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
“NU338” 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 338 ECM190 × 400 × 78 mm | FAGNU338-E-TB-M1190 × 400 × 78 mm | TIMKENNU338EMA190 × 400 × 78 mm | NSKNU338EM190 × 400 × 78 mm | KOYONU338190 × 400 × 78 mm |
|---|---|---|---|---|---|
| Comparable specifications | |||||
| Brand | SKF | FAG | TIMKEN | NSK | KOYO |
| Designation | NU 338 ECM | NU338-E-TB-M1 | NU338EMA | NU338EM | NU338 |
| 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 | — | NU338 | EX27728 | — | — |
| Bore diameterd | 190 mm | 190 mm | 190 mm | 190 mm | 190 mm |
| Outside diameterD | 400 mm | 400 mm | 400 mm | 400 mm | 400 mm |
| WidthB | 78 mm | 78 mm | 78 mm | 78 mm | 78 mm |
| Basic dynamic load ratingC | 1140 kN | 1120 kN | 1300 kN | 1300 kN | 1220 kN |
| Basic static load ratingC0 | 1500 kN | 1440 kN | 1500 kN | 1340 kN | 1260 kN |
| Fatigue load limitPu | 143 kN | 110 kN | — | — | 146 kN |
| Reference speednref | 1500 r/min | 1400 r/min | — | — | — |
| Limiting speednG | 2000 r/min | 2550 r/min | — | — | 1300 r/min |
| Mass≈m | 50 kg | 49.82 kg | 49.4 kg | — | 49.9 kg |
| Precision class | — | PN — Normal (ISO 492:2023) | — | — | — |
| Internal clearance | CN | CN (Group N) — Normal internal clearance | — | — | — |
| Sealing | Without | — | Open | — | — |
| Cage | Machined brass | M1 — Two Piece Brass Cage Roller Guided | Window Brass cage | Machined brass | — |
| Lubricant | None | — | — | — | — |
| Minimum operating temperatureTmin | — | -30 °C | — | — | — |
| Maximum operating temperatureTmax | — | 150 °C | — | — | — |
| Boundary dimensions | |||||
| Bearing widthB | — | — | — | 78 mm | — |
| Minimum bearing chamferr min. | — | — | — | 5 mm | — |
| Minimum secondary bearing chamferr1 min. | — | — | — | 5 mm | — |
| Roller inscribed circle diameterFw | — | — | — | 245 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 | — | — | 0.1426 | — | — |
| Capabilities & suitability | |||||
| Radial load capacity | — | Yes | — | — | — |
| Suitable for grease lubrication | — | Yes | — | — | — |
| Suitable for oil lubrication | — | Yes | — | — | — |
| Unsealed design | — | Yes | — | — | — |
| Largebearing | — | Yes | — | — | — |
| Catalogue reference mass | |||||
| Approximate shared-row mass — not separately stated for each rib arrangement | — | — | — | 50.6 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 | — | 353 mm | — | — | — |
| Raceway diameter outer ringE | — | 13.898 in | — | — | — |
| Raceway diameter inner ringF | — | 245 mm | — | — | — |
| Raceway diameter inner ringF | — | 9.646 in | — | — | — |
| Minimum rib diameter outer ringD1 min | — | 331.4 mm | — | — | — |
| Minimum rib diameter outer ringD1 min | — | 13.047 in | — | — | — |
| Engineering — Abutment dimensions | |||||
| Diameter of spacer sleeved a | max. 240 mm | — | — | — | — |
| Diameter of shaft abutmentd b | min. 249 mm | — | — | — | — |
| Diameter of housing abutmentD a | max. 380 mm | — | — | — | — |
| Radius of filletr a | max. 4 mm | — | — | — | — |
| Radius of filletr b | max. 4 mm | — | — | — | — |
| Engineering — Associated products | |||||
| Angle ring | HJ 338 EC | — | — | — | — |
| 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 | ≈ 336.3 mm | — | — | — | — |
| Raceway diameter of inner ringF | 245 mm | — | — | — | — |
| Chamfer dimensionr 1,2 | min. 5 mm | — | — | — | — |
