Cross-brand designation analysis
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“NNU4960” across 3 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 | SKFNNU 4960 B/SPW33300 × 420 × 118 mm | FAGNNU4960-S-K-M-SP300 × 420 × 118 mm | KOYONNU4960300 × 420 × 118 mm |
|---|---|---|---|
| Comparable specifications | |||
| Brand | SKF | FAG | KOYO |
| Designation | NNU 4960 B/SPW33 | NNU4960-S-K-M-SP | NNU4960 |
| Product family | Super-precision cylindrical roller bearings | — | Single-row / NNU / Cylindrical bore |
| Detailed type | Super-precision double row cylindrical roller bearing with lubrication feature | Cylindrical roller bearings | Cylindrical roller bearings |
| Series | — | NNU4960 | — |
| Bore diameterd | 300 mm | 300 mm | 300 mm |
| Outside diameterD | 420 mm | 420 mm | 420 mm |
| WidthB | 118 mm | 118 mm | 118 mm |
| Basic dynamic load ratingC | 1020 kN | 1040 kN | 1470 kN |
| Basic static load ratingC0 | 2360 kN | 2380 kN | 2720 kN |
| Fatigue load limitPu | 224 kN | 265 kN | 285 kN |
| Limiting speednG | — | — | 1100 r/min |
| Mass≈m | 52 kg | 50.9 kg | 51.9 kg |
| Precision class | — | SP — Tolerance class SP | — |
| Internal clearance | C1 | C1 (Group 1) — Internal clearance smaller than C2 | — |
| Sealing | Without | — | — |
| Cage | Machined metal | M — Brass Cage | — |
| Bearing material | Bearing steel | — | — |
| Lubricant | None | — | — |
| 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 | — | 3 mm | — |
| Minimum chamfer dimensionr1 min | — | 0.118 in | — |
| Raceway diameter inner ringF | — | 339 mm | — |
| Raceway diameter inner ringF | — | 13.346 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 | — | 6.3 mm | — |
| Axial displacements | — | 0.248 in | — |
| Engineering — Abutment dimensions | |||
| Abutment diameter shaftd a | min. 313 mm | — | — |
| Abutment diameter shaft (NNU design)d a | max. 335 mm | — | — |
| Abutment diameter shaft (NNU design; not for tapered bore)d b | min. 343 mm | — | — |
| Abutment diameter housingD a | max. 407 mm | — | — |
| Fillet radiusr a | max. 2.5 mm | — | — |
| Oil nozzle position (not for variants with TNHA cage)d n | 342 mm | — | — |
| Engineering — Calculation data | |||
| Attainable speed for grease lubrication | 1800.0 r/min | — | — |
| Attainable speed for oil-air lubrication | 2000.0 r/min | — | — |
| Reference grease quantityG ref | 420 cm³ | — | — |
| Static radial stiffness (guideline value) | 8050 N/µm | — | — |
| Engineering — Dimensions | |||
| Shoulder diameter outer ring (NNU design)D 1 | 379 mm | — | — |
| Raceway diameter inner ring (NNU design)F | 339 mm | — | — |
| Width annular lubrication groove at outer ringb | 16.7 mm | — | — |
| Diameter lubrication hole (outer ring)K | 3 mm | — | — |
| Chamfer dimension outer ringr 1,2 | min. 3 mm | — | — |
| Chamfer dimension inner ring (bearing with tapered bore)r 3,4 | min. 3 mm | — | — |
| Permissible axial displacement from the normal position of one bearing ring relative to the other (all)s | max. 5.5 mm | — | — |
| Engineering — Engineering specifications | |||
| Bore type | Cylindrical | — | — |
| Logistics | |||
| Product net weight | 52.0 kg | — | — |
| eClass code | 23-05-09-01 | — | — |
| UNSPSC code | 31171505 | — | — |
| Main Dimensions & Performance Data | |||
| Basic dynamic load rating, radialCr | — | 1,040,000 N | — |
| Basic dynamic load rating, radialCr | — | 233,812.95 lbf | — |
| Basic static load rating, radialC0r | — | 2,380,000 N | — |
| Basic static load rating, radialC0r | — | 535,071.942 lbf | — |
| Fatigue load limit, radialCur | — | 265,000 N | — |
