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| Parameter | FAGNNU4188-M440 × 720 × 280 mm | INANNU4188-S--M-C3440 × 720 × 280 mm |
|---|---|---|
| Comparable specifications | ||
| Brand | FAG | INA |
| Designation | NNU4188-M | NNU4188-S--M-C3 |
| Detailed type | Cylindrical roller bearings | Cylindrical roller bearings |
| Series | NNU4188 | NNU4188 |
| Bore diameterd | 440 mm | 440 mm |
| Outside diameterD | 720 mm | 720 mm |
| WidthB | 280 mm | 280 mm |
| Basic dynamic load ratingC | 5600 kN | 5600 kN |
| Basic static load ratingC0 | 11500 kN | 11500 kN |
| Fatigue load limitPu | 1030 kN | 1030 kN |
| Mass≈m | 454.5 kg | 450 kg |
| Precision class | PN — Normal (ISO 492:2023) | — |
| Internal clearance | CN (Group N) — Normal internal clearance | — |
| Cage | M — Brass Cage | — |
| Minimum operating temperatureTmin | -30 °C | -30 °C |
| Maximum operating temperatureTmax | 150 °C | 150 °C |
| Capabilities & suitability | ||
| Largebearing | Yes | — |
| Dimensions | ||
| Minimum chamfer dimensionr1 min | 6 mm | — |
| Minimum chamfer dimensionr1 min | 0.236 in | — |
| Raceway diameter inner ringF | 511 mm | — |
| Raceway diameter inner ringF | 20.118 in | — |
| Axial displacements | 12.9 mm | — |
| Axial displacements | 0.508 in | — |
| Shoulder diameter outer ringD1 | 632 mm | — |
| Shoulder diameter outer ringD1 | 24.882 in | — |
| Main Dimensions & Performance Data | ||
| Basic dynamic load rating, radialCr | 5,600,000 N | — |
| Basic dynamic load rating, radialCr | 1,258,992.806 lbf | — |
| Basic static load rating, radialC0r | 11,500,000 N | — |
| Basic static load rating, radialC0r | 2,585,431.655 lbf | — |
| Fatigue load limit, radialCur | 1,030,000 N | — |
| Fatigue load limit, radialCur | 231,564.748 lbf | — |
| Limiting speed for grease lubricationnG Grease | 1,170 1/min | — |
| Limiting speed for oil lubricationnG Oil | 1,380 1/min | — |
| Manufacturer Identity | ||
| Schaeffler Product Code | 374590 | 2409985 |
| Base Type | NNU4188 | NNU4188 |
| Gpsd Group | F01 | F01 |
| Product Line Id | 75 | 75 |
| SAP material number | 0192323220000 | — |
| Base product | 2305090141 | — |
| Bearing X designation | NNU4188-M | — |
| Mounting Manager ID | NNU4188-M | — |
| Grease application ID | NNU4188-M | — |
| Mounting dimensions | ||
| Diameter shaft shoulderda | 466 mm | — |
| Diameter shaft shoulderda | 18.346 in | — |
| Diameter of housing shoulderDa | 694 mm | — |
| Diameter of housing shoulderDa | 27.323 in | — |
| Maximum recess radiusra1 max | 5 mm | — |
| Maximum recess radiusra1 max | 0.197 in | — |
| Product characteristics | ||
| Tolerance classPN | Normal (ISO 492:2023) | — |
| Radial internal clearanceCN (Group N) | Normal internal clearance | — |
| Number of rows2 | Double-row design | — |
| Product Identity | ||
| Short Description | Cylindrical roller bearing | Cylindrical roller bearing |
| Technical Data | ||
| Bore Diameter (D) | 440 mm | 440 mm |
| Outside Diamater (D) | 720 mm | 720 mm |
| Total Width (B) | 280 mm | 280 mm |
| Basic Dynamic Load Rating, Radial (Cr) | 5,600,000 N | 5,600,000 N |
| Basic Static Load Rating, Radial (C0R) | 11,500,000 N | 11,500,000 N |
| Raceway Diameter Inner Ring (F) | 511 mm | 511 mm |
| Operating Temperature Min. (Tmin) | -30 °C | -30 °C |
| Limiting Speed For Grease Lubrication (Ng Grea) | 1,170 1/min | 1,170 1/min |
| Minimum Diameter Shaft Shoulder (Da) | 466 mm | 466 mm |
| Limiting Speed (Ng Oil) | 1,380 1/min | 1,380 1/min |
| Operating Temperature Max. (Tmax) | 150 °C | 150 °C |
| Maximum Diameter Of Housing Shoulder (Da) | 694 mm | 694 mm |
| Minimum Chamfer Dimension (R1 Min) | 6 mm | 6 mm |
| Shoulder Diameter Outer Ring (D1) | 632 mm | 632 mm |
| Axial Displacement (S) | 12.9 mm | 12.9 mm |
| Maximum Recess Radius (Ra1 Max) | 5 mm | 5 mm |
| Fatigue Load Limit, Radial (Cur) | 1,030,000 N | 1,030,000 N |
| Temperature range | ||
| Operating temperature min.Tmin | -30 °C | — |
| Operating temperature min.Tmin | -22 °F | — |
| Operating temperature max.Tmax | 150 °C | — |
| Operating temperature max.Tmax | 302 °F | — |
Independent reference comparison based on the manufacturer data currently loaded. Always verify current limits, tolerances and suffix definitions with the official source before engineering selection.