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You entered NNU4988-S-K-M-SP. This table explores the base group NNU4988; it does not preserve or approve every requested suffix. Search your complete marking first →
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“NNU4988” across 2 loaded brands
At least two brands share the same bore, outside diameter and width. Use Custom Compare when you want to choose exact suffix variants yourself.
Technical comparison
Choose exact variants instead →Brand differences at a glance
| Parameter | FAGNNU4988-S-K-M-SP440 × 600 × 160 mm | KOYONNU4988440 × 600 × 160 mm |
|---|---|---|
| Comparable specifications | ||
| Brand | FAG | KOYO |
| Designation | NNU4988-S-K-M-SP | NNU4988 |
| Product family | — | Single-row / NNU / Cylindrical bore |
| Detailed type | Cylindrical roller bearings | Cylindrical roller bearings |
| Series | NNU4988 | — |
| Bore diameterd | 440 mm | 440 mm |
| Outside diameterD | 600 mm | 600 mm |
| WidthB | 160 mm | 160 mm |
| Basic dynamic load ratingC | 2040 kN | 2060 kN |
| Basic static load ratingC0 | 5200 kN | 5000 kN |
| Fatigue load limitPu | 530 kN | 477 kN |
| Limiting speednG | — | 660 r/min |
| Mass≈m | 128.54 kg | 133 kg |
| Precision class | SP — Tolerance class SP | — |
| Internal clearance | C1 (Group 1) — Internal clearance smaller than C2 | — |
| Cage | M — Brass Cage | — |
| Minimum operating temperatureTmin | -30 °C | — |
| Maximum operating temperatureTmax | 150 °C | — |
| Capabilities & suitability | ||
| Radial load capacity | Yes | — |
| Suitable for grease lubrication | Yes | — |
| Suitable for oil lubrication | Yes | — |
| Unsealed design | Yes | — |
| Largebearing | Yes | — |
| Classification | ||
| Official Category Path | — | Cylindrical roller bearings - Single-row - NNU - Cylindrical bore |
| Official Classification 1 | — | Cylindrical roller bearings / Single-row / NNU / Cylindrical bore |
| Dimensions | ||
| Minimum chamfer dimensionr1 min | 4 mm | — |
| Minimum chamfer dimensionr1 min | 0.157 in | — |
| Raceway diameter inner ringF | 490 mm | — |
| Raceway diameter inner ringF | 19.291 in | — |
| Width of lubricating groovens | 17.7 mm | — |
| Width of lubricating groovens | 0.697 in | — |
| Diameter lubrication holeds | 9.5 mm | — |
| Diameter lubrication holeds | 0.374 in | — |
| Axial displacements | 6.8 mm | — |
| Axial displacements | 0.268 in | — |
| Main Dimensions & Performance Data | ||
| Basic dynamic load rating, radialCr | 2,040,000 N | — |
| Basic dynamic load rating, radialCr | 458,633.094 lbf | — |
| Basic static load rating, radialC0r | 5,200,000 N | — |
| Basic static load rating, radialC0r | 1,169,064.748 lbf | — |
| Fatigue load limit, radialCur | 530,000 N | — |
| Fatigue load limit, radialCur | 119,154.676 lbf | — |
| Limiting speed for grease lubricationnG Grease | 1,150 1/min | — |
| Limiting speed for oil lubricationnG Oil | 1,360 1/min | — |
| Manufacturer Identity | ||
| Schaeffler Product Code | 374713 | — |
| Official Class Key | — | 040-020-020 |
| Base Type | NNU4988 | — |
| Gpsd Group | F07 | — |
| Product Line Id | 39 | — |
| SAP material number | 0192342360000 | — |
| Base product | 230509014C | — |
| Bearing X designation | NNU4988-S-K-M-SP | — |
| Mounting Manager ID | NNU4988-S-K-M-SP | — |
| Mounting dimensions | ||
| Diameter shaft shoulderda | 486.8 mm | — |
| Diameter shaft shoulderda | 19.165 in | — |
| Diameter shaft shoulder tolerance | h12 | — |
| Diameter of housing shoulderDa | 558 mm | — |
| Diameter of housing shoulderDa | 21.969 in | — |
| Diameter of housing shoulder tolerance | H12 | — |
| Maximum recess radiusra1 max | 3 mm | — |
| Maximum recess radiusra1 max | 0.118 in | — |
| Product characteristics | ||
| Tolerance classSP | Tolerance class SP | — |
| Bore typeK | Tapered, taper 1:12 | — |
| Locating Feature , bearing outer ringS | Lubrication holes and lubrication groove in outer ring | — |
| Radial internal clearanceC1 (Group 1) | Internal clearance smaller than C2 | — |
| Number of rows2 | Double-row design | — |
| Product Identity | ||
| Construction | Super precision cylindrical roller bearings NNU49..-S-K-M-SP, non-locating bearing, double row, with tapered bore, taper 1:12, separable, with cage | — |
| Short Description | Cylindrical roller bearing | — |
| Technical Data | ||
| d | — | 600 mm |
| B | — | 160 mm |
| Bore Diameter (D) | 440 mm | — |
| R(Min.) | — | 4 mm |
| Outside Diamater (D) | 600 mm | — |
| Fw | — | 487 mm |
| Total Width (B) | 160 mm | — |
| Ew | — | - mm |
| Basic Dynamic Load Rating, Radial (Cr) | 2,040,000 N | — |
| Basic Load Ratings : Cr | — | 2060 kN |
| Basic Static Load Rating, Radial (C0R) | 5,200,000 N | — |
| Basic Load Ratings : C0R | — | 5000 kN |
| Diameter Lubrication Hole (Ds) | 9.5 mm | — |
| Fatigue Load Limit : Cu | — | 477 kN |
| Raceway Diameter Inner Ring (F) | 490 mm | — |
| Limiting Speeds(Grease Lub.) | — | 660 min-1 |
| Operating Temperature Min. (Tmin) | -30 °C | — |
| Limiting Speeds(Oil Lub.) | — | 800 min-1 |
| Limiting Speed For Grease Lubrication (Ng Grea) | 1,150 1/min | — |
| Da(Min.) | — | - mm |
| Minimum Diameter Shaft Shoulder (Da) | 486.8 mm | — |
| Da(Max.) | — | 584 mm |
| Limiting Speed (Ng Oil) | 1,360 1/min | — |
| Db(Min.) | — | 492 mm |
| Operating Temperature Max. (Tmax) | 150 °C | — |
| Maximum Diameter Of Housing Shoulder (Da) | 558 mm | — |
| Ra(Max.) | — | 3 mm |
| Minimum Chamfer Dimension (R1 Min) | 4 mm | — |
| Mass(Refer.) | — | 133 kg |
| Width Of Lubricating Groove (Ns) | 17.7 mm | — |
| Axial Displacement (S) | 6.8 mm | — |
| Maximum Recess Radius (Ra1 Max) | 3 mm | — |
| Fatigue Load Limit, Radial (Cur) | 530,000 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 | — |
Automatic matching is a search aid, not an interchangeability declaration. Confirm the full suffix, tolerances, internal design and application limits before substitution.