22318-E1A-M bearings have the advantages of Self-aligning, extremely strong load-bearing capacity, and impact resistant, and are therefore widely used in the Heavy-duty speed reducers, low-speed rolling mills, and medium-sized mining equipment.

| Part Number | 22318-E1A-M |
| Design Type | E1A = without central rip |
| Bore Type | Z = Cylindrical bore |
| RIC | CN |
| X-Life | XL long life design |
| Row | 2 |
| Bearing Type | Double row spherical roller bearings, symmetric 2 outer ribs |
| Manufacturer Part Code | 22318-E1A-M |
| Equivalent | 22318-E1A-M , 22318E1A.M |
| Original Code | 22318-E1A-M |
| Cage | M = Solid brass cage, guided by rollers |
| Measurement | Metric |
| Seal type | OPEN |
| Relubrication | Standard |
| d φ Inside [inch] | 3.543 |
| D Φ Outside [inch] | 7.480 |
| B Width [inch] | 2.520 |
| nB Reference speed (grease) [min–1] | 2971 |
| nG Limiting speed (oil) [min–1] | 3826 |
| Weight [kg] | 8.501 |
| r(min.) Chamfer [inch] | 0.118 |
| D1 [inch] | 6.398 |
| d2 [inch] | 4.339 |
| ds [inch] | 0.248 |
| ns [inch] | 0.480 |
| Cr Radial Dynamic [lbf] | 137091 |
| C0r Radial static [lbf] | 141582 |
| Cur Radial Fatigue [lbf] | 12570 |
| Temperature - T(min)[°C] | -30 |
| Temperature - T(max)[°C] | +200 |
| Mounting dimensions | |
| da(min.) [inch] | 4.094 |
| Da(max.) [inch] | 6.929 |
| ra(max.) [mm] | 8.501 |
| Calculation coefficient | |
| e | 0.33 |
| Y0 | 1.98 |
| Y1 | 2.03 |
| Y2 | 3.02 |
The 22318-E1A-M Double-row spherical roller bearings mainly consist of an inner ring, an outer ring, two rows of spherical rollers, a cage, and seals. The outer ring raceway has a spherical structure, while the inner ring has a double-row raceway. The rollers and raceways are logarithmically curved. The cage is typically made of stamped steel or machined brass.
Double-row spherical roller bearings possess excellent self-aligning properties, compensating for shaft deflection, installation errors, and misalignment. They can simultaneously withstand radial loads and bidirectional axial loads, exhibiting extremely high load-bearing capacity and strong impact resistance. Furthermore, the internal clearance can be optimized for vibration conditions, effectively reducing frictional temperature rise.