| Chamfer dimensionr 3,4 | min. 5 mm | — | — | — | — |
| Permissible axial displacements | max. 4.3 mm | — | — | — | — |
| Load ratings — standard cage | |||||
| Basic dynamic radial load ratingCr | — | — | — | 1300000 N | — |
| Basic static radial load ratingC0r | — | — | — | 1340000 N | — |
| Logistics | |||||
| Product net weight | 50.0 kg | — | — | — | — |
| eClass code | 23-05-09-01 | — | — | — | — |
| UNSPSC code | 31171505 | — | — | — | — |
| Lubrication-qualified speed — standard cage | |||||
| Thermal speed rating — oil bath | — | — | — | 1600 r/min | — |
| Mechanical limiting speed — forced oil circulation | — | — | — | 2600 r/min | — |
| Limiting speed — grease | — | — | — | 1400 r/min | — |
| Limiting speed — oil bath | — | — | — | 1700 r/min | — |
| Main Dimensions & Performance Data | |||||
| Basic dynamic load rating, radialCr | — | 1,120,000 N | — | — | — |
| Basic dynamic load rating, radialCr | — | 251,798.561 lbf | — | — | — |
| Basic static load rating, radialC0r | — | 1,440,000 N | — | — | — |
| Basic static load rating, radialC0r | — | 323,741.007 lbf | — | — | — |
| Fatigue load limit, radialCur | — | 110,000 N | — | — | — |
| Fatigue load limit, radialCur | — | 24,730.216 lbf | — | — | — |
| Manufacturer Identity | |||||
| Schaeffler Product Code | — | 371031 | — | — | — |
| Material Number | — | — | 000000000190019428 | — | — |
| Official Class Key | — | — | — | — | 040-010-000 |
| Base Type | — | NU338 | — | — | — |
| World Assembly Part Number | — | — | NU338EMA | — | — |
| Gpsd Group | — | F01 | — | — | — |
| Inner Ring Part Number | — | — | 190ARUE03 | — | — |
| Product Line Id | — | 75 | — | — | — |
| Outer Ring Part Number | — | — | 190ERUE03 | — | — |
| Drawing Number | — | — | M103410 | — | — |
| Upc | — | — | 0053893774312 | — | — |
| Official Source System | — | — | CORE BP - DS DF | — | — |
| Official Last Run | — | — | 2026-08-23T20:02:48.583 | — | — |
| SAP material number | — | 0800898790000 | — | — | — |
| Base product | — | 2305090102 | — | — | — |
| Bearing X designation | — | NU338-E-TB-M1 | — | — | — |
| Mounting Manager ID | — | NU338-E-TB-M1 | — | — | — |
| Grease application ID | — | NU338-E-TB-M1 | — | — | — |
| Mounting dimensions | |||||
| Minimum diameter shaft shoulderda min | — | 210 mm | — | — | — |
| Minimum diameter shaft shoulderda min | — | 8.268 in | — | — | — |
| Maximum diameter of shaft shoulderda max | — | 242 mm | — | — | — |
| Maximum diameter of shaft shoulderda max | — | 9.528 in | — | — | — |
| Minimum shaft shoulderdb min | — | 248 mm | — | — | — |
| Minimum shaft shoulderdb min | — | 9.764 in | — | — | — |
| Maximum diameter of housing shoulderDa max | — | 380 mm | — | — | — |
| Maximum diameter of housing shoulderDa max | — | 14.961 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. | — | — | — | 210 mm | — |
| Maximum housing shoulder diameterDa max. | — | — | — | 380 mm | — |
| Maximum adjusting-ring diameter (NU/NJ arrangement)db max. | — | — | — | 240 mm | — |
| Maximum adjacent fillet radiusra max. | — | — | — | 4 mm | — |
| Maximum secondary adjacent fillet radiusrb max. | — | — | — | 4 mm | — |
| Product characteristics | |||||
| DesignTB | — | Bearings with increased axial load capacity | — | — | — |
