Radial spherical plain bearing, requiring maintenance, steel/steel sliding contact surface, metric sizes, DIN ISO 12240-1, dimension series E
Radial spherical plain bearings are designed to accommodate radial and combined radial and axial loads, and also misalignment. The bearing can be relubricated via lubrication holes and an annular groove in both rings.
| Requiring maintenance | Maintenance | |
| Steel/Steel | Sliding contact surface | |
| Without | Sealing | |
| Bearing steel | Material, inner ring | |
| Bearing steel | Material, outer ring |
| d | 220 mm | Bore diameter |
| D | 320 mm | Outside diameter |
| B | 135 mm | Width inner ring |
| C | 100 mm | Width outer ring |
| dk | 275 mm | Ball diameter |
| a | 8 ° | Tilt angle |
| r1 | 1.1 mm | Chamfer dimension |
| r2 | 1.1 mm | Chamfer dimension |
| Cr | 2320 kN | Basic dynamic load rating, radial |
| C0r | 11600 kN | Basic static load rating, radial |
| ≈m | 35.51 kg | Weight |
| da min | 232.5 mm | Connection measure inner ring, min. |
| da max | 239.5 mm | Connection measure inner ring, max. |
| Da min | 267 mm | Housing connection diameter, min. |
| Da max | 309.5 mm | Housing Shoulder diameter, max. |
| ra min | 1 mm | Fillet radius shaft, min |
| rb max | 1 mm | Fillet radius housing, max. |
| Min. | 0.110 mm | Radial clearance |
| Max. | 0.214 mm | Radial clearance |
| dUT | -0.030 mm | Bore diameter,lower tolerance |
| DUT | -0.040 mm | Outside diameter,lower tolerance |
| BUT | -0.30 mm | Inner ring width,lower tolerance |
| CUT | -0.80 mm | Outer ring width, lower tolerance |
| Tmin | -50 °C | Operating temperature min. |
| Tmax | 150 °C | Operating temperature max. |
| RBC | TORRINGTON | IKO | NTN | LS |
| MB220-9L | 220FS320 | GE220ES | SA1-220 | GE220ES |
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