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| Parameter | SKFNJ 2252 MA260 × 480 × 130 mm | KOYONJ2252260 × 480 × 130 mm |
|---|---|---|
| Comparable specifications | ||
| Brand | SKF | KOYO |
| Designation | NJ 2252 MA | NJ2252 |
| Product family | Cylindrical roller bearings | Single-row / NJ |
| Detailed type | Single row cylindrical roller bearing, nj design | Cylindrical roller bearings |
| Bore diameterd | 260 mm | 260 mm |
| Outside diameterD | 480 mm | 480 mm |
| WidthB | 130 mm | 130 mm |
| Basic dynamic load ratingC | 1790 kN | 2240 kN |
| Basic static load ratingC0 | 3000 kN | 2950 kN |
| Fatigue load limitPu | 265 kN | 305 kN |
| Reference speednref | 1300 r/min | — |
| Limiting speednG | 2000 r/min | 990 r/min |
| Mass≈m | 112 kg | 110 kg |
| Internal clearance | CN | — |
| Sealing | Without | — |
| Lubricant | None | — |
| Classification | ||
| Official Category Path | — | Cylindrical roller bearings - Single-row - NJ |
| Official Classification 1 | — | Cylindrical roller bearings / Single-row / NJ |
| Engineering — Abutment dimensions | ||
| Diameter of spacer sleeved a | max. 309 mm | — |
| Diameter of shaft abutmentd b | min. 344 mm | — |
| Diameter of housing abutmentD a | max. 460 mm | — |
| Radius of filletr a | max. 4 mm | — |
| Engineering — Calculation data | ||
| Minimum load factork r | 0.3 | — |
| Limiting valuee | 0.3 | — |
| Calculation factorY | 0.4 | — |
| Engineering — Dimensions | ||
| Shoulder diameter of inner ringd 1 | ≈ 340 mm | — |
| Shoulder diameter of outer ringD 1 | ≈ 397 mm | — |
| Raceway diameter of inner ringF | 320 mm | — |
| Chamfer dimensionr 1,2 | min. 5 mm | — |
| Permissible axial displacements | max. 4.3 mm | — |
| Logistics | ||
| Product net weight | 112.0 kg | — |
| eClass code | 23-05-09-01 | — |
| UNSPSC code | 31171505 | — |
| Manufacturer Identity | ||
| Official Class Key | — | 040-010-000 |
| Product identity | ||
| Official product category | Cylindrical roller bearings | — |
| Official taxonomy path | /products/rolling-bearings/roller-bearings/cylindrical-roller-bearings/single-row-cylindrical-roller-bearings | — |
| Structure group ID | BC1_001_101 | — |
| Available from SKF | Yes | — |
| Remanufacturable | Yes | — |
| Properties | ||
| Bearing part | Complete bearing | — |
| Axial displacement capability | In one direction | — |
| Number of rows | 1 | — |
| Locating feature, bearing outer ring | Without | — |
| Bore type | Cylindrical | — |
| Number of flanges, outer ring | 2 | — |
| Number of flanges, inner ring | 1 | — |
| Loose flange | None | — |
| Radial internal clearance | CN | — |
| Tolerance class | Normal | — |
| Coating | Without | — |
| Relubrication feature | Without | — |
| Candidate for remanufacturing | Yes | — |
| Indicative carbon footprint for new product | 416.0 kg CO 2 e | — |
| Indicative carbon footprint for remanufactured product | 138.0 kg CO 2 e | — |
| Technical Data | ||
| d | — | 480 mm |
| B | — | 130 mm |
| R(Min.) | — | 5 mm |
| R1(Min.) | — | 5 mm |
| Fw | — | 320 mm |
| Ew | — | - mm |
| Basic Load Ratings : Cr | — | 2240 kN |
| Basic Load Ratings : C0R | — | 2950 kN |
| Fatigue Load Limit : Cu | — | 305 kN |
| Limiting Speeds(Grease Lub.) | — | 990 min-1 |
| Limiting Speeds(Oil Lub.) | — | 1300 min-1 |
| Sd1 | — | - mm |
| B1 | — | - mm |
| B2 | — | - mm |
| Da(Min.) | — | - mm |
| Db(Min.) | — | - mm |
| Db(Max.) | — | - mm |
| Dc(Min.) | — | - mm |
| Dd(Min.) | — | - mm |
| Da(Max.) | — | 460 mm |
| Ra(Max.) | — | 4 mm |
| Rb(Max.) | — | 4 mm |
| Mass(Refer.) | — | 110 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.