Cross-brand designation analysis
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Explore products that share a base designation across loaded brands, with dimensional agreement and data gaps shown clearly.
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Dimensions verified
“NN3044” 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 | SKFNN 3044 K/SPW33220 × 340 × 90 mm | FAGNN3044-AS-K-M-SP220 × 340 × 90 mm | KOYONN3044220 × 340 × 90 mm |
|---|---|---|---|
| Comparable specifications | |||
| Brand | SKF | FAG | KOYO |
| Designation | NN 3044 K/SPW33 | NN3044-AS-K-M-SP | NN3044 |
| Product family | Super-precision cylindrical roller bearings | — | Single-row / NN / Cylindrical bore |
| Detailed type | Super-precision double row cylindrical roller bearing with tapered bore and lubrication feature | Cylindrical roller bearings | Cylindrical roller bearings |
| Series | — | NN3044 | — |
| Bore diameterd | 220 mm | 220 mm | 220 mm |
| Outside diameterD | 340 mm | 340 mm | 340 mm |
| WidthB | 90 mm | 90 mm | 90 mm |
| Basic dynamic load ratingC | 809 kN | 810 kN | 944 kN |
| Basic static load ratingC0 | 1460 kN | 1450 kN | 1370 kN |
| Fatigue load limitPu | 143 kN | 166 kN | 163 kN |
| Limiting speednG | — | — | 1600 r/min |
| Mass≈m | 27.9 kg | 29.1 kg | 29.3 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 - NN - Cylindrical bore |
| Official Classification 1 | — | — | Cylindrical roller bearings / Single-row / NN / Cylindrical bore |
| Dimensions | |||
| Minimum chamfer dimensionr1 min | — | 3 mm | — |
| Minimum chamfer dimensionr1 min | — | 0.118 in | — |
| Raceway diameter outer ringE | — | 310 mm | — |
| Raceway diameter outer ringE | — | 12.205 in | — |
| Width of lubricating groovens | — | 15 mm | — |
| Width of lubricating groovens | — | 0.591 in | — |
| Diameter lubrication holeds | — | 8 mm | — |
| Diameter lubrication holeds | — | 0.315 in | — |
| Axial displacements | — | 5.7 mm | — |
| Axial displacements | — | 0.224 in | — |
| Engineering — Abutment dimensions | |||
| Abutment diameter shaftd a | min. 233 mm | — | — |
| Abutment diameter housingD a | max. 327 mm | — | — |
| Fillet radiusr a | max. 2.5 mm | — | — |
| Oil nozzle position (not for variants with TNHA cage)d n | 302.5 mm | — | — |
| Engineering — Calculation data | |||
| Attainable speed for grease lubrication | 2400.0 r/min | — | — |
| Attainable speed for oil-air lubrication | 2800.0 r/min | — | — |
| Reference grease quantityG ref | 260 cm³ | — | — |
| Static radial stiffness (guideline value) | 4700 N/µm | — | — |
| Engineering — Dimensions | |||
| Shoulder diameter inner ring (NN design)d 1 | 265.2 mm | — | — |
| Raceway diameter outer ring (NN design)E | 310 mm | — | — |
| Width annular lubrication groove at outer ringb | 15 mm | — | — |
| Diameter lubrication hole (outer ring)K | 7.5 mm | — | — |
| Chamfer dimension outer ringr 1,2 | min. 3 mm | — | — |
| Chamfer dimension inner ring (bearing with tapered bore)r 3,4 | min. 1.1 mm | — | — |
| Permissible axial displacement from the normal position of one bearing ring relative to the other (all)s | max. 2 mm | — | — |
| Engineering — Engineering specifications | |||
| Bore type | Tapered 1:12 | — | — |
| Logistics | |||
| Product net weight | 27.9 kg | — | — |
| eClass code | 23-05-09-01 | — | — |
