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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“NU221” 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 221 ECJ105 × 190 × 36 mm | FAGNU221-E-XL-M1105 × 190 × 36 mm | NSKNU221EM105 × 190 × 36 mm |
|---|---|---|---|
| Comparable specifications | |||
| Brand | SKF | FAG | NSK |
| Designation | NU 221 ECJ | NU221-E-XL-M1 | NU221EM |
| Product family | Cylindrical roller bearings | — | Cylindrical roller bearing |
| Detailed type | Single row cylindrical roller bearing, nu design | Cylindrical roller bearings | Cylindrical roller bearings |
| Series | — | NU221 | — |
| Bore diameterd | 105 mm | 105 mm | 105 mm |
| Outside diameterD | 190 mm | 190 mm | 190 mm |
| WidthB | 36 mm | 36 mm | 36 mm |
| Basic dynamic load ratingC | 300 kN | 310 kN | 320 kN |
| Basic static load ratingC0 | 315 kN | 320 kN | 310 kN |
| Fatigue load limitPu | 36.5 kN | 41.5 kN | — |
| Reference speednref | 3800 r/min | 3400 r/min | — |
| Limiting speednG | 4300 r/min | 6500 r/min | — |
| Mass≈m | 3.97 kg | 4.46 kg | — |
| Precision class | — | PN — Normal (ISO 492:2023) | — |
| Internal clearance | CN | CN (Group N) — Normal internal clearance | — |
| Sealing | Without | — | — |
| Cage | Sheet metal | M1 — Two Piece Brass Cage Roller Guided | Machined brass |
| Lubricant | None | — | — |
| Minimum operating temperatureTmin | — | -30 °C | — |
| Maximum operating temperatureTmax | — | 150 °C | — |
| Boundary dimensions | |||
| Bearing widthB | — | — | 36 mm |
| Minimum bearing chamferr min. | — | — | 2.1 mm |
| Minimum secondary bearing chamferr1 min. | — | — | 2.1 mm |
| Roller inscribed circle diameterFw | — | — | 125 mm |
| 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 | — | — | 4.58 kg |
| 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 | — | — | Catalogue asterisk: optimized crowning may be available; not verified as fitted |
| Dimensions | |||
| Minimum chamfer dimensionrmin | — | 2.1 mm | — |
| Minimum chamfer dimensionrmin | — | 0.083 in | — |
| Minimum chamfer dimensionr1 min | — | 2.1 mm | — |
| Minimum chamfer dimensionr1 min | — | 0.083 in | — |
| Axial displacements | — | 1.3 mm | — |
| Axial displacements | — | 0.051 in | — |
| Raceway diameter outer ringE | — | 171.5 mm | — |
| Raceway diameter outer ringE | — | 6.752 in | — |
| Raceway diameter inner ringF | — | 125.5 mm | — |
| Raceway diameter inner ringF | — | 4.941 in | — |
| Minimum rib diameter outer ringD1 min | — | 165.12 mm | — |
| Minimum rib diameter outer ringD1 min | — | 6.501 in | — |
| Engineering — Abutment dimensions | |||
| Diameter of spacer sleeved a | max. 122 mm | — | — |
| Diameter of shaft abutmentd b | min. 128 mm | — | — |
| Diameter of housing abutmentD a | max. 177.3 mm | — | — |
| Radius of filletr a | max. 2 mm | — | — |
| Radius of filletr b | max. 2 mm | — | — |
| Engineering — Associated products | |||
| Angle ring | HJ 221 EC | — | — |
| Engineering — Calculation data | |||
| SKF performance class | SKF Explorer | — | — |
| Minimum load factork r | 0.15 | — | — |
| Limiting valuee | 0.2 | — | — |
| Calculation factorY | 0.6 | — | — |
| Engineering — Dimensions | |||
| Shoulder diameter of outer ringD 1 | ≈ 164.2 mm | — | — |
| Raceway diameter of inner ringF | 125 mm | — | — |
| Chamfer dimensionr 1,2 | min. 2.1 mm | — | — |
| Chamfer dimensionr 3,4 | min. 2.1 mm | — | — |
| Permissible axial displacements | max. 2 mm | — | — |
| Load ratings — standard cage | |||
| Basic dynamic radial load ratingCr | — | — | 320000 N |
| Basic static radial load ratingC0r | — | — | 310000 N |
| Logistics | |||
| Product net weight | 3.97 kg | — | — |
| eClass code | 23-05-09-01 | — | — |
| UNSPSC code | 31171505 | — | — |
