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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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
“NU256” across 5 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 | SKFNU 256 M280 × 500 × 80 mm | FAGNU256-E-M1A280 × 500 × 80 mm | TIMKENNU256EMA280 × 500 × 80 mm | NSKNU256M280 × 500 × 80 mm | KOYONU256280 × 500 × 80 mm |
|---|---|---|---|---|---|
| Comparable specifications | |||||
| Brand | SKF | FAG | TIMKEN | NSK | KOYO |
| Designation | NU 256 M | NU256-E-M1A | NU256EMA | NU256M | NU256 |
| Product family | Cylindrical roller bearings | — | Cylindrical 1-Row | Cylindrical roller bearing | Single-row / NU |
| Detailed type | Single row cylindrical roller bearing, nu design | Cylindrical roller bearings | Cylindrical roller bearings | Cylindrical roller bearings | Cylindrical roller bearings |
| Series | — | NU256 | NCS-841530 | — | — |
| Bore diameterd | 280 mm | 280 mm | 280 mm | 280 mm | 280 mm |
| Outside diameterD | 500 mm | 500 mm | 500 mm | 500 mm | 500 mm |
| WidthB | 80 mm | 80 mm | 80 mm | 80 mm | 80 mm |
| Basic dynamic load ratingC | 1190 kN | 1400 kN | 1540 kN | 1410 kN | 1430 kN |
| Basic static load ratingC0 | 1800 kN | 2020 kN | 1970 kN | 1680 kN | 1680 kN |
| Fatigue load limitPu | 156 kN | 151 kN | — | — | 179 kN |
| Reference speednref | 1400 r/min | 1020 r/min | — | — | — |
| Limiting speednG | 1500 r/min | 2020 r/min | — | — | 1000 r/min |
| Mass≈m | 71.8 kg | 70.7 kg | 69.81 kg | — | 72.7 kg |
| Precision class | — | PN — Normal (ISO 492:2023) | — | — | — |
| Internal clearance | CN | CN (Group N) — Normal internal clearance | — | — | — |
| Sealing | Without | — | Open | — | — |
| Cage | Machined brass | M1A — Two Piece Brass Cage Lip guided | Window Brass cage | Machined brass | — |
| Lubricant | None | — | — | — | — |
| Minimum operating temperatureTmin | — | -30 °C | — | — | — |
| Maximum operating temperatureTmax | — | 150 °C | — | — | — |
| Boundary dimensions | |||||
| Bearing widthB | — | — | — | 80 mm | — |
| Minimum bearing chamferr min. | — | — | — | 5 mm | — |
| Minimum secondary bearing chamferr1 min. | — | — | — | 5 mm | — |
| Roller inscribed circle diameterFw | — | — | — | 340 mm | — |
| Calculation Factors | |||||
| K Factor | — | — | 0.00 | — | — |
| Y1 Factor | — | — | 0.00 | — | — |
| Y2 Factor | — | — | 0.00 | — | — |
| Y0 Factor | — | — | 0.00 | — | — |
| E Factor | — | — | 0.00 | — | — |
| Cg Factor | — | — | 0.1727 | — | — |
| Capabilities & suitability | |||||
| Radial load capacity | — | Yes | — | — | — |
| Suitable for grease lubrication | — | Yes | — | — | — |
| Suitable for oil lubrication | — | Yes | — | — | — |
| Unsealed design | — | Yes | — | — | — |
| Catalogue reference mass | |||||
| Approximate shared-row mass — not separately stated for each rib arrangement | — | — | — | 70.7 kg | — |
| Classification | |||||
| Official Category Path | — | — | — | — | Cylindrical roller bearings - Single-row - NU |
| Official Classification 1 | — | — | — | — | Cylindrical roller bearings / Single-row / NU |
| Construction | |||||
| Single-row construction type | — | — | — | NU | — |
| Rib arrangement | — | — | — | Two outer-ring ribs; ribless inner ring | — |
| Standard cage material | — | — | — | Machined brass | — |
| Standard cage marking | — | — | — | M | — |
