Cross-brand designation analysis
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You entered 51148X. This table explores the base group 51148; it does not preserve or approve every requested suffix. Search your complete marking first →
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One base designation across loaded brands
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Dimensions verified
“51148” 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 | FAG51148-MP240 × 300 × 45 mm | NSK51148X240 × 300 × 45 mm | KOYO51148240 × 300 × 45 mm |
|---|---|---|---|
| Comparable specifications | |||
| Brand | FAG | NSK | KOYO |
| Designation | 51148-MP | 51148X | 51148 |
| Product family | — | Axial deep groove ball bearing | Single direction / With flat back faces |
| Detailed type | Axial deep groove ball bearings | Axial deep groove ball bearings | Axial deep groove ball bearings |
| Series | 51148 | — | — |
| Bore diameterd | 240 mm | 240 mm | 240 mm |
| Outside diameterD | 300 mm | 300 mm | 300 mm |
| WidthB | 45 mm | 45 mm | 45 mm |
| Fatigue load limitPu | — | — | 28 kN |
| Reference speednref | 1540 r/min | — | — |
| Limiting speednG | 1640 r/min | — | 750 r/min |
| Mass≈m | 7.511 kg | 6.55 kg | 7.38 kg |
| Precision class | PN — Normal (ISO 492:2023) | — | — |
| Cage | MP — Solid brass cage, rolling element guided | — | — |
| Minimum operating temperatureTmin | -30 °C | — | — |
| Maximum operating temperatureTmax | 200 °C | — | — |
| Assembly boundary dimensions | |||
| Shaft-washer bore diameterd | — | 240 mm | — |
| Overall outside diameterD | — | 300 mm | — |
| Complete assembled heightT | — | 45 mm | — |
| Axial load ratings | |||
| Basic dynamic axial load ratingCa | — | 229000 N | — |
| Basic static axial load ratingC0a | — | 935000 N | — |
| Calculation factors | |||
| Minimum load factorA | 5.2 | — | — |
| Capabilities & suitability | |||
| Axial load capacity in one direction | Yes | — | — |
| Suitable for grease lubrication | Yes | — | — |
| Suitable for oil lubrication | Yes | — | — |
| Unsealed design | Yes | — | — |
| Chamfers | |||
| Minimum housing-side chamferr min. | — | 1.5 mm | — |
| Classification | |||
| Official Category Path | — | — | Thrust ball bearings - Single direction - With flat back faces |
| Official Classification 1 | — | — | Thrust ball bearings / Single direction / With flat back faces |
| Component dimensions | |||
| Shaft washer outside diameterd1 | — | 297 mm | — |
| Housing washer bore diameterD1 | — | 243 mm | — |
| Construction | |||
| Axial load directions | — | One direction | — |
| Seat construction | — | Flat seat | — |
| Radial-load support | — | Not suitable for radial load; separate radial support required | — |
| Dimensions | |||
| Minimum chamfer dimensionrmin | 1.5 mm | — | — |
| Minimum chamfer dimensionrmin | 0.059 in | — | — |
| Inner diameter housing washerD1 | 243 mm | — | — |
| Inner diameter housing washerD1 | 9.567 in | — | — |
| Outer diameter shaft washerd1 | 297 mm | — | — |
| Outer diameter shaft washerd1 | 11.693 in | — | — |
| Lubrication-qualified speed | |||
| Limiting speed — grease | — | 850 r/min | — |
| Limiting speed — oil | — | 1200 r/min | — |
| Main Dimensions & Performance Data | |||
| Inner diameter shaft washerd | 240 mm | — | — |
| Inner diameter shaft washerd | 9.449 in | — | — |
| Outer diameter housing washerD | 300 mm | — | — |
| Outer diameter housing washerD | 11.811 in | — | — |