| 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 NU20..-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 | Single Row Cylindrical Roller Bearing | Imperial Series | 7.4803 in Bore | 15.7480 in OD | 3.0709 in Width | Open | Cylindrical Bore | Machined Window Brass Cage | C0 Clearance | — | — |
| Short Description | — | Cylindrical roller bearing | — | — | — |
| Type Description | — | — | Cylindrical 1-Row | — | — |
| 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 | 185.0 kg CO 2 e | — | — | — | — |
| Indicative carbon footprint for remanufactured product | 61.5 kg CO 2 e | — | — | — | — |
| Technical Data | |||||
| d | — | — | — | — | 400 mm |
| B | — | — | — | — | 78 mm |
| Bore Diameter (D) | — | 190 mm | — | — | — |
| R(Min.) | — | — | — | — | 5 mm |
| Outside Diamater (D) | — | 400 mm | — | — | — |
| R1(Min.) | — | — | — | — | 5 mm |
| Total Width (B) | — | 78 mm | — | — | — |
| Overall Width | — | — | 0.000 mm | — | — |
| Fw | — | — | — | — | 245 mm |
| Basic Dynamic Load Rating, Radial (Cr) | — | 1,120,000 N | — | — | — |
| Radial Rating | — | — | 1,300,000 N | — | — |
| Ew | — | — | — | — | - mm |
| Basic Static Load Rating, Radial (C0R) | — | 1,440,000 N | — | — | — |
| Axial Rating | — | — | 0 N | — | — |
| Basic Load Ratings : Cr | — | — | — | — | 1220 kN |
| Raceway Diameter Inner Ring (F) | — | 245 mm | — | — | — |
| Dynamic Rating C1 | — | — | 1,300,000 N | — | — |
| Basic Load Ratings : C0R | — | — | — | — | 1260 kN |
| Operating Temperature Min. (Tmin) | — | -30 °C | — | — | — |
| Dynamic Rating C90 | — | — | 0 N | — | — |
| Fatigue Load Limit : Cu | — | — | — | — | 146 kN |
| Minimum Diameter Shaft Shoulder (Da) | — | 210 mm | — | — | — |
| Dynamic Axial Rating Ca90 | — | — | 0 N | — | — |
| Limiting Speeds(Grease Lub.) | — | — | — | — | 1300 min-1 |
| Operating Temperature Max. (Tmax) | — | 150 °C | — | — | — |
| Dynamic Axial Rating Ca1 | — | — | 0 N | — | — |
| Limiting Speeds(Oil Lub.) | — | — | — | — | 1800 min-1 |
| Limiting Speed (Limiting Spe) | — | 2,550 1/min | — | — | — |
| Static Radial Rating C0 | — | — | 1,500,000 N | — | — |
| Sd1 | — | — | — | — | - mm |
| Reference Speed (Nϑr) | — | 1,400 1/min | — | — | — |
| Extended Dynamic Rating Ce | — | — | 0 N | — | — |
| B1 | — | — | — | — | - mm |
| Maximum Recess Radius (Ra Max) | — | 4 mm | — | — | — |
| Static Axial Rating C0A | — | — | 0 N | — | — |
| B2 | — | — | — | — | - mm |
| Maximum Diameter Of Housing Shoulder (Da) | — | 380 mm | — | — | — |
| Da(Min.) | — | — | — | — | - mm |
| Minimum Chamfer Dimension (R1 Min) | — | 5 mm | — | — | — |
| Db(Min.) | — | — | — | — | - mm |
| Axial Displacement (S) | — | 6.3 mm | — | — | — |
| Db(Max.) | — | — | — | — | - mm |
| Minimum Rib Diameter Outer Ring (D1 Min) | — | 331.4 mm | — | — | — |
| Dc(Min.) | — | — | — | — | - mm |
| Maximum Diameter Of Shaft Shoulder (Da Max) | — | 242 mm | — | — | — |
| Dd(Min.) | — | — | — | — | - mm |
| Maximum Recess Radius (Ra1 Max) | — | 4 mm | — | — | — |
| Da(Max.) | — | — | — | — | 380 mm |
| Minimum Chamfer Dimension (Rmin) | — | 5 mm | — | — | — |
| Raceway Diameter Outer Ring (E) | — | 353 mm | — | — | — |
| Minimum Shaft Shoulder (Db Min) | — | 248 mm | — | — | — |
| Ra(Max.) | — | — | — | — | 4 mm |
| Fatigue Load Limit, Radial (Cur) | — | 110,000 N | — | — | — |
| Rb(Max.) | — | — | — | — | 4 mm |
| Mass(Refer.) | — | — | — | — | 49.9 kg |
| 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.