Cross-brand designation analysis
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“QJ338” 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 | SKFQJ 338 N2MA190 × 400 × 78 mm | FAGQJ338-N2-MPA190 × 400 × 78 mm | NSKQJ338190 × 400 × 78 mm |
|---|---|---|---|
| Comparable specifications | |||
| Brand | SKF | FAG | NSK |
| Designation | QJ 338 N2MA | QJ338-N2-MPA | QJ338 |
| Product family | Angular contact ball bearings | — | Four point contact ball bearing |
| Detailed type | Four-point contact ball bearing with locating slots | Four-point contact bearing | Four point contact ball bearing |
| Series | — | QJ338 | — |
| Bore diameterd | 190 mm | 190 mm | 190 mm |
| Outside diameterD | 400 mm | 400 mm | 400 mm |
| WidthB | 78 mm | 78 mm | 78 mm |
| Basic dynamic load ratingC | 702 kN | 740 kN | — |
| Basic static load ratingC0 | 1160 kN | 1250 kN | — |
| Fatigue load limitPu | 28.5 kN | 40.5 kN | — |
| Reference speednref | — | 1320 r/min | — |
| Limiting speednG | 2800 r/min | 2850 r/min | — |
| Mass≈m | 50 kg | 51.4 kg | 54.5 kg |
| Precision class | — | PN — Normal (ISO 492:2023) | — |
| Sealing | Without | — | — |
| Cage | Machined brass | MPA — Solid brass cage, outer ring guided | Machined brass |
| Bearing material | Bearing steel | — | — |
| Lubricant | None | — | — |
| Minimum operating temperatureTmin | — | -30 °C | — |
| Maximum operating temperatureTmax | — | 200 °C | — |
| Axial load ratings | |||
| Basic dynamic axial load ratingCa | — | — | 720000 N |
| Basic static axial load ratingC0a | — | — | 1980000 N |
| Boundary dimensions | |||
| Individual bearing widthB | — | — | 78 mm |
| Minimum bearing chamferr min. | — | — | 5 mm |
| Capabilities & suitability | |||
| Radial load capacity | — | Yes | — |
| Axial load capacity in one direction | — | Yes | — |
| Axial load capacity in both directions | — | Yes | — |
| Suitable for grease lubrication | — | Yes | — |
| Suitable for oil lubrication | — | Yes | — |
| Unsealed design | — | Yes | — |
| Largebearing | — | Yes | — |
| Construction | |||
| Nominal contact angleα | — | — | 35 ° |
| Cage material and construction | — | — | Machined brass |
| Construction / arrangement | — | — | Four-point contact bearing, split inner ring |
| Dimensions | |||
| Contact angle | 35.0 ° | — | — |
| Minimum chamfer dimensionrmin | — | 5 mm | — |
| Minimum chamfer dimensionrmin | — | 0.197 in | — |
| Shoulder diameter outer ringD1 | — | 329.1 mm | — |
| Shoulder diameter outer ringD1 | — | 12.957 in | — |
| Shoulder diameter inner ringd1 | — | 263.9 mm | — |
| Shoulder diameter inner ringd1 | — | 10.39 in | — |
| Distance between the apexes of the pressure conesa | — | 206.6 mm | — |
| Distance between the apexes of the pressure conesa | — | 8.134 in | — |
| Hight retaining slotan | — | 12.7 mm | — |
| Hight retaining slotan | — | 0.5 in | — |
| Width retaining slotbn | — | 10.5 mm | — |
| Width retaining slotbn | — | 0.413 in | — |
| Radius retaining slotrn | — | 2 mm | — |
| Radius retaining slotrn | — | 0.079 in | — |
| Angle retaining slot | — | 45 ° | — |
| Contact angleα | — | 35 ° | — |
| Engineering — Abutment dimensions | |||
| Abutment diameter shaftd a | min. 210 mm | — | — |
| Abutment diameter housingD a | max. 380 mm | — | — |
| Fillet radiusr a | max. 4 mm | — | — |
| Engineering — Calculation data | |||
| Calculation factorA | 4.5 | — | — |
| Limiting valuee | 0.95 | — | — |
| Calculation factorX | 0.6 | — | — |
| Calculation factorY 0 | 0.58 | — | — |
| Calculation factorY 1 | 0.66 | — | — |
| Calculation factorY 2 | 1.1 | — | — |
| Engineering — Dimensions | |||
| Shoulder diameter inner ringd 1 | ≈ 263 mm | — | — |
| Shoulder diameter outer ring/ inner diameter housing washerD 1 | ≈ 326 mm | — | — |
| Distance pressure point(s)a | 207 mm | — | — |
| Locating slot depth outer ringh | 12.7 mm | — | — |
| Locating slot width outer ringb | 10.5 mm | — | — |
| Corner radius locating slotr 0 | 2 mm | — | — |
| Chamfer dimension inner ringr 1,2 | min. 5 mm | — | — |
| Load-centre geometry | |||
| Load-centre spacinga0 | — | — | 206.6 mm |
| Logistics | |||
| Product net weight | 50.0 kg | — | — |
| eClass code | 23-05-08-05 | — | — |
| UNSPSC code | 31171538 | — | — |
| Lubrication-qualified speed | |||
| Limiting speed — grease | — | — | 1300 r/min |
| Limiting speed — oil | — | — | 1700 r/min |
| Main Dimensions & Performance Data | |||
| Basic dynamic load rating, radialCr | — | 740,000 N | — |