| Other cage codes listed for this catalogue row | — | — | — | None listed in this row | — |
| Precision — designation omission rule | — | — | — | ISO Normal when no precision suffix is specified | — |
| Clearance identification — verify interchangeability | — | — | — | No clearance suffix shown. CN omission applies to interchangeable designs; do not infer a numerical clearance. | — |
| Optimized crowning note | — | — | — | No optimized-crowning asterisk on this row | — |
| Dimensions | |||||
| Minimum chamfer dimensionrmin | — | 5 mm | — | — | — |
| Minimum chamfer dimensionrmin | — | 0.197 in | — | — | — |
| Minimum chamfer dimensionr1 min | — | 5 mm | — | — | — |
| Minimum chamfer dimensionr1 min | — | 0.197 in | — | — | — |
| Axial displacements | — | 6.3 mm | — | — | — |
| Axial displacements | — | 0.248 in | — | — | — |
| Raceway diameter outer ringE | — | 449 mm | — | — | — |
| Raceway diameter outer ringE | — | 17.677 in | — | — | — |
| Raceway diameter inner ringF | — | 337 mm | — | — | — |
| Raceway diameter inner ringF | — | 13.268 in | — | — | — |
| Minimum rib diameter outer ringD1 min | — | 426.6 mm | — | — | — |
| Minimum rib diameter outer ringD1 min | — | 16.795 in | — | — | — |
| Engineering — Abutment dimensions | |||||
| Diameter of spacer sleeved a | max. 333 mm | — | — | — | — |
| Diameter of shaft abutmentd b | min. 344 mm | — | — | — | — |
| Diameter of housing abutmentD a | max. 480 mm | — | — | — | — |
| Radius of filletr a | max. 4 mm | — | — | — | — |
| Radius of filletr b | max. 4 mm | — | — | — | — |
| Engineering — Calculation data | |||||
| Minimum load factork r | 0.15 | — | — | — | — |
| Limiting valuee | 0.2 | — | — | — | — |
| Calculation factorY | 0.6 | — | — | — | — |
| Engineering — Dimensions | |||||
| Shoulder diameter of outer ringD 1 | ≈ 417 mm | — | — | — | — |
| Raceway diameter of inner ringF | 340 mm | — | — | — | — |
| Chamfer dimensionr 1,2 | min. 5 mm | — | — | — | — |
| Permissible axial displacements | max. 3.8 mm | — | — | — | — |
| Load ratings — standard cage | |||||
| Basic dynamic radial load ratingCr | — | — | — | 1410000 N | — |
| Basic static radial load ratingC0r | — | — | — | 1680000 N | — |
| Logistics | |||||
| Product net weight | 71.8 kg | — | — | — | — |
| eClass code | 23-05-09-01 | — | — | — | — |
| UNSPSC code | 31171505 | — | — | — | — |
| Lubrication-qualified speed — standard cage | |||||
| Thermal speed rating — oil bath | — | — | — | 1300 r/min | — |
| Mechanical limiting speed — forced oil circulation | — | — | — | Not stated in this catalogue row | — |
| Limiting speed — grease | — | — | — | 1100 r/min | — |
| Limiting speed — oil bath | — | — | — | 1400 r/min | — |
| Main Dimensions & Performance Data | |||||
| Basic dynamic load rating, radialCr | — | 1,400,000 N | — | — | — |
| Basic dynamic load rating, radialCr | — | 314,748.201 lbf | — | — | — |
| Basic static load rating, radialC0r | — | 2,020,000 N | — | — | — |
| Basic static load rating, radialC0r | — | 454,136.691 lbf | — | — | — |
| Fatigue load limit, radialCur | — | 151,000 N | — | — | — |
| Fatigue load limit, radialCur | — | 33,947.842 lbf | — | — | — |
| Manufacturer Identity | |||||
| Schaeffler Product Code | — | 367910 | — | — | — |
| Material Number | — | — | 000000000190051056 | — | — |
| Official Class Key | — | — | — | — | 040-010-000 |
