Cross-brand designation analysis
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“NU421” 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 | SKFNU 421 M105 × 260 × 60 mm | FAGNU421-XL-M1105 × 260 × 60 mm | KOYONU421105 × 260 × 60 mm |
|---|---|---|---|
| Comparable specifications | |||
| Brand | SKF | FAG | KOYO |
| Designation | NU 421 M | NU421-XL-M1 | NU421 |
| Product family | Cylindrical roller bearings | — | Single-row / NU |
| Detailed type | Single row cylindrical roller bearing, nu design | Cylindrical roller bearings | Cylindrical roller bearings |
| Series | — | NU421 | — |
| Bore diameterd | 105 mm | 105 mm | 105 mm |
| Outside diameterD | 260 mm | 260 mm | 260 mm |
| WidthB | 60 mm | 60 mm | 60 mm |
| Basic dynamic load ratingC | 501 kN | 610 kN | 581 kN |
| Basic static load ratingC0 | 570 kN | 590 kN | 510 kN |
| Fatigue load limitPu | 64 kN | 71 kN | 67.6 kN |
| Reference speednref | 2800 r/min | 2750 r/min | — |
| Limiting speednG | 3400 r/min | 4750 r/min | 2400 r/min |
| Mass≈m | 17.4 kg | 17.4 kg | 19.1 kg |
| Precision class | — | PN — Normal (ISO 492:2023) | — |
| Internal clearance | CN | CN (Group N) — Normal internal clearance | — |
| Sealing | Without | — | — |
| Cage | Machined brass | M1 — Two Piece Brass Cage Roller Guided | — |
| Lubricant | None | — | — |
| Minimum operating temperatureTmin | — | -30 °C | — |
| Maximum operating temperatureTmax | — | 150 °C | — |
| Capabilities & suitability | |||
| Radial load capacity | — | Yes | — |
| Suitable for grease lubrication | — | Yes | — |
| Suitable for oil lubrication | — | Yes | — |
| Unsealed design | — | Yes | — |
| Classification | |||
| Official Category Path | — | — | Cylindrical roller bearings - Single-row - NU |
| Official Classification 1 | — | — | Cylindrical roller bearings / Single-row / NU |
| Dimensions | |||
| Minimum chamfer dimensionrmin | — | 4 mm | — |
| Minimum chamfer dimensionrmin | — | 0.157 in | — |
| Minimum chamfer dimensionr1 min | — | 4 mm | — |
| Minimum chamfer dimensionr1 min | — | 0.157 in | — |
| Axial displacements | — | 5.7 mm | — |
| Axial displacements | — | 0.224 in | — |
| Raceway diameter outer ringE | — | 220.5 mm | — |
| Raceway diameter outer ringE | — | 8.681 in | — |
| Raceway diameter inner ringF | — | 144.5 mm | — |
| Raceway diameter inner ringF | — | 5.689 in | — |
| Minimum rib diameter outer ringD1 min | — | 207.4 mm | — |
| Minimum rib diameter outer ringD1 min | — | 8.165 in | — |
| Engineering — Abutment dimensions | |||
| Diameter of spacer sleeved a | max. 140 mm | — | — |
| Diameter of shaft abutmentd b | min. 147 mm | — | — |
| Diameter of housing abutmentD a | max. 241 mm | — | — |
| Radius of filletr a | max. 3 mm | — | — |
| Radius of filletr b | max. 3 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 | ≈ 206.3 mm | — | — |
| Raceway diameter of inner ringF | 144.5 mm | — | — |
| Chamfer dimensionr 1,2 | min. 4 mm | — | — |
| Chamfer dimensionr 3,4 | min. 4 mm | — | — |
| Permissible axial displacements | max. 4.9 mm | — | — |
| Logistics | |||
| Product net weight | 17.4 kg | — | — |
| eClass code | 23-05-09-01 | — | — |
| UNSPSC code | 31171505 | — | — |
| Main Dimensions & Performance Data | |||
| Basic dynamic load rating, radialCr | — | 610,000 N | — |
| Basic dynamic load rating, radialCr | — | 137,140.288 lbf | — |
| Basic static load rating, radialC0r | — | 590,000 N | — |
| Basic static load rating, radialC0r | — | 132,643.885 lbf | — |
| Fatigue load limit, radialCur | — | 71,000 N | — |
| Fatigue load limit, radialCur | — | 15,962.23 lbf | — |
| Manufacturer Identity | |||
| Schaeffler Product Code | — | 369412 | — |
| Official Class Key | — | — | 040-010-000 |
| Base Type | — | NU421 | — |
