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| Parameter | NSK53336X180 × 300 × 99.3 mm | KOYO53336180 × 300 × 99.3 mm |
|---|---|---|
| Comparable specifications | ||
| Brand | NSK | KOYO |
| Designation | 53336X | 53336 |
| 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 |
| Bore diameterd | 180 mm | 180 mm |
| Outside diameterD | 300 mm | 300 mm |
| WidthB | 99.3 mm | 99.3 mm |
| Fatigue load limitPu | — | 46.2 kN |
| Limiting speednG | — | 490 r/min |
| Mass≈m | 29.2 kg | 26.9 kg |
| Aligning-seat geometry | ||
| Aligning-seat geometric referenceA | 91 mm | — |
| Spherical seat radiusR | 225 mm | — |
| Assembly boundary dimensions | ||
| Shaft-washer bore diameterd | 180 mm | — |
| Overall outside diameterD | 300 mm | — |
| Complete assembled heightT3 | 99.3 mm | — |
| Axial load ratings | ||
| Basic dynamic axial load ratingCa | 480000 N | — |
| Basic static axial load ratingC0a | 1680000 N | — |
| Chamfers | ||
| Minimum housing-side chamferr min. | 3 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 | 295 mm | — |
| Housing washer bore diameterD1 | 184 mm | — |
| Construction | ||
| Axial load directions | One direction | — |
| Seat construction | Aligning seat | — |
| Radial-load support | Not suitable for radial load; separate radial support required | — |
| Lubrication-qualified speed | ||
| Limiting speed — grease | 560 r/min | — |
| Limiting speed — oil | 850 r/min | — |
| Manufacturer Identity | ||
| Official Class Key | — | 070-010-000 |
| Mass reference | ||
| Approximate assembly mass | 29.2 kg | — |
| Mounting dimensions | ||
| Minimum shaft abutment diameterda min. | 251 mm | — |
| Maximum housing abutment diameterDa max. | 229 mm | — |
| Maximum housing-side fillet radiusra max. | 2.5 mm | — |
| Technical Data | ||
| d | — | 300 mm |
| T | — | 99.3 mm |
| R(Min.) | — | 3 mm |
| Basic Load Ratings Ca | — | 578 kN |
| Basic Load Ratings C0A | — | 1580 kN |
| Fatigue Load Limit : Cu | — | 46.2 kN |
| Limiting Speeds(Grease Lub.) | — | 490 min-1 |
| Limiting Speeds(Oil Lub.) | — | 750 min-1 |
| D1(Max.) | — | 295 mm |
| D1(Min.) | — | 184 mm |
| D2 | — | - mm |
| D3 | — | - mm |
| A | — | 91 mm |
| R | — | 225 mm |
| C | — | - mm |
| Da(Min.) | — | 251 mm |
| Da(Max.) | — | 229 mm |
| Ra(Max.) | — | 2.5 mm |
| Mass(Refer.) | — | 26.9 kg |
Independent reference comparison based on the manufacturer data currently loaded. Always verify current limits, tolerances and suffix definitions with the official source before engineering selection.