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) | |||
| 2217 | 85 | 150 | 36 | 2 | 58 | 23.6 | 3200 | 3800 | 2.54 | ||
| 2218K | 90 | 160 | 40 | 2 | 70 | 28.7 | 3100 | 3600 | 3.12 | ||
| 2218 | 90 | 160 | 40 | 2 | 70 | 28.7 | 3100 | 3600 | 3.19 | ||
| 2219K | 95 | 170 | 43 | 2.1 | 83.5 | 34.5 | 2900 | 3400 | 3.8 | ||
| 2219 | 95 | 170 | 43 | 2.1 | 83.5 | 34.5 | 2900 | 3400 | 3.89 | ||
| 2220K | 100 | 180 | 46 | 2.1 | 94 | 38.5 | 2700 | 3200 | 4.54 | ||
| 2220 | 100 | 180 | 46 | 2.1 | 94 | 38.5 | 2700 | 3200 | 4.65 | ||
| 2221 | 105 | 190 | 50 | 2.1 | 109 | 45 | 2600 | 3100 | 6.07 | ||
| 2222K | 110 | 200 | 53 | 2.1 | 124 | 51.5 | 2500 | 2900 | 6.94 | ||
| 2222 | 110 | 200 | 53 | 2.1 | 124 | 51.5 | 2500 | 2900 | 7.1 | ||
