seals on both sides and the suffix 2RS.
| d | D | B | d | D | B | ||
| mm | mm | mm | mm | mm | mm | ||
| 2302-TN9 | 15 | 42 | 17 | 2302-2RS-TN9 | 15 | 42 | 17 |
| 2303-TN9 | 17 | 47 | 19 | 2303-2RS-TN9 | 17 | 47 | 19 |
| 2304-TN9 | 20 | 52 | 21 | 2304-2RS-TN9 | 20 | 52 | 21 |
| 2305-TN9 | 25 | 62 | 24 | 2305-2RS-TN9 | 25 | 62 | 24 |
| 2306-TN9 | 30 | 72 | 27 | 2306-2RS-TN9 | 30 | 72 | 27 |
| 2307-TN9 | 35 | 80 | 31 | 2307-2RS-TN9 | 35 | 80 | 31 |
| 2308-TN9 | 40 | 90 | 33 | 2308-2RS-TN9 | 40 | 90 | 33 |
| 2309-TN9 | 45 | 100 | 36 | 2309-2RS-TN9 | 45 | 100 | 36 |
| 2310-TN9 | 50 | 110 | 40 | 2310-2RS-TN9 | 50 | 110 | 40 |
| 2311-TN9 | 55 | 120 | 43 | 2311-2RS-TN9 | 55 | 120 | 43 |
| 2312-TN9 | 60 | 130 | 46 | 2312-2RS-TN9 | 60 | 130 | 46 |
| 2313-TN9 | 65 | 140 | 48 | 2305-K-TN9-C3 | 25 | 62 | 24 |
| 2314-M | 70 | 150 | 51 | 2306-K-TN9-C3 | 30 | 72 | 27 |
| 2315-M | 75 | 160 | 55 | 2307-K-TN9-C3 | 35 | 80 | 31 |
| 2316-M | 80 | 170 | 58 | 2308-K-TN9-C3 | 40 | 90 | 33 |
| 2317-M | 85 | 180 | 60 | 2309-K-TN9-C3 | 45 | 100 | 36 |
| 2318-M | 90 | 190 | 64 | 2311-K-TN9-C3 | 55 | 120 | 43 |
| 2319-M | 95 | 200 | 67 | 2312-K-TN9-C3 | 60 | 130 | 46 |
| 2320-M | 100 | 215 | 73 | 2313-K-TN9-C3 | 65 | 140 | 48 |
| 2322-M | 110 | 240 | 80 | 2315-K-M-C3 | 75 | 160 | 55 |
Self-aligning ball bearings are double row, self-retaining units comprising outer rings with a concave raceway, inner rings with a cylindrical or tapered bore and ball and cage assemblies. The bearings are available in open and sealed designs.
Parameters of SKF bearing 2308ETN9/C3
| Item | 2308 ETN9/c3 | Self-aligning ball bearings |
| d | 40 mm | Inner ring |
| D | 90 mm | Outer ring |
| B | 93 mm | Width |
| m | 0.93 kg | Mass |
| Cr | 54000 N | Basic dynamic load rating, radial |
| C0r | 16000 N | Basic static load rating, radial |
| nG | 14000 1/min | Limiting speed |
| nB | 10000 1/min | Reference speed |
| Cur | 820 N | Fatigue limit load, radial |
Self-aligning ball bearings can support axial forces in both directions as well as radial forces.
Bearings of series 12, 13, 22 and 23 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 of series 12, 13, 22 and 23 are also available in sealed designs. Sealed bearings have contact seals on both sides and the suffix 2RS.
| d | D | B | d | D | B | ||
| mm | mm | mm | mm | mm | mm | ||
| 2302-TN9 | 15 | 42 | 17 | 2302-2RS-TN9 | 15 | 42 | 17 |
| 2303-TN9 | 17 | 47 | 19 | 2303-2RS-TN9 | 17 | 47 | 19 |
| 2304-TN9 | 20 | 52 | 21 | 2304-2RS-TN9 | 20 | 52 | 21 |
| 2305-TN9 | 25 | 62 | 24 | 2305-2RS-TN9 | 25 | 62 | 24 |
| 2306-TN9 | 30 | 72 | 27 | 2306-2RS-TN9 | 30 | 72 | 27 |
| 2307-TN9 | 35 | 80 | 31 | 2307-2RS-TN9 | 35 | 80 | 31 |
| 2308-TN9 | 40 | 90 | 33 | 2308-2RS-TN9 | 40 | 90 | 33 |
| 2309-TN9 | 45 | 100 | 36 | 2309-2RS-TN9 | 45 | 100 | 36 |
| 2310-TN9 | 50 | 110 | 40 | 2310-2RS-TN9 | 50 | 110 | 40 |
| 2311-TN9 | 55 | 120 | 43 | 2311-2RS-TN9 | 55 | 120 | 43 |
| 2312-TN9 | 60 | 130 | 46 | 2312-2RS-TN9 | 60 | 130 | 46 |
| 2313-TN9 | 65 | 140 | 48 | 2305-K-TN9-C3 | 25 | 62 | 24 |
| 2314-M | 70 | 150 | 51 | 2306-K-TN9-C3 | 30 | 72 | 27 |
| 2315-M | 75 | 160 | 55 | 2307-K-TN9-C3 | 35 | 80 | 31 |
| 2316-M | 80 | 170 | 58 | 2308-K-TN9-C3 | 40 | 90 | 33 |
| 2317-M | 85 | 180 | 60 | 2309-K-TN9-C3 | 45 | 100 | 36 |
| 2318-M | 90 | 190 | 64 | 2311-K-TN9-C3 | 55 | 120 | 43 |
| 2319-M | 95 | 200 | 67 | 2312-K-TN9-C3 | 60 | 130 | 46 |
| 2320-M | 100 | 215 | 73 | 2313-K-TN9-C3 | 65 | 140 | 48 |
| 2322-M | 110 | 240 | 80 | 2315-K-M-C3 | 75 | 160 | 55 |