22318 EKJA/VA405 Spherical Roller Bearings, Stamped Steel Cage, Tapered Bore, Taper 1:12
The 22318 EKJA/VA405 Spherical roller bearings are suitable for harsh working conditions with high humidity, dust, and strong vibration and impact. Classic applications include vibrating screen exciters, crushers, vibrating motors, vibrating rollers, mining vibrating machinery, and saw frames, among other vibrating equipment.
The 22318 EKJA/VA405 bearing is a Spherical roller bearings for vibratory applications with an inner diameter of 90 mm , an outer diameter of 190 mm, a width of 64 mm. High-carbon chromium steel rings, High-carbon chromium steel rolling mlement. Its dynamic radial rated load is approximately 631930 N, its static radial rated load is approximately 689763 N. It uses Normal standard radial clearance, open type, together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.
22318 EKJA/VA405 bearings ( 90 mm x 190 mm x 64 mm) have the advantages of Vibration resistant, impact resistant, high temperature resistant, self-aligning, and are therefore widely used in the Heavy-duty vibrating screens for mining, metallurgy, construction, and coal industries..
| Part Number | 22318 EKJA/VA405 |
| Manufacturer Part Code | 22318EKJA/VA405 |
| Internal design | EJA = Flangeless inner ring, guide ring centred on the outer ring raceway, two stamped steel cages |
| Bearing Type | Spherical roller bearings for vibratory applications |
| Application | Shaker screen |
| m Weight [lb] | 19.952 |
| Seal type | open |
| Series | 223..-EKJA/VA405 |
| Cage | JA = Stamped steel cage, outer ring centred |
| Bore Type | K = Tapered bore, taper 1:12 |
| Radial internal clearance | Normal |
| Units | Metric |
| Other variants | VA405 = Bearing for vibratory applications, surface-hardened stamped steel cages |
| Acceleration for oil lubrication(rotational) | 68 g |
| Acceleration for oil lubrication(linear) | 21 g |
| Cr Dynamic Radial [lbf] | 142057 |
| C0r Static Radial [lbf] | 155058 |
| Pu Fatigue Radial [lbf] | 13913 |
| Operating temperature - T(min) [°C] | -30 |
| Operating temperature - T(max) [°C] | +200 |
| nB Speed ratings (grease) [rpm] | 2551 |
| nG Speed ratings (oil) [rpm] | 3581 |
| Heat stabilization | 392 °F (200 °C) |
| Dimension | |
| d φ Inside [inch] | 3.543 |
| D Φ Outside [inch] | 7.480 |
| B Width [inch] | 2.520 |
| b [inch] | 0.437 |
| K [inch] | 0.236 |
| d2 [inch] | 4.449 |
| D1 [inch] | 6.339 |
| ra(max.) Fillet [inch] | 0.098 |
| r1,r2(min.) Fillet [inch] | 0.118 |
| Angular misalignment | 2 degrees |
| Abutment dimensions | |
| da(min.) [inch] | 4.094 |
| Da(max.) [inch] | 6.929 |
| Calculation factor | |
| e | 0.33 |
| Y1 | 2 |
| Y2 | 3 |
| Y0 | 2 |
The 22318 EKJA/VA405 Spherical roller bearings mainly consist of an inner ring, an outer ring, two rows of drum-shaped rollers, and a cage. The outer ring raceway has a spherical structure, while the inner ring has a double-row raceway. The cage is typically a machined brass or stamped steel solid structure guided by the outer ring to adapt to high-frequency vibration conditions.
Spherical roller bearings possess self-aligning properties, compensating for shaft deflection and installation misalignment. They can simultaneously withstand radial and bidirectional axial loads, exhibiting high load-bearing capacity and strong impact resistance. Furthermore, their internal clearance and cage guidance method are optimized for vibration conditions, effectively reducing frictional temperature rise.
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