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Deep Groove Ball Bearings: The Industry Default and When to Reach for Something Else
If you pulled a bearing off general industrial equipment at random, there’s a good chance
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Double-row spherical roller bearing, 90 x 160 x 40 mm, 1:12 tapered bore, machined brass cage, C3 clearance, W33 lubrication groove, 345 kN dynamic.
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| MFR / Brand | FAG |
|---|---|
| MPN | 22218EASKMW33 |
| Model | 22218 E AS K M W33 / 22218 MB |
| Bearing Type | Spherical Roller Bearing, Open |
| ID | 90 mm |
| OD | 160 mm |
| Width | 40 mm |
| Material | Bearing Steel |
|---|---|
| Series | 22200 |
| Base Number | 22218 |
| Industry Terms | Spherical roller bearing; tapered bore bearing; adapter sleeve bearing; brass cage bearing; self-aligning roller bearing; double row spherical roller; X-life bearing; C3 clearance bearing |
| Common Misspellings | 22218 EASKMW33; 22218EAS KM W33; 22218EASK M W 33; FAG 22218 EASK; 22218EASKMW3 |
| Application Types | Crushers and vibrating screens; conveyor pulleys and head shafts; fans and blowers; mill shafts; gearbox output shafts; high-shock and high-temperature positions suited to a machined brass cage |
| Bore Shaft Size | 90 mm tapered bore, 1:12 taper |
| Locking Method | Adapter sleeve with nut and lockwasher, or a machined tapered shaft seat |
| Mpn Variants | 22218EASKMW33; 22218-EAS-K-M-W33; 22218 EAS K M W33; 22218KMW33; 22218KM; 22218K; 22218 |
| Manufacturer Status | FAG is part of Schaeffler; current designations in this size are 22218-E1-XL-K-C3 (steel cage) and 22218-E1A-XL-K-M-C3 (machined brass cage) |
| Cage Type | M, machined, outer-ring centred |
| Dynamic Load Rating | 345,000 N |
| Static Load Rating | 375,000 N |
| Rolling Elements | Spherical rollers |
| Number Of Rows | Two (double row) |
| Bore Type | Tapered 1:12 |
| Limiting Speed | 4,800 rpm |
| Internal Clearance | C3 |
| Harmonization Code | 8482.30.00.80 |
| Part Number | 22218EASKMW33 (as marked); FAG-published designation 22218-E1A-XL-K-M-C3 |
| Cross Reference 1 | SKF 22218 EK/C3 |
|---|---|
| Cross Reference 2 | NSK 22218EAKE4C3 |
| Cross Reference 3 | NTN 22218EAKD1 |
| Cross Reference 4 | Timken 22218EKJW33 |
FAG 22218 double-row spherical roller bearing, 90 x 160 x 40 mm, 1:12 tapered bore, machined brass cage, C3 internal clearance, annular lubrication groove with feed holes in the outer ring (W33). One bearing. The FAG-published designation for this execution is 22218-E1A-XL-K-M-C3.
222 / 18 — double-row spherical roller bearing, 22 dimension series, 90 mm bore.
E1 — FAG’s optimised high-capacity internal design.
E1A — the same design executed with a machined brass cage.
XL — Schaeffler X-life quality grade.
K — tapered bore, 1:12.
M — machined brass cage, outer-ring centred.
C3 — radial internal clearance greater than normal.
W33 — annular lubrication groove with feed holes in the outer ring.
Bearing Type: Double-row spherical roller bearing. Bore Diameter: 90 mm. Outside Diameter: 160 mm. Overall Width: 40 mm. Bore Type: Tapered 1:12. Cage Material: Machined brass. Cage Type: M, machined, outer-ring centred. Internal Clearance: C3. Closure Type: Open. Number Of Rows: Two. Precision Rating: Normal. Series: 222, 22 dimension series. Base Number: 22218. Design Units: Metric. Rolling Elements: Spherical barrel rollers. Bearing Material: Bearing steel. Dynamic Load Rating: 345 kN. Static Load Rating: 375 kN. Fatigue Limit Load Cu: 42.5 kN. Reference Speed: 3,400 rpm. Limiting Speed: 4,800 rpm with the machined brass cage. Item Weight: 3.20 kg (7.05 lb). Calculation Factors: e 0.23, Y1 2.9, Y2 4.31, Y0 2.83. Max Temp: 200 °C. Min Temp: -30 °C. Lubricant: grease or oil. Unit Quantity: 1 Pc. Harmonization Code: 8482.30.00.80.
Bore Diameter: 90 mm, tapered 1:12. Locking Method: adapter sleeve with nut and lockwasher, or a machined tapered shaft seat. The W33 annular groove and its feed holes carry lubricant from the housing feed port directly to the rollers.
Tapered-bore 22218 equivalents: SKF 22218 EK/C3, NSK 22218EAKE4C3, NTN 22218EAKD1 and Timken 22218EKJW33. Internal design codes are maker-specific: FAG E1-XL and E1A-XL, SKF E, NSK EA and NTN EA each denote that maker’s own roller complement, cage material and ratings. The straight-bore 22218 shares the envelope and the ratings.
Bore Diameter: 90 mm. Outside Diameter: 160 mm. Overall Width: 40 mm. Bore Type: Tapered 1:12.
Dynamic Load Rating: 345 kN. Static Load Rating: 375 kN. Limiting Speed: 4,800 rpm with the machined brass cage.
E1A is FAG’s high-capacity design with a machined brass cage, K is a 1:12 tapered bore, M is the machined brass cage and W33 is the annular lubrication groove with feed holes in the outer ring.
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