| Base Type | — | NU256 | — | — | — |
| World Assembly Part Number | — | — | NU256EMA | — | — |
| Old Designation | — | ["NU256E.M1A","NU256MA"] | — | — | — |
| Inner Ring Part Number | — | — | 280ARUE02 | — | — |
| Gpsd Group | — | F01 | — | — | — |
| Outer Ring Part Number | — | — | 280ERUE02 | — | — |
| Product Line Id | — | 75 | — | — | — |
| Drawing Number | — | — | M956939 | — | — |
| X Life Marking | — | n.r. | — | — | — |
| Upc | — | — | 0013992257536 | — | — |
| Official Source System | — | — | CORE BP - DS DF | — | — |
| Official Last Run | — | — | 2026-08-23T20:02:48.583 | — | — |
| SAP material number | — | 0192463400000 | — | — | — |
| Base product | — | 2305090102 | — | — | — |
| Mounting dimensions | |||||
| Minimum diameter shaft shoulderda min | — | 300 mm | — | — | — |
| Minimum diameter shaft shoulderda min | — | 11.811 in | — | — | — |
| Maximum diameter of shaft shoulderda max | — | 334 mm | — | — | — |
| Maximum diameter of shaft shoulderda max | — | 13.15 in | — | — | — |
| Minimum shaft shoulderdb min | — | 340 mm | — | — | — |
| Minimum shaft shoulderdb min | — | 13.386 in | — | — | — |
| Maximum diameter of housing shoulderDa max | — | 480 mm | — | — | — |
| Maximum diameter of housing shoulderDa max | — | 18.898 in | — | — | — |
| Maximum recess radiusra max | — | 4 mm | — | — | — |
| Maximum recess radiusra max | — | 0.157 in | — | — | — |
| Maximum recess radiusra1 max | — | 4 mm | — | — | — |
| Maximum recess radiusra1 max | — | 0.157 in | — | — | — |
| Mounting dimensions — shown arrangement | |||||
| Minimum shaft shoulder diameterdb min. | — | — | — | 300 mm | — |
| Maximum housing shoulder diameterDa max. | — | — | — | 480 mm | — |
| Maximum adjusting-ring diameter (NU/NJ arrangement)db max. | — | — | — | 334 mm | — |
| Maximum adjacent fillet radiusra max. | — | — | — | 4 mm | — |
| Maximum secondary adjacent fillet radiusrb max. | — | — | — | 4 mm | — |
| Product characteristics | |||||
| DesignE | — | Increased Capacity Design | — | — | — |
| Radial internal clearanceCN (Group N) | — | Normal internal clearance | — | — | — |
| Tolerance classPN | — | Normal (ISO 492:2023) | — | — | — |
| Number of rows1 | — | Single-row design | — | — | — |
| 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 | — | — | — | — |
| Product Identity | |||||
| Construction | — | Cylindrical roller bearing NU..-E-M1A, with cage, single row, non-locating bearing, 2 ribs on outer ring, 0 ribs on inner ring (smooth), type NU, Running accuracy in P6 | Single Row Cylindrical Roller Bearing | Imperial Series | 11.0236 in Bore | 19.6850 in OD | 3.1496 in Width | Open | Cylindrical Bore | Machined Window Brass Cage | C0 Clearance | — | — |
| Type Description | — | — | Cylindrical 1-Row | — | — |
| Short Description | — | Cylindrical roller bearing | — | — | — |
| Number Of Rows | 1 | — | 1 | — | — |
| Tapered Bore | — | — | N | — | — |
| Properties | |||||
| Bearing part | Complete bearing | — | — | — | — |
| Axial displacement capability | In both directions | — | — | — | — |
| Locating feature, bearing outer ring | Without | — | — | — | — |
| Bore type | Cylindrical | — | — | — | — |
| Number of flanges, outer ring | 2 | — | — | — | — |
| Number of flanges, inner ring | 0 | — | — | — | — |
| 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 | 266.0 kg CO 2 e | — | — | — | — |