| Fatigue load limit, radialCur | — | 59,577.338 lbf | — |
| Limiting speed for grease lubricationnG Grease | — | 1,740 1/min | — |
| Limiting speed for oil lubricationnG Oil | — | 2,040 1/min | — |
| Manufacturer Identity | |||
| Schaeffler Product Code | — | 374681 | — |
| Official Class Key | — | — | 040-020-020 |
| Base Type | — | NNU4960 | — |
| Gpsd Group | — | F07 | — |
| Product Line Id | — | 39 | — |
| SAP material number | — | 0167369820000 | — |
| Base product | — | 230509014C | — |
| Bearing X designation | — | NNU4960-S-K-M-SP | — |
| Mounting Manager ID | — | NNU4960-S-K-M-SP | — |
| Mounting dimensions | |||
| Diameter shaft shoulderda | — | 336 mm | — |
| Diameter shaft shoulderda | — | 13.228 in | — |
| Diameter shaft shoulder tolerance | — | h12 | — |
| Diameter of housing shoulderDa | — | 389 mm | — |
| Diameter of housing shoulderDa | — | 15.315 in | — |
| Diameter of housing shoulder tolerance | — | H12 | — |
| Maximum recess radiusra1 max | — | 2.5 mm | — |
| Maximum recess radiusra1 max | — | 0.098 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 | |||
| Official product category | Super-precision cylindrical roller bearings | — | — |
| Official taxonomy path | /products/super-precision-bearings/cylindrical-roller-bearings | — | — |
| Structure group ID | BC2_010 | — | — |
| Available from SKF | Yes | — | — |
| Remanufacturable | No | — | — |
| 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 | — |
| Properties | |||
| Bearing part | Complete bearing | — | — |
| Number of rows | 2 | — | — |
| Design | NNU | — | — |
| Number of flanges, outer ring | 3 | — | — |
| Number of flanges, inner ring | 0 | — | — |
| Loose flange | None | — | — |
| Radial internal clearance | C1 | — | — |
| Tolerance class | Class SP (SP) | — | — |
| Material, bearing | Bearing steel | — | — |
| Coating | Without | — | — |
| Relubrication feature | Annular groove and lubrication holes | — | — |
| Indicative carbon footprint for new product | 192.0 kg CO 2 e | — | — |
| Technical Data | |||
| d | — | — | 420 mm |
| B | — | — | 118 mm |
| Bore Diameter (D) | — | 300 mm | — |
| R(Min.) | — | — | 3 mm |
| Outside Diamater (D) | — | 420 mm | — |
| Fw | — | — | 339 mm |
| Total Width (B) | — | 118 mm | — |
| Ew | — | — | - mm |
| Basic Dynamic Load Rating, Radial (Cr) | — | 1,040,000 N | — |
| Basic Load Ratings : Cr | — | — | 1470 kN |
| Basic Static Load Rating, Radial (C0R) | — | 2,380,000 N | — |
| Basic Load Ratings : C0R | — | — | 2720 kN |
| Diameter Lubrication Hole (Ds) | — | 9.5 mm | — |
| Fatigue Load Limit : Cu | — | — | 285 kN |
| Raceway Diameter Inner Ring (F) | — | 339 mm | — |
| Limiting Speeds(Grease Lub.) | — | — | 1100 min-1 |
| Operating Temperature Min. (Tmin) | — | -30 °C | — |
| Limiting Speeds(Oil Lub.) | — | — | 1300 min-1 |
| Limiting Speed For Grease Lubrication (Ng Grea) | — | 1,740 1/min | — |
| Da(Min.) | — | — | - mm |
| Minimum Diameter Shaft Shoulder (Da) | — | 336 mm | — |
| Da(Max.) | — | — | 407 mm |
| Limiting Speed (Ng Oil) | — | 2,040 1/min | — |
| Db(Min.) | — | — | 343 mm |
| Operating Temperature Max. (Tmax) | — | 150 °C | — |
| Maximum Diameter Of Housing Shoulder (Da) | — | 389 mm | — |
| Ra(Max.) | — | — | 2.5 mm |
| Minimum Chamfer Dimension (R1 Min) | — | 3 mm | — |
| Mass(Refer.) | — | — | 51.9 kg |
| Width Of Lubricating Groove (Ns) | — | 17.7 mm | — |
| Axial Displacement (S) | — | 6.3 mm | — |
| Maximum Recess Radius (Ra1 Max) | — | 2.5 mm | — |
| Fatigue Load Limit, Radial (Cur) | — | 265,000 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.