| Basic dynamic load rating, radialCr | — | 166,366.906 lbf | — |
| Basic static load rating, radialC0r | — | 1,250,000 N | — |
| Basic static load rating, radialC0r | — | 281,025.18 lbf | — |
| Fatigue load limit, radialCur | — | 40,500 N | — |
| Fatigue load limit, radialCur | — | 9,105.216 lbf | — |
| Manufacturer Identity | |||
| Schaeffler Product Code | — | 366778 | — |
| Base Type | — | QJ338 | — |
| Old Designation | — | ["QJ338N2MPA"] | — |
| Gpsd Group | — | S03 | — |
| Product Line Id | — | 14 | — |
| SAP material number | — | 0192626390000 | — |
| Base product | — | 230508AD41 | — |
| Bearing X designation | — | QJ338-N2-MPA | — |
| Mounting Manager ID | — | QJ338-N2-MPA | — |
| Grease application ID | — | QJ338-N2-MPA | — |
| Mass reference | |||
| Approximate mass | — | — | 54.5 kg |
| Mounting dimensions | |||
| Minimum diameter shaft shoulderda min | — | 210 mm | — |
| Minimum diameter shaft shoulderda min | — | 8.268 in | — |
| Maximum diameter of housing shoulderDa max | — | 380 mm | — |
| Maximum diameter of housing shoulderDa max | — | 14.961 in | — |
| Maximum fillet radiusra max | — | 4 mm | — |
| Maximum fillet radiusra max | — | 0.157 in | — |
| Mounting dimensions — shown arrangement | |||
| Minimum shaft shoulder diameterda min. | — | — | 212 mm |
| Maximum housing shoulder diameterDa max. | — | — | 378 mm |
| Maximum adjacent fillet radiusra max. | — | — | 4 mm |
| Product characteristics | |||
| Design, bearing outer ringN2 | — | Two retaining grooves in the outer ring on one side | — |
| Tolerance classPN | — | Normal (ISO 492:2023) | — |
| Dimensional / heat stabilizationS1 | — | Rings dimensional stabilized up to 200° | — |
| Axial internal clearanceCN | — | Group N (CN) | — |
| Product identity | |||
| Official product category | Angular contact ball bearings | — | — |
| Official taxonomy path | /products/rolling-bearings/ball-bearings/angular-contact-ball-bearings/four-point-contact-ball-bearings | — | — |
| Structure group ID | BAQ_001 | — | — |
| Available from SKF | Yes | — | — |
| Remanufacturable | Yes | — | — |
| Product Identity | |||
| Construction | — | Four point contact bearing QJ3..-N2-MPA, holding grooves, solid brass cage | — |
| Short Description | — | Four-point contact bearing | — |
| Properties | |||
| Contact type | Four-point contact | — | — |
| Number of rows | 1 | — | — |
| Locating feature, bearing outer ring | Locating slot | — | — |
| Ring type | Two-piece inner ring and one-piece outer ring | — | — |
| Matched arrangement | No | — | — |
| Universal matching bearing | No | — | — |
| Axial internal clearance | CN | — | — |
| Material, bearing | Bearing steel | — | — |
| Coating | Without | — | — |
| Relubrication feature | Without | — | — |
| Indicative carbon footprint for new product | 185.0 kg CO 2 e | — | — |
| Technical Data | |||
| Bore Diameter (D) | — | 190 mm | — |
| Outside Diameter (D) | — | 400 mm | — |
| Width (B) | — | 78 mm | — |
| Basic Dynamic Load Rating, Radial (Cr) | — | 740,000 N | — |
| Basic Static Load Rating, Radial (C0R) | — | 1,250,000 N | — |
| Operating Temperature Min. (Tmin) | — | -30 °C | — |
| Limiting Speed (Ng) | — | 2,850 1/min | — |
| Operating Temperature Max. (Tmax) | — | 200 °C | — |
| Reference Speed (Nϑr) | — | 1,320 1/min | — |
| Angle Retaining Slot (Angle Retain) | — | 45 ° | — |
| Hight Retaining Slot (An) | — | 12.7 mm | — |
| Radius Retaining Slot (Rn) | — | 2 mm | — |
| Fatigue Load Limit, Radial (Cur) | — | 40,500 N | — |
| Minimum Diameter Shaft Shoulder (Da Min) | — | 210 mm | — |
| Shoulder Diameter Inner Ring (D1) | — | 263.9 mm | — |
| Maximum Diameter Of Housing Shoulder (Da Max) | — | 380 mm | — |
| Minimum Chamfer Dimension (Rmin) | — | 5 mm | — |
| Maximum Fillet Radius (Ra Max) | — | 4 mm | — |
| Shoulder Diameter Outer Ring (D1) | — | 329.1 mm | — |
| Contact Angle (Α) | — | 35 ° | — |
| Distance Between The Apexes Of The Pressure Cones (A) | — | 206.6 mm | — |
| Width Retaining Slot (Bn) | — | 10.5 mm | — |
| Temperature range | |||
| Operating temperature min.Tmin | — | -30 °C | — |
| Operating temperature min.Tmin | — | -22 °F | — |
| Operating temperature max.Tmax | — | 200 °C | — |
| Operating temperature max.Tmax | — | 392 °F | — |
Automatic matching is a search aid, not an interchangeability declaration. Confirm the full suffix, tolerances, internal design and application limits before substitution.