| Indicative carbon footprint for remanufactured product | 88.3 kg CO 2 e | — | — | — | — |
| Technical Data | |||||
| d | — | — | — | — | 500 mm |
| B | — | — | — | — | 80 mm |
| R(Min.) | — | — | — | — | 5 mm |
| R1(Min.) | — | — | — | — | 5 mm |
| Bore Diameter (D) | — | 280 mm | — | — | — |
| Overall Width | — | — | 0.000 mm | — | — |
| Fw | — | — | — | — | 340 mm |
| Outside Diamater (D) | — | 500 mm | — | — | — |
| Radial Rating | — | — | 1,540,000 N | — | — |
| Ew | — | — | — | — | - mm |
| Total Width (B) | — | 80 mm | — | — | — |
| Axial Rating | — | — | 0 N | — | — |
| Basic Load Ratings : Cr | — | — | — | — | 1430 kN |
| Basic Dynamic Load Rating, Radial (Cr) | — | 1,400,000 N | — | — | — |
| Dynamic Rating C1 | — | — | 1,540,000 N | — | — |
| Basic Load Ratings : C0R | — | — | — | — | 1680 kN |
| Basic Static Load Rating, Radial (C0R) | — | 2,020,000 N | — | — | — |
| Dynamic Rating C90 | — | — | 0 N | — | — |
| Fatigue Load Limit : Cu | — | — | — | — | 179 kN |
| Raceway Diameter Inner Ring (F) | — | 337 mm | — | — | — |
| Dynamic Axial Rating Ca90 | — | — | 0 N | — | — |
| Limiting Speeds(Grease Lub.) | — | — | — | — | 1000 min-1 |
| Operating Temperature Min. (Tmin) | — | -30 °C | — | — | — |
| Dynamic Axial Rating Ca1 | — | — | 0 N | — | — |
| Limiting Speeds(Oil Lub.) | — | — | — | — | 1200 min-1 |
| Minimum Diameter Shaft Shoulder (Da) | — | 300 mm | — | — | — |
| Static Radial Rating C0 | — | — | 1,970,000 N | — | — |
| Sd1 | — | — | — | — | - mm |
| Operating Temperature Max. (Tmax) | — | 150 °C | — | — | — |
| Extended Dynamic Rating Ce | — | — | 0 N | — | — |
| B1 | — | — | — | — | - mm |
| Limiting Speed (Limiting Spe) | — | 2,020 1/min | — | — | — |
| Static Axial Rating C0A | — | — | 0 N | — | — |
| B2 | — | — | — | — | - mm |
| Reference Speed (Nϑr) | — | 1,020 1/min | — | — | — |
| Da(Min.) | — | — | — | — | - mm |
| Maximum Recess Radius (Ra Max) | — | 4 mm | — | — | — |
| Db(Min.) | — | — | — | — | - mm |
| Maximum Diameter Of Housing Shoulder (Da) | — | 480 mm | — | — | — |
| Db(Max.) | — | — | — | — | - mm |
| Minimum Chamfer Dimension (R1 Min) | — | 5 mm | — | — | — |
| Dc(Min.) | — | — | — | — | - mm |
| Axial Displacement (S) | — | 6.3 mm | — | — | — |
| Dd(Min.) | — | — | — | — | - mm |
| Minimum Rib Diameter Outer Ring (D1 Min) | — | 426.6 mm | — | — | — |
| Da(Max.) | — | — | — | — | 480 mm |
| Maximum Diameter Of Shaft Shoulder (Da Max) | — | 334 mm | — | — | — |
| Maximum Recess Radius (Ra1 Max) | — | 4 mm | — | — | — |
| Minimum Chamfer Dimension (Rmin) | — | 5 mm | — | — | — |
| Ra(Max.) | — | — | — | — | 4 mm |
| Raceway Diameter Outer Ring (E) | — | 449 mm | — | — | — |
| Rb(Max.) | — | — | — | — | 4 mm |
| Minimum Shaft Shoulder (Db Min) | — | 340 mm | — | — | — |
| Mass(Refer.) | — | — | — | — | 72.7 kg |
| Fatigue Load Limit, Radial (Cur) | — | 151,000 N | — | — | — |
| Temperature range | |||||
| Operating temperature min.Tmin | — | -30 °C | — | — | — |
| Operating temperature min.Tmin | — | -22 °F | — | — | — |
| Operating temperature max.Tmax | — | 150 °C | — | — | — |
| Operating temperature max.Tmax | — | 302 °F | — | — | — |
Automatic matching is a search aid, not an interchangeability declaration. Confirm the full suffix, tolerances, internal design and application limits before substitution.