Self-aligning ball bearings have two structures: cylindrical bore and tapered bore, and the cage is made of steel plate, synthetic resin, etc. Its characteristic is that the outer ring raceway is spherical, with self-alignment, which can compensate the errors caused by misalignment and shaft deflection, but the relative inclination of the inner and outer rings should not exceed 3 degrees.
| select | Inquiry | Bearing Designation | Dimension（mm） | Basic load ratings (kN) | Speed ratings(rpm) | Weight | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| d | D | B | rs min | Cr | Cor | Grease | Oil | (Kg) | |||
| 1217 | 85 | 150 | 28 | 2 | 49 | 20.8 | 3500 | 4100 | 2.06 | ||
| 1218K | 90 | 160 | 30 | 2 | 57 | 23.5 | 3300 | 3800 | 2.47 | ||
| 1218 | 90 | 160 | 30 | 2 | 57 | 23.5 | 3300 | 3800 | 2.51 | ||
| 1219K | 95 | 170 | 32 | 2.1 | 64 | 27.1 | 3100 | 3600 | 3.05 | ||
| 1219 | 95 | 170 | 32 | 2.1 | 64 | 27.1 | 3100 | 3600 | 3.1 | ||
| 1220K | 100 | 180 | 34 | 2.1 | 69 | 29.7 | 2900 | 3400 | 3.64 | ||
| 1220 | 100 | 180 | 34 | 2.1 | 69 | 29.7 | 2900 | 3400 | 3.7 | ||
| 1221 | 105 | 190 | 36 | 2.1 | 74.5 | 32.5 | 2800 | 3300 | 4.34 | ||
| 1222K | 110 | 200 | 38 | 2.1 | 80.5 | 35.5 | 2600 | 3100 | 5.07 | ||
| 1222 | 110 | 200 | 38 | 2.1 | 80.5 | 35.5 | 2600 | 3100 | 5.15 | ||