| Basic dynamic load rating, axialCa | 237,000 N | — | — |
| Basic dynamic load rating, axialCa | 53,282.374 lbf | — | — |
| Basic static load rating, axialC0a | 990,000 N | — | — |
| Basic static load rating, axialC0a | 222,571.942 lbf | — | — |
| Fatigue load limit, axialCua | 27,500 N | — | — |
| Fatigue load limit, axialCua | 6,182.554 lbf | — | — |
| Manufacturer Identity | |||
| Schaeffler Product Code | 394488 | — | — |
| Official Class Key | — | — | 070-010-000 |
| Base Type | 51148 | — | — |
| Old Designation | ["51148MP"] | — | — |
| Gpsd Group | S02 | — | — |
| Product Line Id | 14 | — | — |
| X Life Marking | n.r. | — | — |
| SAP material number | 0190614120000 | — | — |
| Base product | 2305100101 | — | — |
| Bearing X designation | 51148-MP | — | — |
| Mounting Manager ID | 51148-MP | — | — |
| Grease application ID | 51148-MP | — | — |
| Mass reference | |||
| Approximate assembly mass | — | 6.55 kg | — |
| Mounting dimensions | |||
| Minimum shaft abutment diameterda min. | — | 276 mm | — |
| Maximum housing abutment diameterDa max. | — | 264 mm | — |
| Maximum housing-side fillet radiusra max. | — | 1.5 mm | — |
| Minimum diameter shaft shoulderda min | 276 mm | — | — |
| Minimum diameter shaft shoulderda min | 10.866 in | — | — |
| Maximum diameter of housing shoulderDa max | 264 mm | — | — |
| Maximum diameter of housing shoulderDa max | 10.394 in | — | — |
| Maximum filled radiusra max | 1.5 mm | — | — |
| Maximum filled radiusra max | 0.059 in | — | — |
| Product characteristics | |||
| Tolerance classPN | Normal (ISO 492:2023) | — | — |
| Dimensional / heat stabilizationS1 | Rings dimensional stabilized up to 200° | — | — |
| Product Identity | |||
| Construction | Axial deep groove ball bearing 511..-MP, single direction, solid brass cage | — | — |
| Short Description | Axial deep groove ball bearing | — | — |
| Technical Data | |||
| d | — | — | 300 mm |
| T | — | — | 45 mm |
| R(Min.) | — | — | 1.5 mm |
| Basic Load Ratings Ca | — | — | 301 kN |
| Bore Diameter (D) | 240 mm | — | — |
| Basic Load Ratings C0A | — | — | 1020 kN |
| Outside Diameter (D) | 300 mm | — | — |
| Fatigue Load Limit : Cu | — | — | 28 kN |
| Width (B) | 45 mm | — | — |
| Limiting Speeds(Grease Lub.) | — | — | 750 min-1 |
| Basic Dynamic Load Rating, Axial (Ca) | 237,000 N | — | — |
| Limiting Speeds(Oil Lub.) | — | — | 1150 min-1 |
| Basic Static Load Rating, Axial (C0A) | 990,000 N | — | — |
| D1(Max.) | — | — | 297 mm |
| Operating Temperature Min. (Tmin) | -30 °C | — | — |
| D1(Min.) | — | — | 243 mm |
| Limiting Speed (Ng) | 1,640 1/min | — | — |
| D2 | — | — | - mm |
| Operating Temperature Max. (Tmax) | 200 °C | — | — |
| D3 | — | — | - mm |
| Reference Speed (Nϑr) | 1,540 1/min | — | — |
| A | — | — | - mm |
| Minimum Diameter Shaft Shoulder (Da Min) | 276 mm | — | — |
| R | — | — | - mm |
| Minimum Load Factor (A) | 5.2 | — | — |
| C | — | — | - mm |
| Rip Diameter Shaft Washer (D1) | 297 mm | — | — |
| Da(Min.) | — | — | 276 mm |
| Bore Diameter Housing Washer (D1) | 243 mm | — | — |
| Da(Max.) | — | — | 264 mm |
| Maximum Diameter Of Housing Shoulder (Da Max) | 264 mm | — | — |
| Ra(Max.) | — | — | 1.5 mm |
| Minimum Chamfer Dimension (Rmin) | 1.5 mm | — | — |
| Mass(Refer.) | — | — | 7.38 kg |
| Maximum Fillet Radius (Ra Max) | 1.5 mm | — | — |
| Fatigue Load Limit, Axial (Cua) | 27,500 N | — | — |
| 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.