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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“QJ234” 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 234 N2MA170 × 310 × 52 mm | FAGQJ234-N2-MPA170 × 310 × 52 mm | NSKQJ234170 × 310 × 52 mm |
|---|---|---|---|
| Comparable specifications | |||
| Brand | SKF | FAG | NSK |
| Designation | QJ 234 N2MA | QJ234-N2-MPA | QJ234 |
| 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 | — | QJ234 | — |
| Bore diameterd | 170 mm | 170 mm | 170 mm |
| Outside diameterD | 310 mm | 310 mm | 310 mm |
| WidthB | 52 mm | 52 mm | 52 mm |
| Basic dynamic load ratingC | 455 kN | 420 kN | — |
| Basic static load ratingC0 | 720 kN | 630 kN | — |
| Fatigue load limitPu | 20 kN | 23.5 kN | — |
| Reference speednref | — | 2010 r/min | — |
| Limiting speednG | 3400 r/min | 3750 r/min | — |
| Mass≈m | 18.4 kg | 18.7 kg | 19.5 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 | — | — | 470000 N |
| Basic static axial load ratingC0a | — | — | 1180000 N |
| Boundary dimensions | |||
| Individual bearing widthB | — | — | 52 mm |
| Minimum bearing chamferr min. | — | — | 4 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 | — |
| 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 | — | 4 mm | — |
| Minimum chamfer dimensionrmin | — | 0.157 in | — |
| Shoulder diameter outer ringD1 | — | 260.5 mm | — |
| Shoulder diameter outer ringD1 | — | 10.256 in | — |
| Shoulder diameter inner ringd1 | — | 221.54 mm | — |
| Shoulder diameter inner ringd1 | — | 8.722 in | — |
| Distance between the apexes of the pressure conesa | — | 168 mm | — |
| Distance between the apexes of the pressure conesa | — | 6.614 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. 187 mm | — | — |
| Abutment diameter housingD a | max. 293 mm | — | — |
| Fillet radiusr a | max. 3 mm | — | — |
| Engineering — Calculation data | |||
| SKF performance class | SKF Explorer | — | — |
| Calculation factorA | 1.3 | — | — |
| 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 | ≈ 204 mm | — | — |
| Shoulder diameter outer ring/ inner diameter housing washerD 1 | ≈ 243 mm | — | — |
| Distance pressure point(s)a | 168 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. 4 mm | — | — |
| Load-centre geometry | |||
| Load-centre spacinga0 | — | — | 168 mm |
| Logistics | |||
| Product net weight | 18.4 kg | — | — |
| eClass code | 23-05-08-05 | — | — |
| UNSPSC code | 31171538 | — | — |
| Lubrication-qualified speed | |||
| Limiting speed — grease | — | — | 1600 r/min |
| Limiting speed — oil | — | — | 2200 r/min |
| Main Dimensions & Performance Data | |||
| Basic dynamic load rating, radialCr | — | 420,000 N | — |
| Basic dynamic load rating, radialCr | — | 94,424.46 lbf | — |
| Basic static load rating, radialC0r | — | 630,000 N | — |
| Basic static load rating, radialC0r | — | 141,636.691 lbf | — |
| Fatigue load limit, radialCur | — | 23,500 N | — |
| Fatigue load limit, radialCur | — | 5,283.273 lbf | — |
| Manufacturer Identity | |||
| Schaeffler Product Code | — | 366543 | — |
| Base Type | — | QJ234 | — |
| Old Designation | — | ["QJ234N2MPA"] | — |
| Gpsd Group | — | S03 | — |
| Product Line Id | — | 14 | — |
| SAP material number | — | 0167423620000 | — |
| Base product | — | 230508AD41 | — |
| Bearing X designation | — | QJ234-N2-MPA | — |
| Mounting Manager ID | — | QJ234-N2-MPA | — |
| Grease application ID | — | QJ234-N2-MPA | — |
| Mass reference | |||
| Approximate mass | — | — | 19.5 kg |
| Mounting dimensions | |||
| Minimum diameter shaft shoulderda min | — | 187 mm | — |
| Minimum diameter shaft shoulderda min | — | 7.362 in | — |
| Maximum diameter of housing shoulderDa max | — | 293 mm | — |
| Maximum diameter of housing shoulderDa max | — | 11.535 in | — |
| Maximum fillet radiusra max | — | 3 mm | — |
| Maximum fillet radiusra max | — | 0.118 in | — |
| Mounting dimensions — shown arrangement | |||
| Minimum shaft shoulder diameterda min. | — | — | 188 mm |
| Maximum housing shoulder diameterDa max. | — | — | 292 mm |
| Maximum adjacent fillet radiusra max. | — | — | 3 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 QJ2..-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 | 68.0 kg CO 2 e | — | — |
| Technical Data | |||
| Bore Diameter (D) | — | 170 mm | — |
| Outside Diameter (D) | — | 310 mm | — |
| Width (B) | — | 52 mm | — |
| Basic Dynamic Load Rating, Radial (Cr) | — | 420,000 N | — |
| Basic Static Load Rating, Radial (C0R) | — | 630,000 N | — |
| Operating Temperature Min. (Tmin) | — | -30 °C | — |
| Limiting Speed (Ng) | — | 3,750 1/min | — |
| Operating Temperature Max. (Tmax) | — | 200 °C | — |
| Reference Speed (Nϑr) | — | 2,010 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) | — | 23,500 N | — |
| Minimum Diameter Shaft Shoulder (Da Min) | — | 187 mm | — |
| Shoulder Diameter Inner Ring (D1) | — | 221.54 mm | — |
| Maximum Diameter Of Housing Shoulder (Da Max) | — | 293 mm | — |
| Minimum Chamfer Dimension (Rmin) | — | 4 mm | — |
| Maximum Fillet Radius (Ra Max) | — | 3 mm | — |
| Shoulder Diameter Outer Ring (D1) | — | 260.5 mm | — |
| Contact Angle (Α) | — | 35 ° | — |
| Distance Between The Apexes Of The Pressure Cones (A) | — | 168 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.