| UNSPSC code | 31171505 | — | — |
| Main Dimensions & Performance Data | |||
| Basic dynamic load rating, radialCr | — | 810,000 N | — |
| Basic dynamic load rating, radialCr | — | 182,104.317 lbf | — |
| Basic static load rating, radialC0r | — | 1,450,000 N | — |
| Basic static load rating, radialC0r | — | 325,989.209 lbf | — |
| Fatigue load limit, radialCur | — | 166,000 N | — |
| Fatigue load limit, radialCur | — | 37,320.144 lbf | — |
| Limiting speed for grease lubricationnG Grease | — | 2,290 1/min | — |
| Limiting speed for oil lubricationnG Oil | — | 2,700 1/min | — |
| Manufacturer Identity | |||
| Schaeffler Product Code | — | 374737 | — |
| Official Class Key | — | — | 040-020-010 |
| Base Type | — | NN3044 | — |
| Old Designation | — | ["NN3044ASK.M.SP"] | — |
| Gpsd Group | — | F07 | — |
| Product Line Id | — | 39 | — |
| SAP material number | — | 0192315550000 | — |
| Base product | — | 230509014D | — |
| Bearing X designation | — | NN3044-AS-K-M-SP | — |
| Mounting Manager ID | — | NN3044-AS-K-M-SP | — |
| Mounting dimensions | |||
| Diameter shaft shoulderda | — | 254 mm | — |
| Diameter shaft shoulderda | — | 10 in | — |
| Diameter shaft shoulder tolerance | — | h12 | — |
| Diameter of housing shoulderDa | — | 317 mm | — |
| Diameter of housing shoulderDa | — | 12.48 in | — |
| Shoulder diameter outer ring clearance | — | 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 | — |
| Change markA | — | Internal Variant A | — |
| 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 NN30..-AS-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 | NN | — | — |
| Number of flanges, outer ring | 0 | — | — |
| Number of flanges, inner ring | 3 | — | — |
| 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 | 103.0 kg CO 2 e | — | — |
| Technical Data | |||
| d | — | — | 340 mm |
| B | — | — | 90 mm |
| R(Min.) | — | — | 3 mm |
| Bore Diameter (D) | — | 220 mm | — |
| Fw | — | — | - mm |
| Outside Diamater (D) | — | 340 mm | — |
| Ew | — | — | 310 mm |
| Total Width (B) | — | 90 mm | — |
| Basic Load Ratings : Cr | — | — | 944 kN |
| Basic Dynamic Load Rating, Radial (Cr) | — | 810,000 N | — |
| Basic Load Ratings : C0R | — | — | 1370 kN |
| Basic Static Load Rating, Radial (C0R) | — | 1,450,000 N | — |
| Fatigue Load Limit : Cu | — | — | 163 kN |
| Diameter Lubrication Hole (Ds) | — | 8 mm | — |
| Limiting Speeds(Grease Lub.) | — | — | 1600 min-1 |
| Operating Temperature Min. (Tmin) | — | -30 °C | — |
| Limiting Speeds(Oil Lub.) | — | — | 1900 min-1 |
| Limiting Speed For Grease Lubrication (Ng Grea) | — | 2,290 1/min | — |
| Da(Min.) | — | — | 313 mm |
| Minimum Diameter Shaft Shoulder (Da) | — | 254 mm | — |
| Da(Max.) | — | — | 327 mm |
| Limiting Speed (Ng Oil) | — | 2,700 1/min | — |
| Db(Min.) | — | — | - mm |
| Operating Temperature Max. (Tmax) | — | 150 °C | — |
| Maximum Diameter Of Housing Shoulder (Da) | — | 317 mm | — |
| Ra(Max.) | — | — | 2.5 mm |
| Minimum Chamfer Dimension (R1 Min) | — | 3 mm | — |
| Mass(Refer.) | — | — | 29.3 kg |
| Width Of Lubricating Groove (Ns) | — | 15 mm | — |
| Axial Displacement (S) | — | 5.7 mm | — |
| Maximum Recess Radius (Ra1 Max) | — | 2.5 mm | — |
| Raceway Diameter Outer Ring (E) | — | 310 mm | — |
| Fatigue Load Limit, Radial (Cur) | — | 166,000 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.