Cross-brand designation analysis
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Same-model Comparison
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
Exact designations rank first. Dimensions, suffixes and other technical differences remain visible so the result is not mistaken for an interchangeability declaration.
Dimensions verified
“51172” 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 | FAG51172-MP360 × 440 × 65 mm | NSK51172X360 × 440 × 65 mm | KOYO51172360 × 440 × 65 mm |
|---|---|---|---|
| Comparable specifications | |||
| Brand | FAG | NSK | KOYO |
| Designation | 51172-MP | 51172X | 51172 |
| 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 | 51172 | — | — |
| Bore diameterd | 360 mm | 360 mm | 360 mm |
| Outside diameterD | 440 mm | 440 mm | 440 mm |
| WidthB | 65 mm | 65 mm | 65 mm |
| Fatigue load limitPu | — | — | 44.3 kN |
| Reference speednref | 930 r/min | — | — |
| Limiting speednG | 1110 r/min | — | 500 r/min |
| Mass≈m | 21 kg | 21.5 kg | 21.5 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 | — | 360 mm | — |
| Overall outside diameterD | — | 440 mm | — |
| Complete assembled heightT | — | 65 mm | — |
| Axial load ratings | |||
| Basic dynamic axial load ratingCa | — | 385000 N | — |
| Basic static axial load ratingC0a | — | 1860000 N | — |
| Calculation factors | |||
| Minimum load factorA | 22 | — | — |
| Capabilities & suitability | |||
| Axial load capacity in one direction | Yes | — | — |
| Suitable for grease lubrication | Yes | — | — |
| Suitable for oil lubrication | Yes | — | — |
| Unsealed design | Yes | — | — |
| Largebearing | Yes | — | — |
| Chamfers | |||
| Minimum housing-side chamferr min. | — | 2 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 | — | 436 mm | — |
| Housing washer bore diameterD1 | — | 364 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 | 2 mm | — | — |
| Minimum chamfer dimensionrmin | 0.079 in | — | — |
| Inner diameter housing washerD1 | 364 mm | — | — |
| Inner diameter housing washerD1 | 14.331 in | — | — |
| Outer diameter shaft washerd1 | 436 mm | — | — |
| Outer diameter shaft washerd1 | 17.165 in | — | — |
| Lubrication-qualified speed | |||
| Limiting speed — grease | — | 560 r/min | — |
| Limiting speed — oil | — | 800 r/min | — |
| Main Dimensions & Performance Data | |||
| Inner diameter shaft washerd | 360 mm | — | — |
| Inner diameter shaft washerd | 14.173 in | — | — |
| Outer diameter housing washerD | 440 mm | — | — |
| Outer diameter housing washerD | 17.323 in | — | — |
| Basic dynamic load rating, axialCa | 405,000 N | — | — |
| Basic dynamic load rating, axialCa | 91,052.158 lbf | — | — |
| Basic static load rating, axialC0a | 2,020,000 N | — | — |
| Basic static load rating, axialC0a | 454,136.691 lbf | — | — |
| Fatigue load limit, axialCua | 46,500 N | — | — |
| Fatigue load limit, axialCua | 10,454.137 lbf | — | — |
| Manufacturer Identity | |||
| Schaeffler Product Code | 394500 | — | — |
| Official Class Key | — | — | 070-010-000 |
| Base Type | 51172 | — | — |
| Old Designation | ["51172MP"] | — | — |
| Gpsd Group | S02 | — | — |
| Product Line Id | 14 | — | — |
| X Life Marking | n.r. | — | — |
| SAP material number | 0190616090000 | — | — |
| Base product | 2305100101 | — | — |
| Bearing X designation | 51172-MP | — | — |
| Mounting Manager ID | 51172-MP | — | — |
| Grease application ID | 51172-MP | — | — |
| Mass reference | |||
| Approximate assembly mass | — | 21.5 kg | — |
| Mounting dimensions | |||
| Minimum shaft abutment diameterda min. | — | 408 mm | — |
| Maximum housing abutment diameterDa max. | — | 392 mm | — |
| Maximum housing-side fillet radiusra max. | — | 2 mm | — |
| Minimum diameter shaft shoulderda min | 408 mm | — | — |
| Minimum diameter shaft shoulderda min | 16.063 in | — | — |
| Maximum diameter of housing shoulderDa max | 392 mm | — | — |
| Maximum diameter of housing shoulderDa max | 15.433 in | — | — |
| Maximum filled radiusra max | 2 mm | — | — |
| Maximum filled radiusra max | 0.079 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 | — | — | 440 mm |
| T | — | — | 65 mm |
| R(Min.) | — | — | 2 mm |
| Basic Load Ratings Ca | — | — | 493 kN |
| Bore Diameter (D) | 360 mm | — | — |
| Basic Load Ratings C0A | — | — | 1960 kN |
| Outside Diameter (D) | 440 mm | — | — |
| Fatigue Load Limit : Cu | — | — | 44.3 kN |
| Width (B) | 65 mm | — | — |
| Limiting Speeds(Grease Lub.) | — | — | 500 min-1 |
| Basic Dynamic Load Rating, Axial (Ca) | 405,000 N | — | — |
| Limiting Speeds(Oil Lub.) | — | — | 720 min-1 |
| Basic Static Load Rating, Axial (C0A) | 2,020,000 N | — | — |
| D1(Max.) | — | — | 436 mm |
| Operating Temperature Min. (Tmin) | -30 °C | — | — |
| D1(Min.) | — | — | 364 mm |
| Limiting Speed (Ng) | 1,110 1/min | — | — |
| D2 | — | — | - mm |
| Operating Temperature Max. (Tmax) | 200 °C | — | — |
| D3 | — | — | - mm |
| Reference Speed (Nϑr) | 930 1/min | — | — |
| A | — | — | - mm |
| Minimum Diameter Shaft Shoulder (Da Min) | 408 mm | — | — |
| R | — | — | - mm |
| Minimum Load Factor (A) | 22 | — | — |
| C | — | — | - mm |
| Rip Diameter Shaft Washer (D1) | 436 mm | — | — |
| Da(Min.) | — | — | 408 mm |
| Bore Diameter Housing Washer (D1) | 364 mm | — | — |
| Da(Max.) | — | — | 392 mm |
| Maximum Diameter Of Housing Shoulder (Da Max) | 392 mm | — | — |
| Ra(Max.) | — | — | 2 mm |
| Minimum Chamfer Dimension (Rmin) | 2 mm | — | — |
| Mass(Refer.) | — | — | 21.5 kg |
| Maximum Fillet Radius (Ra Max) | 2 mm | — | — |
| Fatigue Load Limit, Axial (Cua) | 46,500 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.