| Lubrication-qualified speed — standard cage | |||
| Thermal speed rating — oil bath | — | — | 4300 r/min |
| Mechanical limiting speed — forced oil circulation | — | — | 6000 r/min |
| Limiting speed — grease | — | — | 3400 r/min |
| Limiting speed — oil bath | — | — | 4000 r/min |
| Main Dimensions & Performance Data | |||
| Basic dynamic load rating, radialCr | — | 310,000 N | — |
| Basic dynamic load rating, radialCr | — | 69,694.245 lbf | — |
| Basic static load rating, radialC0r | — | 320,000 N | — |
| Basic static load rating, radialC0r | — | 71,942.446 lbf | — |
| Fatigue load limit, radialCur | — | 41,500 N | — |
| Fatigue load limit, radialCur | — | 9,330.036 lbf | — |
| Manufacturer Identity | |||
| Schaeffler Product Code | — | 368067 | — |
| Base Type | — | NU221 | — |
| Old Designation | — | ["NU221-E-M1","NU221E.M1"] | — |
| Gpsd Group | — | F01 | — |
| Product Line Id | — | 63 | — |
| X Life Marking | — | XL | — |
| SAP material number | — | 0192419760000 | — |
| Base product | — | 2305090102 | — |
| Bearing X designation | — | NU221-E-XL-M1 | — |
| Mounting Manager ID | — | NU221-E-XL-M1 | — |
| Grease application ID | — | NU221-E-XL-M1 | — |
| Mounting dimensions | |||
| Minimum diameter shaft shoulderda min | — | 117 mm | — |
| Minimum diameter shaft shoulderda min | — | 4.606 in | — |
| Maximum diameter of shaft shoulderda max | — | 123 mm | — |
| Maximum diameter of shaft shoulderda max | — | 4.843 in | — |
| Minimum shaft shoulderdb min | — | 128 mm | — |
| Minimum shaft shoulderdb min | — | 5.039 in | — |
| Maximum diameter of housing shoulderDa max | — | 178 mm | — |
| Maximum diameter of housing shoulderDa max | — | 7.008 in | — |
| Maximum recess radiusra max | — | 2 mm | — |
| Maximum recess radiusra max | — | 0.079 in | — |
| Maximum recess radiusra1 max | — | 2 mm | — |
| Maximum recess radiusra1 max | — | 0.079 in | — |
| Mounting dimensions — shown arrangement | |||
| Minimum shaft shoulder diameterdb min. | — | — | 116 mm |
| Maximum housing shoulder diameterDa max. | — | — | 179 mm |
| Maximum adjusting-ring diameter (NU/NJ arrangement)db max. | — | — | 121 mm |
| Maximum adjacent fillet radiusra max. | — | — | 2 mm |
| Maximum secondary adjacent fillet radiusrb max. | — | — | 2 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 | No | — | — |
| Product Identity | |||
| Construction | — | Cylindrical roller bearing NU..-E-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 | 14.7 kg CO 2 e | — | — |
| Technical Data | |||
| Bore Diameter (D) | — | 105 mm | — |
| Outside Diamater (D) | — | 190 mm | — |
| Total Width (B) | — | 36 mm | — |
| Basic Dynamic Load Rating, Radial (Cr) | — | 310,000 N | — |
| Basic Static Load Rating, Radial (C0R) | — | 320,000 N | — |
| Raceway Diameter Inner Ring (F) | — | 125.5 mm | — |
| Operating Temperature Min. (Tmin) | — | -30 °C | — |
| Minimum Diameter Shaft Shoulder (Da) | — | 117 mm | — |
| Operating Temperature Max. (Tmax) | — | 150 °C | — |
| Limiting Speed (Limiting Spe) | — | 6,500 1/min | — |
| Reference Speed (Nϑr) | — | 3,400 1/min | — |
| Maximum Recess Radius (Ra Max) | — | 2 mm | — |
| Maximum Diameter Of Housing Shoulder (Da) | — | 178 mm | — |
| Minimum Chamfer Dimension (R1 Min) | — | 2.1 mm | — |
| Axial Displacement (S) | — | 1.3 mm | — |
| Minimum Rib Diameter Outer Ring (D1 Min) | — | 165.12 mm | — |
| Maximum Diameter Of Shaft Shoulder (Da Max) | — | 123 mm | — |
| Maximum Recess Radius (Ra1 Max) | — | 2 mm | — |
| Minimum Chamfer Dimension (Rmin) | — | 2.1 mm | — |
| Raceway Diameter Outer Ring (E) | — | 171.5 mm | — |
| Minimum Shaft Shoulder (Db Min) | — | 128 mm | — |
| Fatigue Load Limit, Radial (Cur) | — | 41,500 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.