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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One base designation across loaded brands
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Dimensions verified
“QJ1256” 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 | SKFQJ 1256 N2MA280 × 500 × 90 mm | FAGQJ1256-N2-MPA-C3280 × 500 × 90 mm |
|---|---|---|
| Comparable specifications | ||
| Brand | SKF | FAG |
| Designation | QJ 1256 N2MA | QJ1256-N2-MPA-C3 |
| Product family | Angular contact ball bearings | — |
| Detailed type | Four-point contact ball bearing with locating slots | Four-point contact bearing |
| Series | — | QJ1256 |
| Bore diameterd | 280 mm | 280 mm |
| Outside diameterD | 500 mm | 500 mm |
| WidthB | 90 mm | 90 mm |
| Basic dynamic load ratingC | 728 kN | 790 kN |
| Basic static load ratingC0 | 1460 kN | 1600 kN |
| Fatigue load limitPu | 31.5 kN | 45.5 kN |
| Reference speednref | — | 1110 r/min |
| Limiting speednG | 2000 r/min | 2240 r/min |
| Mass≈m | 82 kg | 81.8 kg |
| Precision class | — | PN — Normal (ISO 492:2023) |
| Sealing | Without | — |
| Cage | Machined brass | MPA — Solid brass cage, outer ring guided |
| Bearing material | Bearing steel | — |
| Lubricant | None | — |
| Minimum operating temperatureTmin | — | -30 °C |
| Maximum operating temperatureTmax | — | 200 °C |
| 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 |
| Dimensions | ||
| Contact angle | 45.0 ° | — |
| Minimum chamfer dimensionrmin | — | 5 mm |
| Minimum chamfer dimensionrmin | — | 0.197 in |
| Shoulder diameter outer ringD1 | — | 420.8 mm |
| Shoulder diameter outer ringD1 | — | 16.567 in |
| Shoulder diameter inner ringd1 | — | 362.45 mm |
| Shoulder diameter inner ringd1 | — | 14.27 in |
| Distance between the apexes of the pressure conesa | — | 390 mm |
| Distance between the apexes of the pressure conesa | — | 15.354 in |
| Hight retaining slotan | — | 15 mm |
| Hight retaining slotan | — | 0.591 in |
| Width retaining slotbn | — | 12.5 mm |
| Width retaining slotbn | — | 0.492 in |
| Radius retaining slotrn | — | 2.5 mm |
| Radius retaining slotrn | — | 0.098 in |
| Angle retaining slot | — | 45 ° |
| Contact angleα | — | 45 ° |
| Engineering — Abutment dimensions | ||
| Abutment diameter shaftd a | min. 302 mm | — |
| Abutment diameter housingD a | max. 478 mm | — |
| Fillet radiusr a | max. 4 mm | — |
| Engineering — Calculation data | ||
| Calculation factorA | 13 | — |
| Limiting valuee | 1.3 | — |
| Calculation factorX | 0.54 | — |
| Calculation factorY 0 | 0.44 | — |
| Calculation factorY 1 | 0.47 | — |
| Calculation factorY 2 | 0.81 | — |
| Engineering — Dimensions | ||
| Shoulder diameter inner ringd 1 | ≈ 365 mm | — |
| Shoulder diameter outer ring/ inner diameter housing washerD 1 | ≈ 415 mm | — |
| Distance pressure point(s)a | 390 mm | — |
| Locating slot depth outer ringh | 15 mm | — |
| Locating slot width outer ringb | 12.5 mm | — |
| Corner radius locating slotr 0 | 2.5 mm | — |
| Chamfer dimension inner ringr 1,2 | min. 5 mm | — |
| Logistics | ||
| Product net weight | 82.0 kg | — |
| Main Dimensions & Performance Data | ||
| Basic dynamic load rating, radialCr | — | 790,000 N |
| Basic dynamic load rating, radialCr | — | 177,607.914 lbf |
| Basic static load rating, radialC0r | — | 1,600,000 N |
| Basic static load rating, radialC0r | — | 359,712.23 lbf |
| Fatigue load limit, radialCur | — | 45,500 N |
| Fatigue load limit, radialCur | — | 10,229.317 lbf |
| Manufacturer Identity | ||
| Schaeffler Product Code | — | 366491 |
| Base Type | — | QJ1256 |
| Gpsd Group | — | S03 |
| Product Line Id | — | 14 |
| SAP material number | — | 0543081600030 |
| Base product | — | 230508AD41 |
| Bearing X designation | — | QJ1256-N2-MPA-C3 |
| Mounting Manager ID | — | QJ1256-N2-MPA-C3 |
| Grease application ID | — | QJ1256-N2-MPA-C3 |
| Mounting dimensions | ||
| Minimum diameter shaft shoulderda min | — | 300 mm |
| Minimum diameter shaft shoulderda min | — | 11.811 in |
| Maximum diameter of housing shoulderDa max | — | 480 mm |
| Maximum diameter of housing shoulderDa max | — | 18.898 in |
| Maximum fillet radiusra max | — | 4 mm |
| Maximum fillet radiusra max | — | 0.157 in |
| 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 clearanceC3 | — | Group 3 (C3), bigger than 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 QJ12..-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 | 303.0 kg CO 2 e | — |
| Technical Data | ||
| Bore Diameter (D) | — | 280 mm |
| Outside Diameter (D) | — | 500 mm |
| Width (B) | — | 90 mm |
| Basic Dynamic Load Rating, Radial (Cr) | — | 790,000 N |
| Basic Static Load Rating, Radial (C0R) | — | 1,600,000 N |
| Operating Temperature Min. (Tmin) | — | -30 °C |
| Limiting Speed (Ng) | — | 2,240 1/min |
| Operating Temperature Max. (Tmax) | — | 200 °C |
| Reference Speed (Nϑr) | — | 1,110 1/min |
| Angle Retaining Slot (Angle Retain) | — | 45 ° |
| Hight Retaining Slot (An) | — | 15 mm |
| Radius Retaining Slot (Rn) | — | 2.5 mm |
| Fatigue Load Limit, Radial (Cur) | — | 45,500 N |
| Minimum Diameter Shaft Shoulder (Da Min) | — | 300 mm |
| Shoulder Diameter Inner Ring (D1) | — | 362.45 mm |
| Maximum Diameter Of Housing Shoulder (Da Max) | — | 480 mm |
| Minimum Chamfer Dimension (Rmin) | — | 5 mm |
| Maximum Fillet Radius (Ra Max) | — | 4 mm |
| Shoulder Diameter Outer Ring (D1) | — | 420.8 mm |
| Contact Angle (Α) | — | 45 ° |
| Distance Between The Apexes Of The Pressure Cones (A) | — | 390 mm |
| Width Retaining Slot (Bn) | — | 12.5 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.