| Old Designation | — | ["NU421-M1","NU421M1"] | — |
| Gpsd Group | — | F01 | — |
| Product Line Id | — | 63 | — |
| X Life Marking | — | XL | — |
| SAP material number | — | 0167406610000 | — |
| Base product | — | 2305090102 | — |
| Bearing X designation | — | NU421-XL-M1 | — |
| Mounting Manager ID | — | NU421-XL-M1 | — |
| Grease application ID | — | NU421-XL-M1 | — |
| Mounting dimensions | |||
| Minimum diameter shaft shoulderda min | — | 125 mm | — |
| Minimum diameter shaft shoulderda min | — | 4.921 in | — |
| Maximum diameter of shaft shoulderda max | — | 143 mm | — |
| Maximum diameter of shaft shoulderda max | — | 5.63 in | — |
| Minimum shaft shoulderdb min | — | 147 mm | — |
| Minimum shaft shoulderdb min | — | 5.787 in | — |
| Maximum diameter of housing shoulderDa max | — | 240 mm | — |
| Maximum diameter of housing shoulderDa max | — | 9.449 in | — |
| Maximum recess radiusra max | — | 3 mm | — |
| Maximum recess radiusra max | — | 0.118 in | — |
| Maximum recess radiusra1 max | — | 3 mm | — |
| Maximum recess radiusra1 max | — | 0.118 in | — |
| Product characteristics | |||
| Design | — | Standard | — |
| 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 | No | — | — |
| Product Identity | |||
| Construction | — | Cylindrical roller bearing NU..-XL-M1, with cage, single row, non-locating bearing, 2 ribs on outer ring, 0 ribs on inner ring (smooth), type NU, Running accuracy in P6 | — |
| Short Description | — | Cylindrical roller bearing | — |
| Properties | |||
| Bearing part | Complete bearing | — | — |
| Axial displacement capability | In both directions | — | — |
| Number of rows | 1 | — | — |
| 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 | — | — |
| Indicative carbon footprint for new product | 64.5 kg CO 2 e | — | — |
| Technical Data | |||
| d | — | — | 260 mm |
| B | — | — | 60 mm |
| R(Min.) | — | — | 4 mm |
| R1(Min.) | — | — | 4 mm |
| Bore Diameter (D) | — | 105 mm | — |
| Fw | — | — | 144.5 mm |
| Outside Diamater (D) | — | 260 mm | — |
| Ew | — | — | - mm |
| Total Width (B) | — | 60 mm | — |
| Basic Load Ratings : Cr | — | — | 581 kN |
| Basic Dynamic Load Rating, Radial (Cr) | — | 610,000 N | — |
| Basic Load Ratings : C0R | — | — | 510 kN |
| Basic Static Load Rating, Radial (C0R) | — | 590,000 N | — |
| Fatigue Load Limit : Cu | — | — | 67.6 kN |
| Raceway Diameter Inner Ring (F) | — | 144.5 mm | — |
| Limiting Speeds(Grease Lub.) | — | — | 2400 min-1 |
| Operating Temperature Min. (Tmin) | — | -30 °C | — |
| Limiting Speeds(Oil Lub.) | — | — | 3100 min-1 |
| Minimum Diameter Shaft Shoulder (Da) | — | 125 mm | — |
| Sd1 | — | — | - mm |
| Operating Temperature Max. (Tmax) | — | 150 °C | — |
| B1 | — | — | - mm |
| Limiting Speed (Limiting Spe) | — | 4,750 1/min | — |
| B2 | — | — | - mm |
| Reference Speed (Nϑr) | — | 2,750 1/min | — |
| Da(Min.) | — | — | - mm |
| Maximum Recess Radius (Ra Max) | — | 3 mm | — |
| Db(Min.) | — | — | - mm |
| Maximum Diameter Of Housing Shoulder (Da) | — | 240 mm | — |
| Db(Max.) | — | — | - mm |
| Minimum Chamfer Dimension (R1 Min) | — | 4 mm | — |
| Dc(Min.) | — | — | - mm |
| Axial Displacement (S) | — | 5.7 mm | — |
| Dd(Min.) | — | — | - mm |
| Minimum Rib Diameter Outer Ring (D1 Min) | — | 207.4 mm | — |
| Da(Max.) | — | — | 244 mm |
| Maximum Diameter Of Shaft Shoulder (Da Max) | — | 143 mm | — |
| Maximum Recess Radius (Ra1 Max) | — | 3 mm | — |
| Minimum Chamfer Dimension (Rmin) | — | 4 mm | — |
| Ra(Max.) | — | — | 3 mm |
| Raceway Diameter Outer Ring (E) | — | 220.5 mm | — |
| Rb(Max.) | — | — | 3 mm |
| Minimum Shaft Shoulder (Db Min) | — | 147 mm | — |
| Mass(Refer.) | — | — | 19.1 kg |
| Fatigue Load Limit, Radial (Cur) | — | 71,000 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.